{"id":1996,"date":"2020-11-16T14:09:29","date_gmt":"2020-11-16T06:09:29","guid":{"rendered":"https:\/\/www.gbase8.cn\/?p=1996"},"modified":"2024-01-22T09:19:56","modified_gmt":"2024-01-22T01:19:56","slug":"%e9%9b%86%e7%be%a4%e5%8f%82%e6%95%b0%e6%95%b4%e7%90%86","status":"publish","type":"post","link":"https:\/\/www.gbase8.cn\/en\/1996","title":{"rendered":"\u5357\u5927\u901a\u7528GBase 8a\u96c6\u7fa4\u53c2\u6570\u5217\u8868"},"content":{"rendered":"\n

\u672c\u6587\u662f\u5168\u90e8\u80fd\u6574\u7406\u51fa\u7684\u53c2\u6570\u5217\u8868\uff0c\u5176\u4e2d\u5e38\u7528\u7684\u91cd\u8981\u53c2\u6570\uff0c\u5df2\u7ecf\u5355\u72ec\u6574\u7406\u5230 GBase 8a \u53c2\u6570\u6587\u7ae0\u6c47\u603b<\/a> \u91cc\uff0c\u5e76\u4e14\u63d0\u4f9b\u4e86\u4f7f\u7528\u6837\u4f8b\u3002<\/p>\n\n\n\n

<\/p>\n\n\n\n

\u53d8\u91cf\u540d\u5b57<\/td>\u8bf4\u660e<\/td><\/tr>
_gbase_add_months_mode<\/td>0=\u65e5\u671f\u5c3d\u91cf\u4e0e\u539f\u59cb\u65e5\u671f\u7684\u76f8\u540c\uff0c\u53ca\u65f6\u662f\u6700\u540e\u4e00\u5929
1=\u5982\u679c\u539f\u59cb\u65e5\u671f\u662f\u6700\u540e\u4e00\u5929\uff0c\u90a3\u5c06\u8fd4\u56de\u4e0b\u4e2a\u6708\u7684\u6700\u540e\u4e00\u5929\u3002(Oracle\u517c\u5bb9\u6a21\u5f0f)
<\/td><\/tr>
_gbase_adjust_complex_scan_weight<\/td>\u63a7\u5236\u662f\u5426\u5141\u8bb8\u8c03\u6574\u590d\u6742\u5355\u8868\u6761\u4ef6\u4ee3\u4ef7\u8bc4\u4f30\u503c\uff0c\u8c03\u6574\u4e3b\u8981\u5305\u62ec\u4e24\u65b9\u9762\uff1a
1\u3001IN\u8fd0\u7b97\u3001Like\u8fd0\u7b97\uff0cString\u7c7b\u578b\u5217\u3001float\u7c7b\u578b\u5217\u9002\u5f53\u589e\u52a0\u4ee3\u4ef7\u8bc4\u4f30\u503c
2\u3001\u9002\u5f53\u589e\u52a0\u591a\u5217\u8868\u8fbe\u5f0f\u4ee3\u4ef7\u8bc4\u4f30\u503c\uff0c\u4f8b\u5982t.a+t.b>0\u4ee3\u4ef7\u5927\u7ea6t.a>0
\u53c2\u6570\u53d6\u503c
0\uff1a\u7981\u6b62\u8c03\u6574
1\uff1a\u5141\u8bb8\u8c03\u6574<\/td><\/tr>
_gbase_autoextend_mode<\/td>\u9884\u79df\u7684\u6a21\u5f0f\uff1a
0\uff1a\u4f7f\u7528directIO\u7684\u65b9\u5f0f\u5360\u7528\u78c1\u76d8
1\uff1a\u4f7f\u7528fallocate\u65b9\u5f0f\u5360\u7528\u78c1\u76d8\uff08\u4ec5\u652f\u6301XFS,EXT3,EXT4\u6587\u4ef6\u7cfb\u7edf\uff09
\u4f7f\u7528directIO\u7684\u65b9\u5f0f\u5728XFS\u6587\u4ef6\u7cfb\u7edf\u4e0a\uff0c\u5bf9\u4e8egbloader\u3001DML\u5199\u5165\u64cd\u4f5c\u4f1a\u5bfc\u81f4\u53cc\u500d\u7684\u78c1\u76d8IO\uff0c\u5bfc\u81f4\u6027\u80fd\u964d\u4f4e\uff1b
\u800c\u4f7f\u7528fallocate\u51fd\u6570\u53ef\u4ee5\u907f\u514d\u78c1\u76d8IO\u5e26\u6765\u7684\u5199\u5165\u6027\u80fd\u7684\u5f71\u54cd\uff0c\u6ca1\u6709\u4f7f\u7528\u9884\u79df\u4e00\u6837\u7684\u6548\u679c\u3002
<\/td><\/tr>
_gbase_bsi_check_disable<\/td>\u662f\u5426\u5728saveDC\u65f6\u68c0\u67e5BSI\u7684store_min\u548clocal_min\u662f\u5426\u76f8\u7b49\u3002
0\uff1a\u68c0\u67e5\uff0c \u9ed8\u8ba4
1\uff1a\u4e0d\u68c0\u67e5<\/td><\/tr>
_gbase_cache_drop_delay_time<\/td>\u5982\u679c\u91ca\u653e\u6389\u7684DC\u4e0d\u8db3\u8bbe\u5b9a\u7684\u53c2\u6570\u503c\uff0c\u518d\u6b21\u6267\u884cdrop_cold\u6700\u5c0f\u65f6\u95f4\u95f4\u9694(\u5355\u4f4d\u79d2)\u3002 \u4e0d\u5efa\u8bae\u592a\u5c0f\uff0c\u907f\u514d\u9891\u7e41drop\u3002
\u5efa\u8bae10\uff0c \u5982\u679c\u6548\u679c\u4e0d\u4f73\uff0c\u53ef\u4ee5\u6539\u621015<\/td><\/tr>
_gbase_cache_drop_hot_data<\/td>\u70ed\u6570\u636e\u4e5f\u53c2\u4e0e\u56de\u6536\u3002<\/td><\/tr>
_gbase_cache_drop_unlock_cell_count<\/td>\u4e00\u6b21\u91ca\u653eunlock\u72b6\u6001\u7684DC\u6570\u91cf   \u9ed8\u8ba4\u503c\uff1a 1000<\/td><\/tr>
_gbase_caching_level<\/td>\u662f\u5426\u542f\u7528datacache\uff0c\u7f3a\u7701\u4e3a\u6253\u5f00<\/td><\/tr>
_gbase_check_password_format<\/td>\u662f\u5426\u6253\u5f00\u5bc6\u7801\u683c\u5f0f\u68c0\u67e5\u529f\u80fd\u3002\u5df2\u4f5c\u5e9f\u6216\u5f03\u7528\u3002<\/td><\/tr>
_gbase_connect_by_support_table_with_deleted_records<\/td>connect by \u8981\u6c42\u5fc5\u987b\u662f\u590d\u5236\u8868\uff0c\u800c\u4e14\u6570\u636e\u4e0d\u80fd\u6709\u5220\u9664\u7684\u3002\u8fd9\u4e2a\u53c2\u6570\u5f3a\u5236\u5141\u8bb8\u6709\u5220\u9664\u7684\u6570\u636e\u3002<\/td><\/tr>
_gbase_connect_retry_count<\/td>select into server\u5185\u90e8\u8c03\u7528gbase_inner_connect\u8fde\u63a5\u76ee\u7684server\u5931\u8d25\u65f6\u91cd\u8bd5\u7684\u6b21\u6570\uff0c\u9ed8\u8ba4\u4e3a3\uff08\u5373\u5982\u679c\u5931\u8d25\u4e86\uff0c\u8fd8\u4f1a\u518d\u91cd\u8bd53\u6b21\uff09<\/td><\/tr>
_gbase_cpu_task_number<\/td>\u5b9a\u5236\uff1a\u4e0d\u9700\u8981\u5728\u624b\u518c\u4e2d\u8fdb\u884c\u8bf4\u660e<\/td><\/tr>
_gbase_cpu_uplimit<\/td>\u5b9a\u5236\uff1a\u4e0d\u9700\u8981\u5728\u624b\u518c\u4e2d\u8fdb\u884c\u8bf4\u660e<\/td><\/tr>
_gbase_crash_dump_timeout<\/td>gbased\u5904\u7406segfault\u7684\u8d85\u65f6\u65f6\u95f4\u3002\u5982\u679c\u8d85\u8fc7\u4e86\uff0c\u5219\u5f3a\u5236\u63a8\u51fa\u3002\u76ee\u7684\u65f6\u4e3a\u4e86\u907f\u514d\u5904\u7406segfault\u4fe1\u53f7\u601d\u7d22\uff0c\u5bfc\u81f4gbased\u7684hang\u4f4f\u73b0\u8c61\u3002
\u9ed8\u8ba4 60s<\/td><\/tr>
_gbase_date_format_strict<\/td>\u65e5\u671f\u7684\u4e25\u683c\u6a21\u5f0f
1\uff1a\u6253\u5f00\uff0c\u4e0d\u5408\u6cd5\u7684\u4f1a\u53d8\u6210NULL
0: \u5173\u95ed\uff0c\u4e0d\u5408\u6cd5\u7684\u3010\u53ef\u80fd\u3011\u53d8\u62100000-00-00\u5f62\u5f0f\u3002<\/td><\/tr>
_gbase_date_func_type<\/td>\u5bf9\u65f6\u95f4\u505a\u51fd\u6570\u8ba1\u7b97\u540e\uff0c\u662f\u8fd4\u56dedatetime\u7c7b\u578b\u8fd8\u662fString\u7c7b\u578b\u3002
1\uff1adatetime \u7c7b\u578b \u9ed8\u8ba4\u3002 \u6ce8\u610f\u5305\u542b\u4e86\u65f6\u5206\u79d2
0\uff1aString \u7c7b\u578b\uff0c \u7eaf\u65e5\u671f\u5c06\u4e0d\u5305\u542b\u65f6\u5206\u79d2
adddate('2020-01-01',interval 1 year)
1:\u8fd4\u56de 2021-01-01 00:00:00
0:\u8fd4\u56de 2020-01-01<\/td><\/tr>
_gbase_date_function_mode<\/td>\u65e5\u671f\u76f4\u63a5\u52a0\u51cf\u7684\u529f\u80fd\u6a21\u5f0f<\/td><\/tr>
_gbase_dc_block_size_limit<\/td>\u7528\u4e8e\u8bbe\u7f6edatacell\u4e2d\u6570\u636e\u5206\u5757\u9650\u5ea6\u3002\u5355\u4f4d\u662fbyte. \u53ea\u9002\u7528\u4e8evarchar\u548ctext\u6570\u636e\u7c7b\u578b\u3002
Upper limit of datablock(subdatapack) in byte size---only for varchar or text data type.<\/td><\/tr>
_gbase_dc_sync_size<\/td>\u5355\u4f4d\uff1a\u5b57\u8282\uff0c\u5f53\u5217\u6570\u636e\u6587\u4ef6\u5728 Buffer \u4e2d\u672a\u5237\u51fa\u7684 DC \u5927\u5c0f\u8d85\u8fc7\u6307\u5b9a\u503c\u65f6\uff0c\u6267\u884c\u540c\u6b65\u5199 I\/O \u64cd\u4f5c\u3002\u6b64\u53c2\u6570\u9ed8\u8ba4\u503c\u4e3a 1TB\uff0c\u6b64\u65f6 I\/O \u64cd\u4f5c\u5c06\u7531\u7cfb\u7edf\u5468\u671f\u56de\u5199\u673a\u5236\u5b8c\u6210\u3002\u6b64\u53c2\u6570\u6700\u5c0f\u503c\u4e3a 0\uff0c\u8868\u793a\u6bcf\u6b21\u53d7\u63a7 SQL \u90fd\u8c03\u7528\u540c\u6b65 I\/O \u64cd\u4f5c\u3002
\u4e00\u822c\u914d\u5408\u8d44\u6e90\u7ba1\u7406\u7684\u78c1\u76d8\u5199\u5165\u63a7\u5236\u4f7f\u7528  max_disk_writeio\u3002<\/td><\/tr>
_gbase_dc_window_size<\/td>\u63a7\u5236\u4e00\u4e2a\u865a\u62df\u5217\u4e0a\u53ef\u4ee5\u540c\u65f6lock\u7684DC\u6570\u91cf\u3002
\u76f8\u5f53\u4e8e\u4e00\u4e2a\u865a\u62df\u5217\u4e0a\u7684DCcache\uff0c\u7528\u4e8e\u4f18\u5316\u70ed\u6570\u636e\u573a\u666f\u4e0b\u5e76\u53d1\u6216\u5e76\u884c\u65f6LockDC\u7684\u9501\u5f00\u9500\uff0c\u63d0\u5347\u6027\u80fd<\/td><\/tr>
_gbase_debug_internal<\/td>\u5185\u90e8\u8c03\u8bd5\u53c2\u6570\uff0c\u63a9\u7801\u5f62\u5f0f
0\uff1a\u5173\u95ed
1\uff1adebugI\/O\uff0cI\/O\u5c42\u51fa\u9519\u65f6\uff0c\u6709\u53ef\u80fd\u5c06\u9519\u8bef\u4fe1\u606f\u53ca\u8c03\u7528\u6808\u8f93\u51fa\u5230system.log<\/td><\/tr>
_gbase_delete_filter_compressed<\/td>\u63a7\u5236\u5728\u5b58\u50a8Filter\u65f6\uff0c\u662f\u5426\u4f7f\u7528\u538b\u7f29\u3002\u8fd9\u4e2a\u53c2\u6570\u9ed8\u8ba4\u4e3a0\uff0c\u5373\u4e0d\u4f7f\u7528\u538b\u7f29\uff0c\u8bbe\u4e3a1\u540e\u4f7f\u7528\u538b\u7f29<\/td><\/tr>
_gbase_disable_condition_reorder<\/td>\u662f\u5426\u7981\u7528\u5bf9\u67e5\u8be2\u6761\u4ef6\u6267\u884c\u987a\u5e8f\u7684\u81ea\u52a8\u8bc4\u4f30\u6392\u5e8f\uff0c\u5982\u679c\u914d\u7f6e\uff0c\u5219\u6570\u636e\u5e93\u4e0d\u4f1a\u6539\u53d8\u67e5\u8be2\u6761\u4ef6\u7684\u6267\u884c\u987a\u5e8f\uff0c\u76f4\u63a5\u6309SQL\u4e66\u5199\u987a\u5e8f\u6267\u884c\u3002\u6309\u63a9\u7801\u65b9\u5f0f\u914d\u5236\uff1a
0\uff08\u9ed8\u8ba4\uff09\uff1a\u4e0d\u751f\u6548\uff1b
1\uff1a\u7981\u7528\u5bf9scan\u6761\u4ef6\u7684\u6392\u5e8f\uff1b
2\uff1a\u7981\u7528\u5bf9join\u6761\u4ef6\u7684\u6392\u5e8f\uff1b
3\uff1a\u540c\u65f6\u7981\u7528\u5bf9scan\u548cjoin\u6761\u4ef6\u7684\u6392\u5e8f\uff1b
<\/td><\/tr>
_gbase_enable_hash_index_join<\/td>\u662f\u5426\u5229\u7528\u54c8\u5e0c\u7d22\u5f15\u8fdb\u884chashjoin\uff081\u4e3aON\uff0c0\u4e3aOFF\uff09
\u5373\u4f7f\u6b64\u9009\u9879\u4e3aON\uff0c\u4e5f\u4f1a\u6839\u636e\u6570\u636e\u7279\u6027\u51b3\u5b9a\u662f\u5426\u4f7f\u7528\u54c8\u5e0c\u7d22\u5f15\uff0c\u5f53\u9884\u4f30join\u6761\u4ef6\u4e2d\u65e0\u54c8\u5e0c\u7d22\u5f15\u7684\u5217\u7684\u53d6\u503c\u547d\u4e2d\u5e26\u54c8\u5e0c\u7d22\u5f15\u5217\u4e2d\u7684\u54c8\u5e0c\u6876\u4e2a\u6570\u8fc7\u591a\u65f6\uff0c\u4e0d\u4f7f\u7528hashindexjoin\u6a21\u5f0f<\/td><\/tr>
_gbase_enable_hashtree<\/td>\u7528\u4e8e\u8bbe\u7f6e\u662f\u5426\u5728HashJoin\u4e2d\u4f7f\u7528HashTree\u7b97\u6cd5
0(default):use normal hash,1:use hash tree
<\/td><\/tr>
_gbase_enable_memleak_check<\/td>\u5f00\u542f\u5185\u5b58\u6cc4\u6f0f\u68c0\u67e5.
1: \u6253\u5f00 \u9ed8\u8ba4
0\uff1a\u5173\u95ed<\/td><\/tr>
_gbase_enable_read_priority<\/td>\u7528\u4e8e\u8bbe\u7f6e\u8bfb\u64cd\u4f5c\u7684\u4f18\u5148\u7ea7\u9ad8\u4e8e\u5199\u64cd\u4f5c
1\uff1a\u8bfb\u4f18\u5148\uff0c\u9ed8\u8ba4
0: \u76f8\u540c<\/td><\/tr>
_gbase_enable_system_heap<\/td>\u5f00\u542fsystemheap\u7ba1\u7406\u81ea\u6709\u5806\u5185\u5b58<\/td><\/tr>
_gbase_express_table_limit<\/td>\u8868\u5bf9\u8c61\u7f13\u51b2\u4e2a\u6570\uff0c\u5305\u62ec\u5143\u6570\u636e\uff0c\u7ed3\u6784\u7b49,BSI\u7b49\u3002<\/td><\/tr>
_gbase_hybrid_store_group<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u8bbe\u7f6e\u662f\u5426\u4f7f\u7528\u884c\u5b58\u6570\u636e\u3002
\u5982\u679c\u8fd9\u4e2a\u53c2\u6570\u8bbe\u7f6e\u4e3a 0\uff0c\u4e0d\u4f7f\u7528\u884c\u5b58\u6570\u636e\u3002\u5982\u679c\u8fd9\u4e2a\u53c2\u6570\u8bbe\u7f6e\u4e3a 1\uff0c\u4f7f\u7528\u884c
\u5b58\u6570\u636e\uff08server \u81ea\u52a8\u5224\u65ad\u662f\u5426\u4f7f\u7528\uff09\u3002\u5982\u679c\u8fd9\u4e2a\u53c2\u6570\u8bbe\u7f6e\u4e3a 2\uff0c\u5f3a\u5236\u4f7f\u7528\u884c\u5b58
\u6570\u636e\uff08\u6709\u884c\u5b58\u6570\u636e\u65f6\u5219\u4e00\u5b9a\u4f7f\u7528\uff09
\u8be5\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u662f 1\u3002
<\/td><\/tr>
_gbase_in_subquery_result_threshold<\/td>\u9650\u5236in\u5b50\u67e5\u8be2\u53bb\u91cd\u540e\u6700\u5927\u5141\u8bb8\u7684\u8bb0\u5f55\u65700\uff1a\u4e0d\u9650\u5236\u5927\u4e8e\u6700\u5927\u503c\u62a5\u9519<\/td><\/tr>
_gbase_inmem_log_source<\/td>\u662f\u5426\u751f\u6210development log\uff0c\u8be5log\u7528\u4e8e\u5f00\u53d1\u8c03\u8bd5\u4f7f\u7528\uff0c\u4e0d\u5bf9\u5916\u5f00\u653e\uff0c\u7f3a\u7701\u5173\u95ed<\/td><\/tr>
_gbase_insert_malloc_size_limit<\/td>Insert select\u548cInsert values\u64cd\u4f5c\u5b57\u7b26\u4e32\u7c7b\u578b\u5185\u90e8\u4e2d\u95f4\u6570\u636e\u7ed3\u6784\u7533\u8bf7\u5185\u5b58\u65b9\u5f0f\u63a7\u5236\u53c2\u6570.
\u5982\u679c\u5b57\u7b26\u4e32\u7c7b\u578b\u5b9a\u4e49\u957f\u5ea6\u5c0f\u4e8e\u53c2\u6570\u8bbe\u7f6e\u5b57\u8282\u6570,\u5219\u6309\u7167\u5b9a\u4e49\u957f\u5ea6\u6574DC\u7533\u8bf7\u4e00\u6b21,\u5426\u5219\u6bcf\u6761\u7533\u8bf7\u4e00\u6b21\u5185\u5b58(\u6027\u80fd\u5dee)
<\/td><\/tr>
_gbase_io_size<\/td>\u8fd9\u4e2a\u53c2\u6570\u662f\u4e3a\u4e86\u4f18\u5316\u9884\u79df\u6a21\u5f0f\u4e0b\uff0c\u8986\u76d6\u5199\u5165\u7684\u6027\u80fd\u95ee\u9898\u3002\u542f\u7528\u9884\u79df\u6a21\u5f0f\u7684\u8868\u5728\u52a0\u8f7d\u3001DML\u64cd\u4f5c\u65f6\u4f1a\u6709\u8986\u76d6\u5199\u5165\uff0c\u6839\u636e\u64cd\u4f5c\u7cfb\u7edf\u7684\u6587\u4ef6\u7cfb\u7edf\u5757\u5927\u5c0f\u8c03\u6574\u8fd9\u4e2a\u53c2\u6570\u4f1a\u6709\u4e00\u5b9a\u5f97\u4f18\u5316IO\u4f5c\u7528\u3002
\u8bbe\u7f6e\u6210\u5927\u4e8e\u7b49\u4e8e\u7cfb\u7edf\u7684IO blocksize\uff0c\u5982\u679c\u7cfb\u7edf\u7684blocksize\u8d85\u51fa\u4e86\u6211\u4eec\u7684\u6700\u5927\u503c\uff0c\u8bbe\u7f6e\u6210\u6700\u5927\u503c\u5373\u53ef<\/td><\/tr>
_gbase_memory_algorithm<\/td>\u81ea\u6709\u5806\u5185\u5b58\u7ba1\u7406\u7b97\u6cd5<\/td><\/tr>
_gbase_memory_stack_number<\/td>\u8bb0\u5f55\u81ea\u6709\u5806\u5185\u5b58\u6cc4\u6f0f\u5806\u6808\u5c42\u6570
0\u5173\u95ed\uff08\u9ed8\u8ba4\uff09\uff0c\u6700\u5927\u503c128<\/td><\/tr>
_gbase_multi_pass_hash_join<\/td>\u63a7\u5236\u662f\u5426\u4f7f\u7528multi_pass_hash_join\uff1a
0\uff1a\u4e0d\u4f7f\u7528\uff1b
1\uff08\u9ed8\u8ba4\uff09\uff1a\u542f\u7528\uff0c\u7531\u6570\u636e\u5e93\u81ea\u52a8\u8bc4\u4f30\u662f\u5426\u4f7f\u7528\u8be5\u4f18\u5316\uff1b
<\/td><\/tr>
_gbase_net_alive_timeout<\/td>\u4e0d\u786e\u5b9a<\/td><\/tr>
_gbase_one_pass_hash_group<\/td>\u63a7\u5236\u662f\u5426\u4f7f\u7528one_pass_hash_group:
0:\u4e0d\u4f7f\u7528
1\uff1a\uff08\u9ed8\u8ba4\uff09\u542f\u7528\uff0c\u7531\u6570\u636e\u5e93\u81ea\u52a8\u8bc4\u4f30\u662f\u5426\u4f7f\u7528\u8be5\u4f18\u5316\uff1b<\/td><\/tr>
_gbase_one_pass_hash_join<\/td>\u63a7\u5236\u662f\u5426\u4f7f\u7528one_pass_hash_join:
0:\uff08\u9ed8\u8ba4\uff09\u4e0d\u4f7f\u7528
1\uff1a\u542f\u7528\uff0c\u7531\u6570\u636e\u5e93\u81ea\u52a8\u8bc4\u4f30\u662f\u5426\u4f7f\u7528\u8be5\u4f18\u5316\uff1b<\/td><\/tr>
_gbase_one_pass_union<\/td>\u63a7\u5236\u96c6\u5408\u7b97\u5b50\u5e76\u884c\u4f18\u5316\u7684\u5f00\u5173\u3002
0\uff1a\u5173\u95ed\uff1b1\uff1a\u5f00\u542f\uff1b2\uff1a\u5f3a\u5236\u5e76\u884c\uff08\u7528\u4e8e\u8c03\u8bd5\uff09\uff1b3\uff1a\u5f3a\u5236\u4e32\u884c\uff08\u7528\u4e8e\u8c03\u8bd5\uff09<\/td><\/tr>
_gbase_optimizer_having<\/td>\u63a7\u5236having\u4f18\u5316\u7684\u5f00\u5173\uff0c0\uff1a\u5173\u95ed1\uff1a\u5f00\u542f<\/td><\/tr>
_gbase_optimizer_in_subselect<\/td>in\u5b50\u67e5\u8be2\u4f18\u5316\u5f00\u5173\uff08\u53ef\u5c06in\u5b50\u67e5\u8be2\u4f18\u5316\u4e3aexists\u76f8\u5173\u5b50\u67e5\u8be2\uff09\u3002bool\u578b\u5f00\u5173\u91cf\uff0c\u7f3a\u7701\u4e3a1\uff08\u5373\u6253\u5f00\u4f18\u5316\uff09<\/td><\/tr>
_gbase_optimizer_multi_dim_projection<\/td>\u662f\u5426\u5f00\u542f\u201c\u591a\u7ef4\u5ea6\u6295\u5f71\u4f18\u5316\u201d
0:\u4e0d\u4f7f\u7528\uff1b
1\uff08\u9ed8\u8ba4\uff09\uff1a\u542f\u7528\uff1b<\/td><\/tr>
_gbase_optimizer_subselect_materialize<\/td>0:disable this optimize,1(default):use optimize,remove fields those not used by outer select_lex from derived table <\/td><\/tr>
_gbase_optimizer_substr_to_like<\/td>0(default):disable this optimize,
1:use optimize,transform substr to like<\/td><\/tr>
_gbase_parallel_aggr_mode<\/td>0:automatice valuation(default),
1:splits data by hash,
2:splits data by round-robin<\/td><\/tr>
_gbase_parallel_group_use_expression<\/td>\u5e76\u884cgroup\u8ba1\u7b97hash\u5206\u7ec4\u65f6\u662f\u5426\u5f3a\u5236\u4f7f\u7528\u8868\u8fbe\u5f0f\u5217
0\uff08\u9ed8\u8ba4\uff09\uff1a\u4e0d\u751f\u6548\uff0c\u81ea\u52a8\u8bc4\u4f30\u662f\u5426\u4f7f\u7528\u8868\u8fbe\u5f0f\u8ba1\u7b97hash\u5206\u7ec4\uff1b
1\uff1a\u5f3a\u5236\u4f7f\u7528\u8868\u8fbe\u5f0f\u8ba1\u7b97hash\u5206\u7ec4\uff1b<\/td><\/tr>
_gbase_parallel_insertselect_mode<\/td>\u9009\u62e9insertselect\u5e76\u884c\u65b9\u5f0f
0\u81ea\u52a8\u9009\u62e9
1\u5217\u95f4\u5e76\u884c
2\u5217\u5185\u5e76\u884c<\/td><\/tr>
_gbase_parallel_load_dc<\/td>bool\u53d8\u91cf\uff0c\u63a7\u5236\u662f\u5426\u542f\u7528\u5b58\u50a8\u5c42\u7684\u5e76\u884cIO\uff08LoadDC\uff09\uff0c0\u8868\u793a\u5173\u95ed\uff0c1\u8868\u793a\u542f\u7528<\/td><\/tr>
_gbase_parallel_mtable<\/td>0:disable materialized table parallel,
1:enable materialized table parallel(default)<\/td><\/tr>
_gbase_parallel_read_data<\/td>\u63a7\u5236\u5e76\u884c\u7ebf\u7a0b\u662f\u5426\u4ece\u4e0d\u540c\u7684\u4f4d\u7f6e\u5904\u7406\u6570\u636e\uff0c\u4ee5\u8fbe\u5230\u5e76\u884c\u8bfb\u6570\u636e\u7684\u6548\u679c
0\uff1a\u5173\u95ed\uff1b
1\uff1a\u5f00\u542f\uff1b<\/td><\/tr>
_gbase_parallel_sort_limit<\/td>The min rows of using parallel,default 100000<\/td><\/tr>
_gbase_query_path<\/td>\u5bf9\u4e8eExpress\u4e0d\u652f\u6301\u7684\u67e5\u8be2\u662f\u5426\u5141\u8bb8\u8d70\u6807\u51c6\u5f15\u64ce\u6267\u884c\uff0c\u7f3a\u7701\u503c\u4e3a0\uff0c\u8868\u793a\u4e0d\u5141\u8bb8\u3002
\u5f53\u67e5\u8be2\u901a\u9053\u6253\u5f00\u65f6\uff0c\u5bf9\u4e8eEXPRESS\u5f15\u64ce\u4e0d\u80fd\u6267\u884c\u7684\u67e5\u8be2\u4efb\u52a1\uff0c\u7cfb\u7edf\u5c06\u81ea\u52a8\u8f6c\u7ed9\u4e0a\u5c42\u7684\u5176\u5b83\u6570\u636e\u5e93\u5f15\u64ce\u6765\u7ee7\u7eed\u6267\u884c\uff0c\u8fd9\u4f7f\u5f97EXPRESS\u4e0d\u652f\u6301\u7684SQL\u8bed\u53e5\uff0c\u5728GBase8a\u4e2d\u4ecd\u7136\u53ef\u4ee5\u6267\u884c\uff0c\u4f46\u5728\u6267\u884c\u6548\u7387\u4e0a\uff0c\u53ef\u80fd\u4f1a\u5f15\u53d1\u6027\u80fd\u95ee\u9898<\/td><\/tr>
_gbase_release_memory_interval_cnt<\/td>\u8f6e\u8be2\u5185\u5b58\u4f7f\u7528\u72b6\u6001\u95f4\u9694<\/td><\/tr>
_gbase_rep_check_dc_ack<\/td>GNS\u5de5\u4f5c\u65f6\u662f\u5426\u8fdb\u884c\u9010\u4e2aDC\u7684ack\u68c0\u67e5<\/td><\/tr>
_gbase_result_threshold<\/td>\u9650\u5236\u7269\u5316\u7ed3\u679c\uff08\u4e2d\u95f4\u7ed3\u679c\u548c\u6700\u7ec8\u7ed3\u679c\uff09\u6700\u5927\u5141\u8bb8\u7684\u8bb0\u5f55\u65700\uff1a\u4e0d\u9650\u5236\u5927\u4e8e\u6700\u5927\u503c\u62a5\u9519<\/td><\/tr>
_gbase_segment_size<\/td>Maximumsizeofdatafiles[10M-2G].<\/td><\/tr>
_gbase_select_into_server_vio_queue<\/td>\u5728\u6267\u884cselectintoserver\u7684\u65f6\u5019\u662f\u5426\u4f7f\u7528\u5171\u4eabsocket<\/td><\/tr>
_gbase_session_memory_stat<\/td>\u5f00\u542f\u5168\u5c40\u5185\u5b58\u4f7f\u7528\u60c5\u51b5\u5b9e\u65f6\u7edf\u8ba1\u529f\u80fd<\/td><\/tr>
_gbase_sis_check_consistency<\/td>\u5728intoserver\u8fc7\u7a0b\u4e2d\u662f\u5426\u5bf9TableInfo\u53ca\u6570\u636e\u67d0\u4e9b\u6570\u503c\u8fdb\u884c\u4e00\u81f4\u6027\u68c0\u67e5<\/td><\/tr>
_gbase_skip_memcheck<\/td>Ifskipmemorycheckforexpressengine.Defaultno<\/td><\/tr>
_gbase_sql_trace_file_mode<\/td>Ifuseaglobalsharedexpresstracefile.1:shared,0:notshared<\/td><\/tr>
_gbase_storage_flush_interval<\/td>\u7edf\u8ba1\u7528\u6237\u5f53\u524d\u78c1\u76d8\u914d\u989d\u4f7f\u7528\u60c5\u51b5\u7684\u5237\u65b0\u9891\u7387\uff0c\u5355\u4f4d\u79d2\u3002<\/td><\/tr>
_gbase_transaction_disable<\/td>\u4f5c\u7528\u662f\u5728\u6253\u5f00\u65b0\u4e8b\u52a1\u7684\u76f8\u5173\u53c2\u6570\u65f6(\u914d\u7f6e\u6587\u4ef6),\u5728\u67d0\u4e9bsession\u4e2d\u4e0d\u4f7f\u7528\u65b0\u4e8b\u52a1\u7684\u76f8\u5173\u903b\u8f91.
\u9ed8\u8ba4\u503c:0,\u6309\u7167\u914d\u7f6e\u6587\u4ef6\u4e2d\u7684\u65b0\u4e8b\u52a1\u7684\u8bbe\u7f6e\u6267\u884c\u3002
1\u4e0d\u4f7f\u7528\u65b0\u4e8b\u52a1\u6a21\u5f0f\uff08\u5373\u4f7f\u5728\u914d\u7f6e\u6587\u4ef6\u4e2d\u914d\u7f6e\u4e86\u65b0\u4e8b\u52a1\u7684\u53c2\u6570\uff09<\/td><\/tr>
_gbase_update_oneformany<\/td>permitofupdateonetomulti.<\/td><\/tr>
_gbase_update_save_dc_buffer<\/td>gnode\u53c2\u6570\u3002\u591a\u7ebf\u7a0b\u6279\u91cfupdate\u4e2d\uff0cupdate\u7ebf\u7a0b\u5982\u679c\u6bd4save\u7ebf\u7a0b\u5feb\uff0c\u5219update\u7ebf\u7a0b\u9700\u8981\u7b49\u5f85\u3002\u8fd9\u5728\u78c1\u76d8IO\u8f83\u91cd\u7684\u573a\u666f\u4e0b\u4f1a\u51fa\u73b0\u3002\u8fd9\u4e2a\u53c2\u6570\u8868\u793a\u5df2\u7ecfupdate\u6210\u529f\u4f46\u8fd8\u6ca1\u6765\u5f97\u53casave\u7684DC\u6570\u91cf\u3002\u53d6\u540ddc_buffer\u662f\u56e0\u4e3a\u8fd9\u4e9b\u6570\u91cf\u7684dc\u662f\u4fdd\u5b58\u5728\u5185\u5b58\u4e2d\u7684\u3002\u8bbe\u7f6e\u8fd9\u4e2a\u6570\u91cf\u53ef\u4ee5\u63a7\u5236\u5185\u5b58\u7684\u4f7f\u7528\u91cf\u3002<\/td><\/tr>
_gbase_use_new_mtable<\/td>\u662f\u5426\u4f7f\u7528\u65b0\u7269\u5316\u8868\uff0c1\u4f7f\u7528\uff0c0\u4e0d\u4f7f\u7528<\/td><\/tr>
_gbase_use_trash_can<\/td>\u63a7\u5236\u4e34\u65f6\u6587\u4ef6\u7684\u5220\u9664\u65b9\u5f0f\uff1a
0\uff1a\u76f4\u63a5\u5220\u9664\uff1b
1\uff08\u9ed8\u8ba4\uff09\uff1a\u5c06\u4e34\u65f6\u6587\u4ef6\u79fb\u52a8\u81f3\u7279\u5b9a\u76ee\u5f55\uff0c\u540e\u53f0\u7ebf\u7a0b\u8d1f\u8d23\u5b9e\u9645\u5220\u9664\u52a8\u4f5c
<\/td><\/tr>
_gcluster_order_by_with_fixed_order<\/td>\u63a7\u5236row_number\u51fd\u6570\u4e2dorder by\u5bf9\u6295\u5f71\u5217\u5168\u5b57\u6bb5\u8fdb\u884c\u6392\u5e8f\uff0c\u4fdd\u8bc1\u8f93\u51fa\u7ed3\u679c\u7a33\u5b9a<\/td><\/tr>
_t_gcluster_distinct_multi_redist<\/td>distinct\u505a\u52a8\u6001\u91cd\u5206\u5e03\u65f6\uff0c\u4f7f\u7528\u591a\u4e2a\u5217\u8fdb\u884c\uff0c\u907f\u514d\u6570\u636e\u975e\u5e38\u503e\u659c\u7684\u573a\u666f\u3002
0 \u9ed8\u8ba4\u503c\uff0c\u91c7\u7528\u7b2c\u4e00\u4e2a\u5217\u8ba1\u7b97Hash\u503c
1 \u91c7\u7528\u6240\u6709\u5217\u8ba1\u7b97Hash\u503c<\/td><\/tr>
_t_gcluster_generate_interim_table_policy<\/td>\u8be5\u53c2\u6570\u7528\u4e8e\u8bbe\u7f6e\u96c6\u7fa4\u4e2d\u95f4\u8868\u521b\u5efa\u6a21\u5f0f\u3002
1\uff08default\uff09\uff0c\u4f7f\u7528createtable_tmp_xxxasselect...limit0
\u65b9\u5f0f\u521b\u5efa\u4e2d\u95f4\u8868\u3002
0\uff0ccreatetable_tmp_xxx(aint,bint)\u65b9\u5f0f\u521b\u5efa\u4e2d\u95f4\u8868\u3002<\/td><\/tr>
_t_gcluster_hash_redist_distinct_optimize<\/td>\u8fd9\u4e2a\u53c2\u6570\u4e3a\u67e5\u8be2\u8ba1\u5212\u6240\u4f7f\u7528\u7684\u53c2\u6570\uff0c\u73b0\u5df2\u5e9f\u5f03\u3002<\/td><\/tr>
_t_gcluster_hash_redist_olap_optimize<\/td>\u8fd9\u4e2a\u53c2\u6570\u4e3a\u67e5\u8be2\u8ba1\u5212\u6240\u4f7f\u7528\u7684\u53c2\u6570\uff0c\u73b0\u5df2\u5e9f\u5f03<\/td><\/tr>
_t_gcluster_hash_redist_primary_suffix<\/td>\u8be5\u53c2\u6570\u7528\u4e8e\u63a7\u5236\u5f53\u6709\u5206\u7247\u7684state\u88ab\u8bbe\u7f6e\u4e3a1\u65f6\uff0c\u53ea\u8981\u4e3b\u5206\u7247\u662f\u597d\u7684\uff0c\u662f\u5426\u4ecd\u7136\u8d70hash\u91cd\u5206\u5e03\u4f18\u5316\u3002
1\uff08default\uff09\uff0cinsertselect\u67e5\u8be2\u7684select\u90e8\u5206\uff0c\u53ea\u8981\u4e3b\u5206\u7247\u662f\u597d\u7684\uff0c\u5373\u4f7f\u526f\u672c\u5206\u7247state\u4e3a1\uff0c\u4ecd\u7136\u8d70hash\u91cd\u5206\u5e03\u4f18\u5316\u3002
0\uff0cinsertselect\u67e5\u8be2\u7684select\u90e8\u5206\uff0c\u6709\u5206\u7247state\u4e3a1\u65f6\uff0c\u4e0d\u8d70hash\u91cd\u5206\u5e03\u3002<\/td><\/tr>
_t_gcluster_hash_redistribute_groupby_on_multiple_expression<\/td>\u6307\u5b9a\u591a\u4e2a\u5217\u53c2\u4e0ehash\u8ba1\u7b97\uff0c\u907f\u514dGBase 8a\u505adistinct\u3001group\u3001join\u65f6\u901a\u8fc7\u6307\u5b9a\u591a\u5217\u52a8\u6001Hash\u91cd\u5206\u5e03\u907f\u514d\u4e25\u91cd\u6570\u636e\u503e\u659c\u5bfc\u81f4\u7684\u6027\u80fd\u95ee\u9898
GBase 8a\u505adistinct\u3001group\u548cjoin\u65f6\u907f\u514d\u4e25\u91cd\u6570\u636e\u503e\u659c\u5bfc\u81f4\u7684\u6027\u80fd\u95ee\u9898<\/a><\/td><\/tr>
_t_gcluster_inner_cond<\/td>\u8fd9\u4e2a\u53c2\u6570\u4e3a\u63a7\u5236\u96c6\u7fa4\u4f18\u5316\u5668\u7684\u53c2\u6570\uff0c\u4e3a\u4e86\u4fee\u590d\u67d0\u73b0\u573a\u7b1b\u5361\u5c14\u79ef\u5bf9\u96c6\u7fa4\u4e0d\u826f\u5f71\u54cd\u7684\u95ee\u9898\uff0c\u65b0\u589e\u4e86\u4e00\u5904\u4ee3\u7801\uff0c\u4e3a\u4e86\u9632\u6b62\u65b0\u589e\u4ee3\u7801\u5e26\u6765\u7684\u98ce\u9669\uff0c\u56e0\u6b64
\u52a0\u4e0a\u4e00\u4e2a\u63a7\u5236\u5f00\u5173\uff0c\u5982\u679c\u73b0\u573a\u53d1\u73b0\u95ee\u9898\uff0c\u53ef\u4ee5\u7528\u8be5\u53c2\u6570\u5173\u95ed\u65b0\u589e\u4ee3\u7801\u7684\u5f71\u54cd\uff08\u6062\u590d\u5230\u521d\u59cb\u72b6\u6001\uff09\u3002
\u53c2\u6570=0\u5173\u95ed\uff1b
\u53c2\u6570=1\u6253\u5f00\uff1b<\/td><\/tr>
_t_gcluster_limit_optimize<\/td>\u8fd9\u4e2a\u53c2\u6570\u4e3a\u67e5\u8be2\u8ba1\u5212\u6240\u4f7f\u7528\u7684\u53c2\u6570\uff0c\u73b0\u5df2\u5e9f\u5f03<\/td><\/tr>
_t_gcluster_nocopy_extra_step_for_dml<\/td>\u8be5\u53c2\u6570\u7528\u4e8e\u63a7\u5236insertselect\u7684\u6e90\u548c\u76ee\u7684\u5305\u542bnocopy\u8868\u65f6\uff0c\u662f\u5426\u4e3anocopy\u4ea7\u751f\u989d\u5916\u7684\u62c9\u8868\u52a8\u4f5c\u3002
1\uff08default\uff09\uff0c\u4e3anocopy\u8868\u4ea7\u751f\u989d\u5916\u62c9\u8868\u52a8\u4f5c\u3002
0\uff0c\u4e0d\u4ea7\u751f\u989d\u5916\u7684\u62c9\u8868\u52a8\u4f5c\u3002<\/td><\/tr>
_t_gcluster_optimize_chain_condition<\/td>\u8be5\u53c2\u6570\u7528\u4e8e\u63a7\u5236\u662f\u5426\u8fdb\u884c\u94fe\u5f0f\u6761\u4ef6\u4f18\u5316\u3002
Select * from t1,t2 where t1.id2=t2.id2 and t1.id2=10;
\u53ef\u4ee5\u4e3at2\u589e\u52a0\u4e00\u4e2a\u94fe\u5f0f\u6761\u4ef6t2.id2=10\u3002
\u5f00\u542f\u4f18\u5316\uff0csql\u5c06\u88ab\u4f18\u5316\u4e3aselect * from t1,t2 where t1.id2=t2.id2 and t1.id2=10 and t2.id2=10;
1\uff08default\uff09\uff0c\u5f00\u542f\u4f18\u5316
0\uff0c\u5173\u95ed\u4f18\u5316\u3002<\/td><\/tr>
_t_gcluster_optimize_hash_redistribute_ha<\/td>\u8be5\u53c2\u6570\u7528\u4e8e\u63a7\u5236\u5f53\u8bed\u53e5\u662f\u7eafSELECT\u8bed\u53e5\u65f6\uff0c\u80fd\u591f\u4f7f\u7528hash\u91cd\u5206\u5e03\u4f18\u5316\u65f6\uff0c\u5219\u4e00\u5b9a\u4f7f\u7528\uff0c\u800c\u4e0d\u8003\u8651\u8282\u70b9\u548c\u8868\u5206\u7247\u7684\u72b6\u6001\u3002
1\uff08default\uff09\uff0c\u7eafSELECT\u67e5\u8be2\uff0c\u4e0d\u8003\u8651\u8282\u70b9\u548c\u5206\u7247\u72b6\u6001\u3002
0\uff0c\u9700\u8981\u8003\u8651\u8282\u70b9\u548c\u5206\u7247\u72b6\u6001\u3002<\/td><\/tr>
_t_gcluster_optimize_insert_select_hash_redistribute<\/td>\u8be5\u53c2\u6570\u7528\u4e8e\u8bbe\u7f6einsertintohash\u5206\u5e03\u8868select\u975ehash\u5206\u5e03\u8868\u65f6\u4f7f\u7528hash\u91cd\u5206\u5e03\u8fd8\u662f\u4f7f\u7528\u62c9\u53d6\u590d\u5236\u8868\u65b9\u5f0f\u3002
1\uff08default\uff09\uff0c\u4e3a\u76ee\u6807\u8868\u51c6\u5907\u6570\u636e\u65f6\uff0c\u4f7f\u7528hash\u91cd\u5206\u5e03
0\uff0c\u4e3a\u76ee\u6807\u8868\u51c6\u5907\u6570\u636e\u65f6\uff0c\u4f7f\u7528\u590d\u5236\u8868\u3002<\/td><\/tr>
_t_gcluster_optimize_use_insert_prepare_step<\/td>\u8be5\u53c2\u6570\u7528\u4e8e\u8bbe\u7f6e\u662f\u5426\u5f00\u542f\u7269\u7406\u987a\u5e8f\u4e00\u81f4\u6027\uff0c\u907f\u514d\u540c\u4e00\u5206\u7247\u5728\u4e0d\u540c\u8282\u70b9\u4e0a\u51fa\u73b0\u6570\u636e\u7684\u7269\u7406\u987a\u5e8f\u4e0d\u4e00\u81f4\u95ee\u9898\u3002
1\uff08default\uff09\uff0c\u5f00\u542f\u7269\u7406\u987a\u5e8f\u4e00\u81f4\u6027\u3002
0\uff08build11.4\u4ec5\u53ef\u53d6\u503c1\uff09\uff0c\u4e0d\u5f00\u542f\u7269\u7406\u987a\u5e8f\u4e00\u81f4\u6027\u3002<\/td><\/tr>
_t_gcluster_scalar_subquery_exec_mode<\/td>\u8be5\u53c2\u6570\u7528\u4e8e\u8bbe\u7f6e\u96c6\u7fa4\u6807\u91cf\u5b50\u67e5\u8be2\u7684\u6267\u884c\u6a21\u5f0f\u3002\u3002
0\uff08default\uff09\uff0c\u4f7f\u7528\u6807\u91cf\u5b50\u67e5\u8be2\u4f18\u5316\uff0c\u6807\u91cf\u5b50\u67e5\u8be2\u4f1a\u88ab\u8ba1\u7b97\u4e3a\u4e00\u4e2a\u503c\uff0c\u7136\u540e\u4ee3\u5165\u539f\u67e5\u8be2\u4e2d\u8ba1\u7b97\u3002
1\uff0c\u5bf9\u4e8eselect\u5b50\u53e5\u4e2d\u7684\u6807\u91cf\u5b50\u67e5\u8be2\uff0c\u4e0d\u4f7f\u7528\u4f18\u5316\uff0c\u800c\u662f\u4ee5\u5b50\u67e5\u8be2\u7684\u5f62\u6001\u53c2\u4e0e\u67e5\u8be2\u3002<\/td><\/tr>
_t_gcluster_shrink_long_alias<\/td>\u8be5\u53c2\u6570\u7528\u4e8e\u8bbe\u7f6e\u662f\u5426\u5bf9\u96c6\u7fa4\u67e5\u8be2\u7684\u8d85\u957f\u522b\u540d\u8fdb\u884c\u7f29\u51cf\u3002
\u4f8b\u5982\u7528\u6237\u8bed\u53e5selectcasewhen.....endfromt1;
projection\u4e2d\u7684\u8868\u8fbe\u5f0f\u5982\u679c\u672a\u6307\u5b9a\u522b\u540d\uff0c\u5219\u4f1a\u4ee5\u8be5\u8868\u8fbe\u5f0f\u7684\u5b57\u9762\u4f5c\u4e3a\u522b\u540d\uff0c\u6b64\u65f6\u4f1a\u51fa\u73b0\u522b\u540d\u957f\u5ea6\u8d85\u8fc764\u7684\u60c5\u51b5\u3002\u5982\u679c\u4ee5\u6b64\u540d\u5b57\u4e3a\u5217\u540d\u521b\u5efa\u96c6\u7fa4\u4e2d\u95f4\u8868\uff0c
\u5219\u4f1a\u5bfc\u81f4\u521b\u5efa\u4e2d\u95f4\u8868\u5931\u8d25\uff0c\u56e0\u6b64\u9700\u8981\u8fdb\u884c\u522b\u540d\u7f29\u51cf\u3002
1\uff08default\uff09\uff0c\u7f29\u51cf\u522b\u540d\uff0c\u5bf9\u4e8e\u8d85\u957f\u522b\u540d\uff0c\u6784\u9020\u4e00\u4e2a\u7c7b\u4f3c_tmp_col_1\u8fd9\u6837\u7684\u4e0d\u51b2\u7a81\u7684\u522b\u540d\u3002
0\uff0c\u4e0d\u7f29\u51cf\u522b\u540d\u3002<\/td><\/tr>
_t_gcluster_support_cte<\/td>\u652f\u6301CTE\u8bed\u6cd5\u3002WithXXXas<\/td><\/tr>
_t_gcluster_swap_join_cond_optimize<\/td>\u8be5\u53c2\u6570\u7528\u4e8e\u8bbe\u7f6e\u662f\u5426\u4ea4\u6362join\u7684\u5de6\u53f3\u6761\u4ef6\u3002\u5f53join\u6761\u4ef6\u662fvarchar=int\u65f6\uff0c\u5f00\u542f\u672c\u5f00\u5173\uff0c\u5c06\u81ea\u52a8\u4ea4\u6362\u4e3aint=varchar\u3002
(\u672c\u53c2\u6570\u5df2\u7ecf\u5e9f\u5f03\uff0c\u5373\u5c06\u5220\u9664\uff0c\u8bf7\u4e0d\u8981\u4f7f\u7528\u3002)
1\uff08default\uff09\uff0c\u4ea4\u6362\u3002
0\uff0c\u4e0d\u4ea4\u6362\u3002<\/td><\/tr>
_t_gcluster_union_redist_optimize<\/td>\u662f\u5426\u5141\u8bb8\u4e0d\u540c\u6570\u636e\u7c7b\u578b(int\u548cdecimal\u7c7b\u578b)union\u65f6\uff0c\u81ea\u52a8\u8f6c\u5316\u6210redist\u91cd\u5206\u5e03\u3002
0 \u5173\u95ed\uff0c\u62c9\u590d\u5236\u8868
1 \u5f00\u542f\uff0c\u4f46\u4e0d\u652f\u6301\u5c06\u6570\u636e\u4eceint\u7684hash\u5217\u8f6c\u5316\u4e3adecimal\u7c7b\u578b\uff0c\u62c9\u590d\u5236\u8868
2 \u5f00\u542f\uff0c\u5e76\u4e14\u652f\u6301\u5c06\u6570\u636e\u7c7b\u578b\u4e3aint\u7684hash\u5217\u8f6c\u5316\u4e3adecimal\u7c7b\u578b\uff0c\u91cd\u5206\u5e03<\/td><\/tr>
_t_gcluster_use_new_join_traverse_optimize<\/td>\u8be5\u53c2\u6570\u7528\u4e8e\u8bbe\u7f6e\u96c6\u7fa4\u662f\u5426\u4f7f\u7528\u65b0\u7684JOIN\u6811\u904d\u5386\u7b97\u6cd5\u3002
\uff08\u672c\u53c2\u6570\u5373\u5c06\u5e9f\u5f03\uff0c\u4e0d\u8981\u4f7f\u7528\uff09
1\uff08default\uff09\uff0c\u4f7f\u7528\u65b0\u7684\u6539\u8fdb\u540e\u7684JOIN\u6811\u904d\u5386\u7b97\u6cd5\u3002
0\uff0c\u4f7f\u7528\u65e7\u7684JOIN\u6811\u904d\u5386\u7b97\u6cd5\u3002<\/td><\/tr>
_t_gcluster_use_new_res_sender<\/td>\u8be5\u53c2\u6570\u7528\u4e8e\u8bbe\u7f6e\u662f\u5426\u4f7f\u7528\u65b0\u7684\u7ed3\u679c\u96c6\u53d1\u9001\u5668\u3002
\u6765\u81eaGNode\u5c42\u7684\u6570\u636e\u683c\u5f0f\u9700\u8981\u7ecf\u8fc7gbase\u5c42->express\u5c42->gbase\u5c42\u8f6c\u6362\uff0c\u7136\u540e\u628a\u7ed3\u679c\u53d1\u9001\u7ed9\u5ba2\u6237\u7aef\u3002\u53ef\u4ee5\u770b\u5230\uff0c\u4e2d\u95f4express\u5c42\u8f6c\u6362\u662f\u4e0d\u5fc5\u987b\u7684\u3002
1\uff08default\uff09\uff0c\u4f7f\u7528\u65b0\u7684\u7ed3\u679c\u96c6\u53d1\u9001\u5668\uff0c\u7ed3\u679c\u96c6\u76f4\u63a5\u53d1\u9001\u7ed9\u5ba2\u6237\u7aef\u3002
0\uff0c\u6570\u636e\u683c\u5f0f\u8981\u8f6c\u5230express\u5c42\uff0c\u7136\u540e\u518d\u8f6c\u56degbase\u5c42\u3002<\/td><\/tr>
_t_gcluster_use_redist_ha_for_insert<\/td>\u8be5\u53c2\u6570\u7528\u4e8e\u8bbe\u7f6e\u5f53\u96c6\u7fa4\u4e0d\u5b8c\u6574\u65f6\uff0cINSERTSELECT\u4ecd\u7136\u652f\u6301hash\u91cd\u5206\u5e03\u64cd\u4f5c\u3002
1\uff08default\uff09\uff0c\u96c6\u7fa4\u4e0d\u5b8c\u6574\u65f6\uff0cinsertselect\u67e5\u8be2\u4e2d\uff0c\u4e3ainsert\u51c6\u5907\u6570\u636e\u65f6\uff0c\u4ecd\u7136\u53ef\u4ee5\u8d70hash\u91cd\u5206\u5e03\u3002
0\uff0c\u96c6\u7fa4\u4e0d\u5b8c\u6574\u65f6\uff0cinsertselect\u5c06\u4e0d\u8d70hash\u91cd\u5206\u5e03\u3002<\/td><\/tr>
active_resource_plan<\/td>\u5f53\u524d\u4f7f\u7528\u4e2d\u7684\u8d44\u6e90\u7ba1\u63a7\u8ba1\u5212\u540d\u5b57<\/td><\/tr>
async_thread_stack<\/td>\u96c6\u7fa4\u6267\u884cSQL\u8bed\u53e5\uff0c\u5411\u8282\u70b9\u4e0b\u53d1\u8bed\u53e5\uff0c\u8fdb\u884c\u534f\u7a0b\u5207\u6362\u65f6\uff0c\u7528\u6765\u6307\u5b9a\u534f\u7a0b\u4f7f\u7528\u7684\u6808\u7a7a\u95f4\u5927\u5c0f\u3002\u5355\u4f4d\u4e3aKB.\u5f53\u524d\u9ed8\u8ba4\u503c\u662f124KB, \u6700\u5c0f16KB.\u6700\u5927124KB.\u592a\u5c0f\u7684\u6808\u53ef\u80fd\u4f1a\u5f15\u8d77\u6808\u7a7a\u95f4\u6ea2\u51fa\u3002\u592a\u5927\u7684\u4f1a\u6d6a\u8d39\u5185\u5b58\u3002<\/td><\/tr>
audit_log<\/td>\u5ba1\u8ba1\u65e5\u5fd7\u5f00\u5173\u53c2\u6570\u3002<\/td><\/tr>
audit_log_file<\/td>\u5ba1\u8ba1\u65e5\u5fd7\u6587\u4ef6\u5f62\u5f0f\u4fdd\u5b58\u65f6\u7684\u8def\u5f84\u3002<\/td><\/tr>
auto_increment_increment<\/td>\u6253\u5f00\u81ea\u589e\u5217\u529f\u80fd\u3002\u8be5\u529f\u80fd\u5728V9\u7248\u672c\u624d\u6b63\u5f0f\u63d0\u4f9b\u3002\u5728V8\u91cc\u5b9e\u9645\u4e0d\u53ef\u7528\u3002<\/td><\/tr>
auto_increment_offset<\/td>\u81ea\u589e\u5217\u589e\u91cf\u504f\u79fb\u3002\u8be5\u529f\u80fd\u5728V9\u7248\u672c\u624d\u6b63\u5f0f\u63d0\u4f9b\u3002\u5728V8\u91cc\u5b9e\u9645\u4e0d\u53ef\u7528\u3002<\/td><\/tr>
autocommit<\/td>\u81ea\u52a8\u63d0\u4ea4\u3002<\/td><\/tr>
basedir<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u8bbe\u7f6e GBase 8a\u670d\u52a1\u7684\u6839\u76ee\u5f55\u3002GBase 8a\u670d\u52a1\uff08\u5373\u8282\u70b9\u7684gcware
\u670d\u52a1\uff09\u7684\u6b63\u786e\u8fd0\u884c\uff0c\u4f9d\u8d56\u4e8e\u8be5\u53c2\u6570\u7684\u6b63\u786e\u8bbe\u7f6e\u3002\u8fd9\u4e2a\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u4e3a$GBASE_BASE\/server\u3002
\u8be5\u53c2\u6570\u7684\u503c\u5728\u5b89\u88c5\u65f6\u5df2\u7ecf\u88ab\u6b63\u786e\u8bbe\u7f6e\uff0c\u7528\u6237\u4e0d\u9700\u8981\u5bf9\u5176\u8fdb\u884c\u4fee\u6539\uff0c\u5373\u53ef\u6b63
\u5e38\u542f\u52a8\u8282\u70b9\u7684 gcware \u670d\u52a1\u3002
<\/td><\/tr>
bind_address<\/td>\u7ed1\u5b9a\u7684IP\u5730\u5740\uff0c \u9ed8\u8ba4::\u662f\u5168\u90e8\u672c\u5730\u7684<\/td><\/tr>
caching_sha2_password<\/td>sha256\u7528\u6237\u5bc6\u7801\u52a0\u5bc6\u3002
0 \u5173\u95ed \u9ed8\u8ba4
1 \u5f00\u542f<\/td><\/tr>
character_set_client<\/td>\u5ba2\u6237\u7aef\u7684\u5b57\u7b26\u96c6<\/td><\/tr>
character_set_connection<\/td>\u8bbe\u7f6e\u8fde\u63a5\u6570\u636e\u5e93\u65f6\u7684\u5b57\u7b26\u96c6\uff0c\u5982\u679c\u7a0b\u5e8f\u4e2d\u6ca1\u6709\u6307\u660e\u8fde\u63a5\u6570\u636e\u5e93\u4f7f\u7528\u7684\u5b57\u7b26\u96c6\u7c7b\u578b\u5219\u6309\u7167\u8fd9\u4e2a\u5b57\u7b26\u96c6\u8bbe\u7f6e<\/td><\/tr>
character_set_database<\/td>\u6570\u636e\u5e93\u67d0\u4e2adatabase\u7684\u5b57\u7b26\u96c6<\/td><\/tr>
character_set_filesystem<\/td>\u6587\u4ef6\u7cfb\u7edf\u7684\u7f16\u7801\u683c\u5f0f\uff0c\u628a\u64cd\u4f5c\u7cfb\u7edf\u4e0a\u7684\u6587\u4ef6\u540d\u8f6c\u5316\u6210\u6b64\u5b57\u7b26\u96c6\uff0c\u5373\u628a character_set_client\u8f6c\u6362character_set_filesystem\uff0c \u9ed8\u8ba4binary\u662f\u4e0d\u505a\u4efb\u4f55\u8f6c\u6362\u7684<\/td><\/tr>
character_set_results<\/td>\u6570\u636e\u5e93\u7ed9\u5ba2\u6237\u7aef\u8fd4\u56de\u65f6\u4f7f\u7528\u7684\u7f16\u7801\u683c\u5f0f\uff0c\u5982\u679c\u6ca1\u6709\u6307\u660e\uff0c\u4f7f\u7528\u670d\u52a1\u5668\u9ed8\u8ba4\u7684\u7f16\u7801\u683c\u5f0f<\/td><\/tr>
character_set_server<\/td>\u670d\u52a1\u5668\u5b89\u88c5\u65f6\u6307\u5b9a\u7684\u9ed8\u8ba4\u7f16\u7801\u683c\u5f0f\uff0c\u8fd9\u4e2a\u53d8\u91cf\u5efa\u8bae\u7531\u7cfb\u7edf\u81ea\u5df1\u7ba1\u7406\uff0c\u4e0d\u8981\u4eba\u4e3a\u5b9a\u4e49\u3002<\/td><\/tr>
character_set_sort<\/td>\u6570\u636e\u5e93\u6392\u5e8f\u7684\u5b57\u7b26\u96c6<\/td><\/tr>
character_set_system<\/td>\u6570\u636e\u5e93\u7cfb\u7edf\u4f7f\u7528\u7684\u7f16\u7801\u683c\u5f0f\uff0c\u8fd9\u4e2a\u503c\u4e00\u76f4\u662futf8\uff0c\u4e0d\u9700\u8981\u8bbe\u7f6e\uff0c\u5b83\u662f\u4e3a\u5b58\u50a8\u7cfb\u7edf\u5143\u6570\u636e\u7684\u7f16\u7801\u683c\u5f0f<\/td><\/tr>
character_sets_dir<\/td>\u5b57\u7b26\u96c6\u5b89\u88c5\u7684\u76ee\u5f55<\/td><\/tr>
collation_connection<\/td>\u8fde\u63a5\u7684\u6392\u5e8f\u89c4\u5219<\/td><\/tr>
collation_database<\/td>\u6570\u636e\u5e93\u7684\u6392\u5e8f\u89c4\u5219<\/td><\/tr>
collation_server<\/td>\u670d\u52a1\u5668\u7684\u6392\u5e8f\u89c4\u5219<\/td><\/tr>
connect_timeout<\/td>gclusterd\u670d\u52a1\u5728\u54cd\u5e94\u9519\u8bef\u63e1\u624b\u4e4b\u524d\u7b49\u5f85\u8fde\u63a5\u6570\u636e\u5305\u7684\u79d2\u6570\u3002<\/td><\/tr>
datadir<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u8bbe\u7f6e GBase 8a \u7684\u6570\u636e\u76ee\u5f55\u4f4d\u7f6e\u3002
\u8fd9\u4e2a\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u4e3a$GBASE_BASE\/userdata\/$GBASE_SID\u3002
\u8be5\u53c2\u6570\u7684\u503c\u5728\u5b89\u88c5\u65f6\u5df2\u7ecf\u88ab\u6b63\u786e\u8bbe\u7f6e\uff0c\u7528\u6237\u4e0d\u9700\u8981\u5bf9\u5176\u8fdb\u884c\u4fee\u6539\uff0c\u5373\u53ef\u6b63
\u5e38\u542f\u52a8\u8282\u70b9\u7684 gcware \u670d\u52a1\u3002
<\/td><\/tr>
date_format<\/td>\u9ed8\u8ba4\u7684\u65e5\u671f\u683c\u5f0f<\/td><\/tr>
datetime_format<\/td>\u9ed8\u8ba4\u7684\u65e5\u671f\u65f6\u95f4\u683c\u5f0f<\/td><\/tr>
default_week_format<\/td>\u9ed8\u8ba4\u7684\u661f\u671f\u6a21\u5f0f<\/td><\/tr>
event_scheduler<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u6253\u5f00\/\u5173\u95ed\u4e8b\u4ef6\u8c03\u5ea6\u7a0b\u5e8f\u3002
\u5f53\u53c2\u6570\u4e3a 0 \u65f6\uff0c\u5173\u95ed\u4e8b\u4ef6\u8c03\u5ea6\u7a0b\u5e8f\uff1b\u5f53\u53c2\u6570\u4e3a 1 \u65f6\uff0c\u6253\u5f00\u4e8b\u4ef6\u8c03\u5ea6\u7a0b\u5ea6\u3002
\u5728 GBase 8a \u4e2d\uff0c\u9700\u8981\u5bf9\u7cfb\u7edf\u8868\u4e2d\u7684\u6570\u636e\u8fdb\u884c\u5b9a\u671f\u6574\u7406\uff0c\u4e14\u6574\u7406\u529f\u80fd\u7531\u4e8b\u4ef6\u8c03\u5ea6\u7a0b\u5e8f\u542f\u52a8\uff0c\u56e0\u6b64\u8be5\u53c2\u6570\u7684\u503c\u5fc5\u987b\u8bbe\u7f6e\u4e3a 1\uff0c\u4ee5\u6253\u5f00\u4e8b\u4ef6\u8c03\u5ea6\u7a0b\u5e8f\u3002
\u5982\u679c\u7528\u6237\u5173\u95ed\u4e8b\u4ef6\u8c03\u5ea6\u7a0b\u5e8f\uff0c\u53ef\u80fd\u5bfc\u81f4\u6570\u636e\u5e93\u7cfb\u7edf\u7531\u4e8e\u672a\u80fd\u53ca\u65f6\u5bf9\u7cfb\u7edf\u8868
\u8fdb\u884c\u6574\u7406\uff0c\u9020\u6210\u6570\u636e\u5e93\u51fa\u73b0\u6027\u80fd\u95ee\u9898\u3002
<\/td><\/tr>
gbase_buffer_distgrby<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u8bbe\u7f6e\u6570\u636e\u5e93\u505a DISTINCT GROUP \u65f6\u4f7f\u7528\u7684 BUFFER \u5927\u5c0f\u3002
\u5982\u679c\u7528\u6237\u7684SQL\u64cd\u4f5c\u7ecf\u5e38\u51fa\u73b0DISTINCT\u64cd\u4f5c\uff0c\u5219\u53ef\u9002\u5f53\u5c06\u8be5\u53c2\u6570\u8c03\u5927\u4e00\u4e9b\u3002
\u901a\u5e38\u8be5\u5185\u5b58\u4ece LARGE BUFFER \u4e2d\u7533\u8bf7\uff0c\u56e0\u6b64\u8be5\u503c\u5e94\u5c0f\u4e8e gbase_heap_large
\u7684\u5927\u5c0f\u3002
\u7cfb\u7edf\u4f1a\u6839\u636e gbase_heap_data \u7684\u5927\u5c0f\uff0c\u81ea\u52a8\u8ba1\u7b97 gbase_buffer_distgrby
\u7684\u6700\u5c0f\u503c\u3002\u5982\u679c\u7528\u6237\u7684\u8bbe\u7f6e\u503c\u5c0f\u4e8e\u7a0b\u5e8f\u8ba1\u7b97\u7684\u6700\u5c0f\u503c\uff0c\u5219\u4f1a\u5ffd\u7565\u8be5\u53c2\u6570\u7684\u8bbe\u7f6e\u503c\u3002
\u8be5\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u662f\u7531\u7cfb\u7edf\u81ea\u52a8\u8bc4\u4f30\u8ba1\u7b97\u51fa\u6765\u7684\uff0c\u4e0d\u662f\u56fa\u5b9a\u7684\u503c\u3002<\/td><\/tr>
gbase_buffer_hgrby<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u8bbe\u7f6e\u6570\u636e\u5e93\u505a GROUP \u65f6\u4f7f\u7528\u7684 BUFFER \u5927\u5c0f\u3002
\u5982\u679c\u7528\u6237\u7684 SQL \u64cd\u4f5c\u7ecf\u5e38\u51fa\u73b0 GROUP BY \u64cd\u4f5c\uff0c\u5219\u53ef\u4ee5\u9002\u5f53\u5c06\u8be5\u53c2\u6570\u8c03\u5927\u4e00
\u4e9b\u3002
\u901a\u5e38\u8be5\u5185\u5b58\u4ece LARGE BUFFER \u4e2d\u7533\u8bf7\uff0c\u56e0\u6b64\u8be5\u503c\u5e94\u5c0f\u4e8e gbase_heap_large
\u7684\u5927\u5c0f\u3002
\u7cfb\u7edf\u4f1a\u6839\u636e gbase_heap_data \u7684\u5927\u5c0f\uff0c\u81ea\u52a8\u8ba1\u7b97 gbase_buffer_hgrby \u7684\u6700
\u5c0f\u503c\u3002\u5982\u679c\u7528\u6237\u7684\u8bbe\u7f6e\u503c\u5c0f\u4e8e\u7a0b\u5e8f\u8ba1\u7b97\u7684\u6700\u5c0f\u503c\uff0c\u5219\u4f1a\u5ffd\u7565\u8be5\u53c2\u6570\u7684\u8bbe\u7f6e\u503c\u3002
\u8be5\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u662f\u7531\u7cfb\u7edf\u81ea\u52a8\u8bc4\u4f30\u8ba1\u7b97\u51fa\u6765\u7684\uff0c\u4e0d\u662f\u56fa\u5b9a\u7684\u503c<\/td><\/tr>
gbase_buffer_hj<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u8bbe\u7f6e\u6570\u636e\u5e93\u505a HASH JOIN \u65f6\u4f7f\u7528\u7684 BUFFER \u5927\u5c0f\u3002
\u5982\u679c\u7528\u6237\u7684 SQL \u64cd\u4f5c\u7ecf\u5e38\u51fa\u73b0 HASH JOIN \u64cd\u4f5c\uff0c\u5219\u53ef\u4ee5\u9002\u5f53\u5c06\u8be5\u53c2\u6570\u8c03\u5927
\u4e00\u4e9b\u3002
\u901a\u5e38\u8be5\u5185\u5b58\u4ece LARGE BUFFER \u4e2d\u7533\u8bf7\uff0c\u56e0\u6b64\u8be5\u503c\u5e94\u5c0f\u4e8e gbase_heap_large
\u7684\u5927\u5c0f\u3002
\u7cfb\u7edf\u4f1a\u6839\u636e gbase_heap_data \u7684\u5927\u5c0f\uff0c\u81ea\u52a8\u8ba1\u7b97 gbase_buffer_hj \u7684\u6700\u5c0f
\u503c\u3002\u5982\u679c\u7528\u6237\u7684\u8bbe\u7f6e\u503c\u5c0f\u4e8e\u7a0b\u5e8f\u8ba1\u7b97\u7684\u6700\u5c0f\u503c\uff0c\u5219\u4f1a\u5ffd\u7565\u8be5\u53c2\u6570\u7684\u8bbe\u7f6e\u503c\u3002
\u8be5\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u662f\u7531\u7cfb\u7edf\u81ea\u52a8\u8bc4\u4f30\u8ba1\u7b97\u51fa\u6765\u7684\uff0c\u4e0d\u662f\u56fa\u5b9a\u7684\u503c\u3002<\/td><\/tr>
gbase_buffer_insert<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u8bbe\u7f6e\u6279\u91cf INSERT \u6570\u636e\u65f6\uff0c\u4e2d\u95f4 BUFFER \u7684\u5927\u5c0f\u3002
\u9002\u5f53\u51cf\u5c11 COMMIT \u7684\u6b21\u6570\uff0c\u53ef\u4ee5\u52a0\u5feb INSERT \u7684\u901f\u5ea6\uff0c\u4f46\u51cf\u5c11 COMMIT \u64cd\u4f5c\uff0c
\u5219\u9700\u8981\u66f4\u5927\u7684 gbase_buffer_insert\u3002\u8be5\u53c2\u6570\u7684\u8bbe\u7f6e\u503c\u4e0e\u5728 INSERT \u64cd\u4f5c\u65f6\uff0c\u4e00
\u6b21 COMMIT \u7684\u8bb0\u5f55\u6570\u91cf\u53ca INSERT \u7684\u6570\u636e\u5185\u5bb9\u76f8\u5173\u3002
\u8be5\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u662f 256M\u3002
<\/td><\/tr>
gbase_buffer_rowset<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u914d\u7f6e\u7f13\u5b58 join \u4e2d\u95f4\u7ed3\u679c\u6240\u4f7f\u7528\u7684 BUFFRER \u5927\u5c0f\u3002
\u7cfb\u7edf\u4f1a\u6839\u636e gbase_heap_data \u7684\u5927\u5c0f\uff0c\u81ea\u52a8\u8ba1\u7b97 gbase_buffer_rowset \u7684
\u6700\u5c0f\u503c\u3002\u5982\u679c\u7528\u6237\u7684\u8bbe\u7f6e\u503c\u5c0f\u4e8e\u7a0b\u5e8f\u8ba1\u7b97\u7684\u6700\u5c0f\u503c\uff0c\u5219\u4f1a\u5ffd\u7565\u8be5\u53c2\u6570\u7684\u8bbe\u7f6e\u503c\u3002
\u901a\u5e38\u8be5\u5185\u5b58\u4ece LARGE BUFFER \u4e2d\u7533\u8bf7\uff0c\u56e0\u6b64\u8be5\u503c\u5e94\u5c0f\u4e8e gbase_heap_large
\u7684\u5927\u5c0f\u3002
\u8be5\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u662f\u7531\u7cfb\u7edf\u81ea\u52a8\u8bc4\u4f30\u8ba1\u7b97\u51fa\u6765\u7684\uff0c\u4e0d\u662f\u56fa\u5b9a\u7684\u503c\u3002<\/td><\/tr>
gbase_buffer_sort<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u8bbe\u7f6e\u6570\u636e\u5e93\u505a SORT \u65f6\u4f7f\u7528\u7684 BUFFER \u5927\u5c0f\u3002
\u5982\u679c\u7528\u6237\u7684 SQL \u64cd\u4f5c\u7ecf\u5e38\u51fa\u73b0 SORT \u64cd\u4f5c\uff0c\u5219\u53ef\u4ee5\u9002\u5f53\u5c06\u8be5\u53c2\u6570\u8c03\u5927\u4e00\u4e9b\u3002
\u901a\u5e38\u8be5\u5185\u5b58\u4ece LARGE BUFFER \u4e2d\u7533\u8bf7\uff0c\u56e0\u6b64\u8be5\u503c\u5e94\u5c0f\u4e8e gbase_heap_large
\u7684\u5927\u5c0f\u3002
\u7cfb\u7edf\u4f1a\u6839\u636e gbase_heap_data \u7684\u5927\u5c0f\uff0c\u81ea\u52a8\u8ba1\u7b97 gbase_buffer_sort \u7684\u6700
\u5c0f\u503c\u3002\u5982\u7528\u6237\u7684\u8bbe\u7f6e\u503c\u5c0f\u4e8e\u7a0b\u5e8f\u8ba1\u7b97\u7684\u6700\u5c0f\u503c\uff0c\u5219\u4f1a\u5ffd\u7565\u8be5\u53c2\u6570\u7684\u8bbe\u7f6e\u503c\u3002
\u8be5\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u662f\u7531\u7cfb\u7edf\u81ea\u52a8\u8bc4\u4f30\u8ba1\u7b97\u51fa\u6765\u7684\uff0c\u4e0d\u662f\u56fa\u5b9a\u7684\u503c\u3002<\/td><\/tr>
gbase_cache_data_dir<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u8bbe\u7f6e GBase 8a \u8fd0\u884c\u4e2d\uff0c\u6570\u636e\u5e93\u4e34\u65f6\u76ee\u5f55\u8def\u5f84\u3002\u8be5\u76ee\u5f55\u81f3\u5c11\u9700
\u8981 20G \u7684\u7a7a\u95f2\u7a7a\u95f4\uff08\u4f9d\u8d56\u4e8e\u6570\u636e\u5e93\u7684\u5927\u5c0f\uff09\u3002
\u8be5\u76ee\u5f55\u5bf9 GBase 8a \u7684\u8fd0\u884c\u6027\u80fd\u5f71\u54cd\u8f83\u5927\uff0c\u901a\u5e38\u8981\u6c42\u8be5\u76ee\u5f55\u88ab\u8bbe\u7f6e\u5728 IO \u6027
\u80fd\u975e\u5e38\u9ad8\u7684\u78c1\u76d8\u5206\u533a\u4e2d\u3002
\u5728 GBase 8a \u4e2d\uff0c\u8be5\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u4e3a
$GBASE_BASE\/tmpdata\/cache_$GBASE_SID\uff0c\u7528\u6237\u53ef\u4ee5\u6839\u636e\u5b9e\u9645\u7684\u786c\u4ef6\u60c5\u51b5\uff0c\u4fee
\u6539\u8be5\u53c2\u6570\u3002
<\/td><\/tr>
gbase_capture_sql_flag<\/td>\u8bb0\u5f55\u6240\u6709\u6267\u884c\u8fc7\u7684select\u8bed\u53e5\u7684\u529f\u80fd0\u662f\u5173\u95ed\uff0c1\u662f\u5f00\u542f<\/td><\/tr>
gbase_compression_num_method<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u63a7\u5236\u6570\u5b57\u578b\uff08\u4f8b\u5982\uff1aTINYINT\uff0cINT\uff0cBIGINT\uff0cDOUBLE\uff0cDECIMAL...)
\u6570\u636e\u7684\u538b\u7f29\u65b9\u5f0f\u3002
\u53ef\u9009\u7684\u538b\u7f29\u65b9\u5f0f\u6709\uff1a
0 - \u8f7b\u91cf\u7ea7\u538b\u7f29
1 - PPM \u538b\u7f29\uff08\u538b\u7f29\u901f\u5ea6\u5feb\uff0c\u89e3\u538b\u901f\u5ea6\u6162\uff09
5 - RAPIDZ \u538b\u7f29\uff08\u76f8\u5bf9\u4e8e 31 \u7b97\u6cd5\u800c\u8a00\uff0c\u53ef\u4ee5\u63d0\u4f9b\u66f4\u597d\u7684\u6570\u636e\u541e\u5410\u80fd\u529b\uff08IO+
\u89e3\u538b\uff09\uff0c\u9002\u7528\u4e8e\u5bf9\u6027\u80fd\u8981\u6c42\u8f83\u9ad8\u7684\u7528\u6237\u573a\u5408\u3002\uff09
\u8be5\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u662f 0\u3002
<\/td><\/tr>
gbase_compression_str_method<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u63a7\u5236\u5b57\u7b26\u4e32\u7c7b\u578b\uff08\u5982\uff1aVARCHAR\uff0cCHAR...\uff09\u7684\u538b\u7f29\u65b9\u5f0f\u3002\u53ef
\u9009\u7684\u538b\u7f29\u65b9\u5f0f\u6709\uff1a
0 - \u8f7b\u91cf\u7ea7\u538b\u7f29
3 - PPM \u538b\u7f29\uff08\u538b\u7f29\u901f\u5ea6\u5feb\uff0c\u89e3\u538b\u901f\u5ea6\u6162\uff09
5 - RAPIDZ \u538b\u7f29\uff08\u76f8\u5bf9\u4e8e 31 \u7b97\u6cd5\u800c\u8a00\uff0c\u53ef\u4ee5\u63d0\u4f9b\u66f4\u597d\u7684\u6570\u636e\u541e\u5410\u80fd\u529b\uff08IO+
\u89e3\u538b\uff09\uff0c\u9002\u7528\u4e8e\u5bf9\u6027\u80fd\u8981\u6c42\u8f83\u9ad8\u7684\u7528\u6237\u573a\u5408\u3002\uff09
\u8be5\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u662f 0,\u4f46\u914d\u7f6e\u6587\u4ef6\u914d\u7f6e\u7684\u9ed8\u8ba4\u662f5\u3002<\/td><\/tr>
gbase_dblink_gateway_ip<\/td>\u4f7f\u7528 dblink \u529f\u80fd\u65f6\uff0c\u9700\u8981\u8fde\u63a5\u7684 GBase \u900f\u660e\u7f51\u5173\u7684 IP\u3002\u5728 GBase 8a \u7684\u914d
\u7f6e\u6587\u4ef6\u4e2d\uff0c\u624b\u52a8\u52a0\u5165\u6b64\u53c2\u6570\uff0c\u5e76\u4e14\u8f93\u5165 IP \u5730\u5740\u3002\u914d\u7f6e\u5b8c\u6bd5\u540e\uff0c\u4fdd\u5b58\u9000\u51fa\u914d\u7f6e\u6587
\u4ef6\uff0c\u91cd\u65b0\u542f\u52a8\u8282\u70b9\u7684 gcware \u670d\u52a1\u3002
<\/td><\/tr>
gbase_dblink_gateway_port<\/td>\u4f7f\u7528 dblink \u529f\u80fd\u65f6\uff0c\u9700\u8981\u8fde\u63a5\u7684 GBase \u900f\u660e\u7f51\u5173\u7684 Port\u3002\u5728 GBase 8a \u7684
\u914d\u7f6e\u6587\u4ef6\u4e2d\uff0c\u624b\u52a8\u52a0\u5165\u6b64\u53c2\u6570\uff0c\u5e76\u4e14\u8f93\u5165\u7aef\u53e3\u53f7\u3002\u914d\u7f6e\u5b8c\u6bd5\u540e\uff0c\u4fdd\u5b58\u9000\u51fa\u914d\u7f6e
\u6587\u4ef6\uff0c\u91cd\u65b0\u542f\u52a8\u8282\u70b9\u7684 gcware \u670d\u52a1\u3002
<\/td><\/tr>
gbase_dblink_server_ip<\/td>\u4f7f\u7528 dblink \u529f\u80fd\u65f6\uff0cGBase Server \u672c\u8eab\u7684 IP\u3002\u5728 GBase 8a \u7684\u914d\u7f6e\u6587\u4ef6\u4e2d\uff0c
\u624b\u52a8\u52a0\u5165\u6b64\u53c2\u6570\uff0c\u5e76\u4e14\u8f93\u5165 IP \u5730\u5740\u3002\u914d\u7f6e\u5b8c\u6bd5\u540e\uff0c\u4fdd\u5b58\u9000\u51fa\u914d\u7f6e\u6587\u4ef6\uff0c\u91cd\u65b0\u542f
\u52a8\u8282\u70b9\u7684 gcware \u670d\u52a1\u3002
<\/td><\/tr>
gbase_dblink_standby_gateway_ip<\/td>\u5907\u7528 dblink \u7f51\u5173\u670d\u52a1\u6240\u5728\u4e3b\u673a\u7684 ip \u5730\u5740\u3002
<\/td><\/tr>
gbase_dblink_standby_gateway_port<\/td>\u5907\u7528 dblink \u7f51\u5173\u670d\u52a1\u76d1\u542c\u7684\u7aef\u53e3\u3002
\u53ef\u90e8\u7f72\u4e24\u5957\u76f8\u540c\u914d\u7f6e\u7684 dblink \u7f51\u5173\u670d\u52a1\uff0c\u4e00\u4e3b\u4e00\u5907\uff0c\u540c\u65f6\u90fd\u542f\u52a8\u5728\u7ebf\uff0c\u5f53
gcluster \u8fde\u63a5\u4e3b\u7f51\u5173\u5931\u8d25\u65f6\u5c06\u5c1d\u8bd5\u8fde\u63a5\u5907\u7528\u7f51\u5173<\/td><\/tr>
gbase_decimal_calculation<\/td>1 \u6253\u5f00decimal\u8ba1\u7b97\u7cbe\u5ea6\u5f3a\u5236\u4e3a20\u4f4d\u30020 \u5173\u95ed\uff0c\u5219\u6839\u636e\u5b57\u6bb5\u5b9a\u4e49\u989d\u5916\u8865\u4e0a4\u4f4d\u3002<\/td><\/tr>
gbase_disable_encrypt<\/td>\u52a0\u5bc6\u5f00\u5173\u3002\u9ed8\u8ba4\u4e3a0. \u4e3a1\u65f6\uff0c\u5373\u4f7f\u521b\u5efa\u4e86\u52a0\u5bc6\u8bed\u6cd5\uff0c\u4ecd\u4e0d\u52a0\u5bc6\u3002<\/td><\/tr>
gbase_enable_hdfs_sso<\/td>\u8be5\u53c2\u6570\u4e3a\u5e03\u5c14\u578b\u53d8\u91cf\uff0c\u7528\u4e8e\u6307\u5b9a\u662f\u5426\u542f\u7528 HDFS \u5355\u70b9\u767b\u5f55\u529f\u80fd\u3002\u9ed8\u8ba4\u503c\u4e3a 1
\u6216 ON\uff0c\u8868\u793a\u542f\u7528 HDFS \u5355\u70b9\u767b\u5f55\u3002
\u9ed8\u8ba4\u503c \u6700\u5c0f\u503c \u6700\u5927\u503c
1 0 1<\/td><\/tr>
gbase_export_directory<\/td>\u7528\u4e8e\u6307\u5b9a\u662f\u5426\u81ea\u52a8\u521b\u5efa\u4e0e\u5bfc\u51fa\u6587\u4ef6\u540c\u540d\u7684\u76ee\u5f55\uff0c\u4f5c\u4e3a\u5bfc\u51fa\u6587\u4ef6\u7684\u76ee\u6807\u76ee\u5f55\u3002
\u8be5\u53c2\u6570\u652f\u6301 hadoop \u6587\u4ef6\u548c\u672c\u5730\u6587\u4ef6\u7684\u5bfc\u51fa\uff0c\u6682\u4e0d\u652f\u6301 rmt \u8fdc\u7a0b\u5bfc\u51fa\u65b9\u5f0f\u3002
\u9ed8\u8ba4\u503c \u6700\u5c0f\u503c \u6700\u5927\u503c
1 0 1
\u5f53\u8be5\u53c2\u6570\u503c\u4e3a 1 \u65f6\uff0c\u4ee5\u5bfc\u51fa\u672c\u5730\u6587\u4ef6\u6216 Hadoop \u6587\u4ef6\u524d\uff0c\u81ea\u52a8\u521b\u5efa\u4e0e\u6587\u4ef6\u540c
\u540d\uff08\u4e0d\u542b\u6269\u5c55\u540d\uff09\u7684\u76ee\u5f55\u4f5c\u4e3a\u5bfc\u51fa\u7684\u76ee\u6807\u76ee\u5f55\uff0c\u53c2\u6570\u503c\u4e3a 0 \u65f6\u5219\u4e0d\u521b\u5efa\u76ee\u5f55\u3002<\/td><\/tr>
gbase_export_truncate_mode<\/td>\u96c6\u7fa4\u5b9a\u957f\u5bfc\u51fa\u529f\u80fd\uff0c\uff0c\u5f53\u7528\u6237\u6307\u5b9a\u6570\u636e\u6bcf\u5217\u5b57\u8282\u957f\u5ea6\u5c0f\u4e8e\u8868\u4e2d\u6570\u636e\u957f\u5ea6\uff0c
\u4e14\u5217\u7c7b\u578b\u4e3a\u5b57\u7b26\uff08char\u3001varchar\u3001text\uff09\u65f6\uff0c\u5bfc\u51fa\u6a21\u5757\u7684\u5904\u7406\u65b9\u5f0f\u3002
\u53d6\u503c\uff1a
0\uff1a \u622a\u65ad,\u4e0d\u62a5\u9519\u4e5f\u6ca1\u6709\u8b66\u544a
1\uff1a \u622a\u65ad\uff0c\u5e76\u589e\u52a0 warning
2\uff1a \u62a5\u9519
\u9ed8\u8ba4\u503c \u6700\u5c0f\u503c \u6700\u5927\u503c
0 0 2<\/td><\/tr>
gbase_export_write_timeout<\/td>\u53c2\u6570\u8bf4\u660e\uff1a\u7528\u4e8e\u6307\u5b9a\u5bfc\u51fa HDFS \u6587\u4ef6\u7684\u5199\u5165\u8d85\u65f6\u65f6\u95f4\uff0c\u5982\u679c\u5199\u5165\u4e00\u4e2a\u6570\u636e\u5757
\uff088M\uff09\u7684\u65f6\u95f4\u8d85\u8fc7\u6b64\u53c2\u6570\u503c\uff0c\u52a0\u8f7d\u4efb\u52a1\u5c06\u62a5\u9519\u505c\u6b62\u30020 \u8868\u793a\u6c38\u4e0d\u8d85\u65f6\u3002
\u53c2\u6570\u5355\u4f4d\uff1a\u79d2
\u9ed8\u8ba4\u503c \u6700\u5c0f\u503c \u6700\u5927\u503c
300 0 INT_MAX
<\/td><\/tr>
gbase_express_log<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u8bbe\u7f6e\u662f\u5426\u8bb0\u5f55 express.log\u3002
\u5982\u679c\u8fd9\u4e2a\u53c2\u6570\u8bbe\u4e3a 1\uff0c\u5219\u8bb0\u5f55\u65e5\u5fd7\uff0c\u65e5\u5fd7\u8def\u5f84\u4e3a
$GBASE_BASE\/log\/$GBASE_SID\uff1b\u5982\u679c\u8fd9\u4e2a\u53c2\u6570\u8bbe\u4e3a 0\uff0c\u5219\u4e0d\u8bb0\u5f55\u65e5\u5fd7\u3002
\u8be5\u53c2\u6570\u9ed8\u8ba4\u503c\u662f 1\u3002
<\/td><\/tr>
gbase_fast_update<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u8bbe\u7f6e\u662f\u5426\u4f7f\u7528\u5feb\u901f UPDATE \u6a21\u5f0f\u3002 \u5982\u679c\u8fd9\u4e2a\u53c2\u6570\u8bbe\u4e3a 1,\u662f\u5185\u90e8\u7c7b\u4f3c\u4e8e\u505a\u4e86 DELETE+INSERT \u64cd\u4f5c(\u9002\u7528\u4e8e\u66f4\u65b0 \u8be5\u5217\u4e2d\u8f83\u5c11\u7684\u6570\u636e\uff09\uff1b\u5982\u679c\u8fd9\u4e2a\u53c2\u6570\u8bbe\u4e3a 0\uff0c\u662f\u91cd\u5efa\u66f4\u65b0\u5217\u6240\u6709\u6570\u636e\uff08\u5373\u6279\u91cf \u6a21\u5f0f\uff09\u3002 \u8be5\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u662f 0\u3002<\/td><\/tr>
gbase_force_bin_like<\/td>\u5f3a\u5236\u4e8c\u8fdb\u5236\u7684like\u5224\u65ad\uff0c\u907f\u514d\u6709\u4e2d\u6587\u4e71\u7801\u65f6,like\u7ed3\u679c\u96c6\u9519\u8bef\u3002<\/td><\/tr>
gbase_gcluster_node_flag<\/td>\u5f53\u524d\u8282\u70b9\u662f\u4e0d\u662fnode\u8282\u70b9\u3002
0 \u4e0d\u662fnode
1 \u662fnode<\/td><\/tr>
gbase_global_variable_persistent<\/td>A\u3001\u6253\u5f00\u5f00\u5173
set gbase_global_variable_persistent=1
B\u3001\u8bbe\u7f6e\u9700\u8981\u6301\u4e45\u5316\u7684\u53c2\u6570\uff0c\u9700\u8981\u4f7f\u7528global\u7ea7\u522b
set global max_allowed_packet=xxx
C\u3001\u67e5\u770bgcluster\u548cgnode\u5c42\u7684\u914d\u7f6e\u6587\u4ef6\uff0c\u662f\u5426\u5df2\u7ecf\u6309\u9700\u8981\u6539\u53d8\uff0c\u68c0\u67e5\u5176\u4ed6\u672a\u8bbe\u7f6e\u7684\u503c\u662f\u5426\u8fd8\u662f\u539f\u503c\u3002
<\/td><\/tr>
gbase_hbase_server_name<\/td>hbase hive \u670d\u52a1\u5668\u5730\u5740. \u3010\u731c\u6d4b\u662fUP\u4f7f\u7528\u3011<\/td><\/tr>
gbase_hdfs_auth_mode<\/td>\u679a\u4e3e\u578b\u53d8\u91cf\uff0c\u7528\u4e8e\u6307\u5b9a HDFS \u8ba4\u8bc1\u65b9\u5f0f\u3002
simple\uff1a\u4f7f\u7528\u57fa\u672c\u8ba4\u8bc1
kerberos\uff1a\u4f7f\u7528 Kerberos \u8ba4\u8bc1
\u4e0e\u5176\u5b83\u679a\u4e3e\u578b\u53d8\u91cf\u76f8\u540c\uff0c\u53c2\u6570\u503c\u652f\u6301\u5927\u5199\u3001\u5c0f\u5199\u53ca\u5927\u5c0f\u6df7\u5408\u5f62\u5f0f\uff0c\u652f\u6301\u7531\u9996\u5b57\u6bcd\u5f00\u59cb\u7684\u4e00\u4e2a\u6216\u591a\u4e2a\u8fde\u7eed\u5b57\u6bcd\u7684\u7f29\u5199\u5f62\u5f0f\uff0c\u6bd4\u5982\u4ee5\u4e0b\u65b9\u5f0f\u4e3a\u5408\u6cd5\u7684\u53c2\u6570\u503c\uff1a
simple, Simple, SIMPLE, kerberos, Kerberos, KERBEROS,
s, sim, simp, k, ker, Kerb
\u9ed8\u8ba4\u503c \u6700\u5c0f\u503c \u6700\u5927\u503c
simple \u65e0 \u65e0<\/td><\/tr>
gbase_hdfs_client_timeout<\/td>\u7528\u4e8e\u6307\u5b9a\u52a0\u8f7d\u6216\u5bfc\u51fa HDFS \u6587\u4ef6\u65f6\u975e\u8bfb\u5199\u6587\u4ef6\u64cd\u4f5c\u8d85\u65f6\u65f6\u95f4\uff0c0 \u8868\u793a\u6c38\u4e0d\u8d85
\u65f6\u3002\u8be5\u53c2\u6570\u63a7\u5236\u8fde\u63a5\u5230 HDFS\u3001\u5728 HDFS \u4e0a\u521b\u5efa\u76ee\u5f55\u3001\u67e5\u8be2 HDFS \u6587\u4ef6\u5927\u5c0f\u7b49\u975e\u8bfb
\u5199\u6587\u4ef6\u64cd\u4f5c\u7684\u8d85\u65f6\u65f6\u95f4\uff0c\u8be5\u53c2\u6570\u4e0e gbase_loader_read_timeout \u548c
gbase_export_write_timeout \u540c\u65f6\u8d77\u4f5c\u7528\u3002
\u9ed8\u8ba4\u503c \u6700\u5c0f\u503c \u6700\u5927\u503c
600 0 INT_MAX<\/td><\/tr>
gbase_hdfs_max_retry<\/td>\u4e3a\u5e94\u5bf9\u8bbf\u95eehadoop\u96c6\u7fa4\u65f6\u7f51\u7edc\u538b\u529b\u8fc7\u5927\u7684\u5f02\u5e38\u60c5\u51b5\uff0c\u901a\u8fc7\u53c2\u6570\u63a7\u5236webhdfs\u8bbf\u95ee\u8d85\u65f6\u540e\u7684\u91cd\u8bd5\u6b21\u6570\u3002<\/td><\/tr>
gbase_hdfs_port<\/td>\u8be5\u53c2\u6570\u4e3a\u6574\u578b\u53d8\u91cf\uff0c\u7528\u4e8e\u6307\u5b9a HDFS \u670d\u52a1\u7684\u8fde\u63a5\u7aef\u53e3\u3002\u9ed8\u8ba4\u503c\u4e3a 0\uff0c\u8868\u793a\u4f7f
\u7528\u76f8\u5e94\u534f\u8bae\u4e0b\u7684 Hadoop \u9ed8\u8ba4\u7aef\u53e3\uff0c\u5373\uff1ahttp \u534f\u8bae\u9ed8\u8ba4 50070 \u7aef\u53e3\uff0chttps \u534f\u8bae
\u9ed8\u8ba4 50470 \u7aef\u53e3\uff0crpc \u534f\u8bae\u9ed8\u8ba4 9000 \u7aef\u53e3\u3002
\u9ed8\u8ba4\u503c \u6700\u5c0f\u503c \u6700\u5927\u503c
0 0 65535<\/td><\/tr>
gbase_hdfs_token_renew_interval<\/td>\u53c2\u6570\u8bf4\u660e\uff1a\u8be5\u53c2\u6570\u4e3a\u6574\u578b\u53d8\u91cf\uff0c\u7528\u4e8e\u5728 HDFS \u5355\u70b9\u767b\u5f55\u529f\u80fd\u4e2d\uff0c\u6307\u5b9a\u540e\u53f0\u81ea\u52a8\u66f4\u65b0 HDFS \u8bbf\u95ee token \u7684\u5237\u65b0\u65f6\u95f4\u95f4\u9694\u3002\u53c2\u6570\u5355\u4f4d\uff1a\u79d2\u3002
\u9ed8\u8ba4\u503c \u6700\u5c0f\u503c \u6700\u5927\u503c
3600 60 UINT_MAX<\/td><\/tr>
gbase_high_priority_weight<\/td>GCluster\u96c6\u7fa4\u652f\u6301\u591a\u8d44\u6e90\u7ec4\uff0c\u9ad8\u7ea7\u522b\u7684\u6743\u91cd
gbase high priority weight(80-100) ,default is 80<\/td><\/tr>
gbase_hybrid_store<\/td>\u63a7\u5236\u662f\u5426\u4f7f\u7528\u884c\u5b58\u6570\u636e\uff1a
0\uff1a\u4e0d\u4f7f\u7528\uff1b
1\uff08\u9ed8\u8ba4\uff09\uff1aserver\u81ea\u52a8\u5224\u65ad\u662f\u5426\u4f7f\u7528\uff1b
2\uff1a\u5f3a\u5236\u4f7f\u7528\uff0c\u6709\u5219\u4e00\u5b9a\u4f7f\u7528\uff1b
<\/td><\/tr>
gbase_hybrid_store_page_size<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u8bbe\u7f6e\u884c\u5b58\u6570\u636e\u4e2d\u4e00\u4e2a page \u7684\u5927\u5c0f\uff08\u5355\u4f4d\u4e3a\u5b57\u8282\uff09\u3002
Page \u9875\u7684\u5212\u5206\u5927\u5c0f\u4f1a\u5f71\u54cd\u884c\u5b58\u50a8\u5217\u7684\u67e5\u8be2\u65f6\u95f4\u3002<\/td><\/tr>
gbase_insertselect_parallel_forever<\/td>insert select \u5404\u4e2a\u8282\u70b9\u4e00\u76f4\u672c\u5730\u5e76\u884c\u6267\u884c\u3002\u7c7b\u4f3chint\u4e0b\u53d1\u3002<\/td><\/tr>
gbase_kafka_keytab<\/td>\u5b57\u7b26\u4e32\u53d8\u91cf\uff0c\u7528\u4e8e\u6307\u5b9a Kerberos \u8ba4\u8bc1\u4e2d\u5b89\u5168\u4e3b\u4f53 keytab \u6587\u4ef6\u540d\u3002
\u4e0e gbase_hdfs_keytab \u5b8c\u5168\u76f8\u540c\u7684\u7528\u6cd5\u3002<\/td><\/tr>
gbase_kafka_principal<\/td>\u5b57\u7b26\u4e32\u53d8\u91cf\uff0c\u7528\u4e8e\u6307\u5b9a Kerberos \u8ba4\u8bc1\u4e2d\u5b89\u5168\u4e3b\u4f53\u540d\u79f0\u3002\u8fd9\u4e2a\u53c2\u6570\u4e5f\u7528\u4e8e\u6307
\u5b9a\u4e0e\u8be5 principal \u5bf9\u5e94\u7684 keytab \u6587\u4ef6\u540d\u3002
\u4e0e gbase_hdfs_principal \u5b8c\u5168\u76f8\u540c\u7684\u7528\u6cd5\u3002<\/td><\/tr>
gbase_krb5cc_tmpdir<\/td>\u7528\u4e8e\u6307\u5b9a hdfs \u52a0\u8f7d\u5bfc\u51fa kerberos \u8ba4\u8bc1\u7684\u4e34\u65f6\u4fe1\u606f\u5b58\u50a8\u76ee\u5f55\u3002\u8be5\u53c2\u6570\u4e3a\u53ea
\u8bfb\u53d8\u91cf\uff0c\u53ea\u80fd\u901a\u8fc7\u5355\u673a\u548c\u96c6\u7fa4\u914d\u7f6e\u6587\u4ef6\u914d\u7f6e\u3002
\u8be5\u53c2\u6570\u5728 gnode \u4e0a\u7684\u9ed8\u8ba4\u503c\u662f$GBASE_BASE\/tmpdata\/krb5cc_gbase\uff0c\u5728
gcluster \u4e0a\u7684\u9ed8\u8ba4\u503c\u662f$GCLUSTER_BASE\/tmpdata\/krb5cc_gcluster\u3002<\/td><\/tr>
gbase_loader_buffer_count<\/td>\u7528\u4e8e\u63a7\u5236\u52a0\u8f7d\u5360\u7528\u5185\u5b58\u6570\u91cf\uff0c\u65b0\u589e\u53c2\u6570 gbase_loader_buffer_count\uff0c\u7528
\u4e8e\u6307\u5b9a\u52a0\u8f7d\u8fc7\u7a0b\u4e2d\u5206\u914d\u7684\u8bfb\u7f13\u51b2\u5185\u5b58\u5757\u6570\u91cf\uff08\u5355\u5757\u5185\u5b58\u56fa\u5b9a\u5927\u5c0f\u4e3a 8M\uff09\u3002
\u9ed8\u8ba4\u503c \u6700\u5c0f\u503c \u6700\u5927\u503c
16 2 128
\u53c2\u6570\u8bf4\u660e\uff1a\u7528\u4e8e\u6307\u5b9a\u52a0\u8f7d\u8fc7\u7a0b\u4e2d\u5206\u914d\u7684\u8bfb\u7f13\u51b2\u5185\u5b58\u5757\u6570\u91cf\uff0c\u5176\u4e2d\u5355\u5757\u5185\u5b58
\u56fa\u5b9a\u5927\u5c0f\u4e3a 8M\uff0c\u6bcf\u4e2a\u52a0\u8f7d\u4efb\u52a1\u5355\u4e2a\u8282\u70b9\u5360\u7528\u7684\u8bfb\u7f13\u51b2\u5185\u5b58\u4e3a 8M*gbase_loader_buffer_count\u3002<\/td><\/tr>
gbase_loader_check_charset<\/td>\u7528\u4e8e\u8bbe\u7f6e\u662f\u5426\u6253\u5f00\u5b57\u7b26\u96c6\u68c0\u67e5\u529f\u80fd\uff0c\u8be5\u53c2\u6570\u4ec5\u5bf9\u52a0\u8f7d\u6709\u6548\uff0c\u5bf9\u5176\u4ed6 SQL \u65e0
\u5f71\u54cd\u3002
\u9ed8\u8ba4\u503c \u6700\u5c0f\u503c \u6700\u5927\u503c
0 0 1<\/td><\/tr>
gbase_loader_last_task_id<\/td>\u83b7\u5f97\u6700\u540e\u4e00\u6b21\u52a0\u8f7d\u7684\u4efb\u52a1\u53f7taskID,\u53ef\u4ee5\u901a\u8fc7show\u65b9\u5f0f\u5f97\u5230\u3002<\/td><\/tr>
gbase_loader_line_length<\/td>\u8bb0\u8f7d\u4e00\u884c\u8bb0\u5f55\u6700\u5927\u5141\u8bb8\u957f\u5ea6\u3002\u5982\u8d85\u8fc7\uff0c\u8be5\u884c\u8bb0\u5f55\u4e3a\u9519\u8bef\u6570\u636e\u3002\u9ed8\u8ba44M<\/td><\/tr>
gbase_loader_logs_collect<\/td>\u7528\u4e8e\u63a7\u5236\u65e5\u5fd7\u6c47\u603b\u529f\u80fd\u7684\u5f00\u542f\u3002ON\uff1a\u8868\u793a\u5f00\u542f\u52a0\u8f7d\u9519\u8bef\u6570\u636e\u65e5\u5fd7\u6c47\u603b\u529f\u80fd\uff0c
\u52a0\u8f7d\u8fc7\u7a0b\u4e2d\u5b9e\u65f6\u7684\u5c06\u9519\u8bef\u6570\u636e\u4e0e\u6eaf\u6e90\u4fe1\u606f\u6c47\u603b\u81f3\u52a0\u8f7d\u53d1\u542f\u8282\u70b9\u3002OFF\uff1a\u8868\u793a\u5173\u95ed
\u52a0\u8f7d\u9519\u8bef\u6570\u636e\u65e5\u5fd7\u6c47\u603b\u529f\u80fd\uff0c\u52a0\u8f7d\u9075\u5faa\u73b0\u6709\u89c4\u5219\uff0c\u9519\u8bef\u6570\u636e\u65e5\u5fd7\u4e0e\u6eaf\u6e90\u4fe1\u606f\u65e5
\u5fd7\u5b58\u5728\u5728\u52a0\u8f7d\u8282\u70b9\u3002
\u6709\u6548\u503c \u9ed8\u8ba4\u503c \u6700\u5c0f\u503c \u6700\u5927\u503c
1 (ON)\u3001 0 (OFF) 1 (ON) 0 1
<\/td><\/tr>
gbase_loader_logs_dir<\/td>\u7528\u6237\u6307\u5b9a\u9519\u8bef\u6570\u636e\u4e0e\u6eaf\u6e90\u65e5\u5fd7\u6587\u4ef6\u6c47\u603b\u76ee\u5f55\u3002
\u9ed8\u8ba4\u503c \u6700\u5c0f\u503c \u6700\u5927\u503c
gcluster:
$GCLUSTER_HOME\/log\/gcluster\/loader_logs\/
gbase:
$GBASE_HOME\/log\/gbase\/loader_logs\/
\u65e0 \u65e0
<\/td><\/tr>
gbase_loader_max_line_length<\/td>\u7528\u4e8e\u8bbe\u7f6e\u6e90\u6587\u4ef6\u4e2d\u4e00\u884c\u6570\u636e\u7684\u6700\u5927\u957f\u5ea6\uff0c\u8d85\u8fc7\u6b64\u957f\u5ea6\uff0c\u52a0\u8f7d\u4efb\u52a1\u5c06\u62a5\u9519\u505c
\u6b62\u3002\u5355\u4f4d\uff1a\u5b57\u8282\u3002
\u9ed8\u8ba4\u503c \u6700\u5c0f\u503c \u6700\u5927\u503c
4194304 4194304 9223372036854775807
\uff08LONG_MAX\uff09<\/td><\/tr>
gbase_loader_parallel_degree<\/td>\u589e\u52a0\u72ec\u7acb\u53c2\u6570\u80fd\u591f\u901a\u8fc7\u914d\u7f6e\u6587\u4ef6\u8bbe\u7f6e\u5168\u5c40\u7684\u52a0\u8f7d\u5e76\u884c\u5ea6\uff0c\u8be5\u53c2\u6570\u4ec5\u5bf9\u52a0\u8f7d\u6709\u6548\uff0c\u5bf9\u5176\u4ed6SQL\u65e0\u5f71\u54cd\u3002\u589e\u52a0\u8be5\u53c2\u6570\u540e\uff0c\u8bbe\u7f6egbase_parallel_degree\u53c2\u6570\u5bf9\u52a0\u8f7d\u4e0d\u518d\u6709\u6548<\/td><\/tr>
gbase_loader_read_timeout<\/td>\u7528\u4e8e\u6307\u5b9a\u8bfb\u53d6 FTP\/HTTP\/SFTP \u6587\u4ef6\u7684\u8d85\u65f6\u65f6\u95f4\uff0c\u5982\u679c\u586b\u5145\u4e00\u4e2a\u6570\u636e\u5757\uff088M\uff09
\u7684\u65f6\u95f4\u8d85\u8fc7\u6b64\u53c2\u6570\u503c\uff0c\u52a0\u8f7d\u4efb\u52a1\u5c06\u62a5\u9519\u505c\u6b62\u30020 \u8868\u793a\u6c38\u4e0d\u8d85\u65f6\u3002
\u9ed8\u8ba4\u503c \u6700\u5c0f\u503c \u6700\u5927\u503c
300 0 UINT_MAX<\/td><\/tr>
gbase_loader_wildcard_switch<\/td>\u63a7\u5236\u662f\u5426\u6253\u5f00\u591a\u7ea7\u76ee\u5f55\u901a\u914d\u52a0\u8f7d\u529f\u80fd\u3002
ON\uff1a\u8868\u793a\u5f00\u542f\u591a\u7ea7\u76ee\u5f55\u901a\u914d\u529f\u80fd\uff0c\u52a0\u8f7d\u8fc7\u7a0b\u4e2d\u5bf9 SQL \u4e2d\u542b\u6709\u901a\u914d\u7b26\u7684\u6587\u4ef6
\u8def\u5f84\u901a\u914d\u5c55\u5f00\uff0c\u83b7\u5f97\u7cbe\u786e\u6587\u4ef6\u8def\u5f84\uff1b
OFF\uff1a\u8868\u793a\u5173\u95ed\u591a\u7ea7\u76ee\u5f55\u901a\u914d\u529f\u80fd\uff0c\u52a0\u8f7d\u9075\u5faa\u73b0\u6709\u89c4\u5219\uff0c\u6309 SQL \u6307\u5b9a\u7684\u8def\u5f84
\u8fdb\u884c\u52a0\u8f7d\u3002
\u9ed8\u8ba4\u503c \u6700\u5c0f\u503c \u6700\u5927\u503c
1(ON) 0(OFF) 1(ON)<\/td><\/tr>
gbase_low_priority_weight<\/td>GCluster\u96c6\u7fa4\u652f\u6301\u591a\u8d44\u6e90\u7ec4\uff0c\u4f4e\u7ea7\u522b\u7ec4\u7684\u6743\u91cd
gbase low priority weight (40 - 60),  default is 40<\/td><\/tr>
gbase_max_allowed_level<\/td>\u7528\u4e8e\u8bbe\u7f6e\u5206\u7ea7\u67e5\u8be2\u4e2d\u5141\u8bb8\u7684\u6700\u5927level\u6570\uff0c\u5373\u6811\u7684\u6700\u5927\u5c42\u6570
\u589e\u52a0\u76ee\u7684\uff1a\u4e3a\u4e86\u517c\u5bb9oracle\u751f\u6210\u5e8f\u5217\u7684\u529f\u80fd\uff0c\u5982\uff1a
selectlevelfromdualconnectbylevel<=100;
\u8be5sql\u4f1a\u4ea7\u751f1\u5230100\u7684\u5e8f\u5217oracle\u5faa\u5e8f\u6b7b\u5faa\u73af\u7684\u4ea7\u751f\uff0c\u6700\u7ec8\u4f1a\u62a5\u8d44\u6e90\u4e0d\u8db3\u9519\u8bef\u9000\u51fa\uff1b
8a\u7531\u4e8e\u4f1a\u4e0d\u505c\u7684\u5f80\u5ba2\u6237\u7aef\u53d1\u6570\u636e\uff0c\u4f1a\u89e6\u53d1\u64cd\u4f5c\u7cfb\u7edf\u7684OOM\u673a\u5236\uff0c\u56e0\u6b64\u4e0d\u5141\u8bb8\u6b7b\u5faa\u73af\u7684\u4ea7\u751f\uff0c\u6545\u589e\u52a0\u8be5\u53c2\u6570\u63a7\u5236\u6700\u5927level\u6570\uff0c\u8d85\u8fc7\u6b64level\u4f1a\u62a5\u9519<\/td><\/tr>
gbase_memory_pct_target<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u8bbe\u7f6e\u5185\u5b58\u7684\u53ef\u7528\u6bd4\u4f8b\uff08gbased \u670d\u52a1\u53ef\u7528\u5185\u5b58\u5360\u673a\u5668\u7269\u7406\u5185\u5b58
\u5927\u5c0f\u7684\u6bd4\u4f8b\uff09\u3002\u7cfb\u7edf\u5185\u5b58 gbase_memory_pct_target \u7684\u7ed3\u679c\u901a\u5e38\u4f5c\u4e3a Server
\u542f\u52a8\u65f6\u548c\u8fd0\u884c\u65f6\uff0c\u5bf9\u4e8e\u5185\u5b58\u4e0a\u9650\u548c\u4e0b\u9650\u7684\u68c0\u67e5\u3002
\u5728 GBase 8a \u4e2d\uff0c\u8fd9\u4e2a\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u662f 0.8\uff0c\u4e0d\u5efa\u8bae\u7528\u6237\u5bf9\u8be5\u53c2\u6570\u8fdb\u884c\u4fee\u6539\u3002<\/td><\/tr>
gbase_mid_priority_weight<\/td>GCluster\u96c6\u7fa4\u652f\u6301\u591a\u8d44\u6e90\u7ec4
gbase middle priority weight (60 -80),  default is 60<\/td><\/tr>
gbase_min_priority_weight<\/td>GCluster\u96c6\u7fa4\u652f\u6301\u591a\u8d44\u6e90\u7ec4
gbase min priority weight(20 - 40),  fixed value is 20<\/td><\/tr>
gbase_mmap_hugefile_dir<\/td>GCluster\u96c6\u7fa4\u652f\u6301\u591a\u8d44\u6e90\u7ec4
gbase min priority weight(20 - 40),  fixed value is 20<\/td><\/tr>
gbase_optimizer_between_join<\/td>\u63a7\u5236\u662f\u5426\u4f7f\u7528betweenjoin\u4f18\u5316\uff0c0\uff1a\u5173\u95ed\uff1b1\uff1a\u5f00\u542f\uff08\u9ed8\u8ba4\uff09\uff1b2\uff1a\u5f00\u542f\uff0c\u5e76\u4e14\u542b\u7b49\u503c\u6761\u4ef6\u7684\u8fde\u63a5\u4e5f\u4f18\u5148\u4f7f\u7528betweenjoin\uff0c\u5982\u201cwheret1.d=t2.dandt1.abetweent2.bandt2.c\u201d<\/td><\/tr>
gbase_parallel_degree<\/td>\u63a7\u5236SQL\u6267\u884c\u7684\u5e76\u884c\u5ea6\uff08\u5e76\u884c\u7ebf\u7a0b\u6570\uff09<\/td><\/tr>
gbase_parallel_execution<\/td>\u5e76\u884c\u5f00\u5173\u6807\u5fd7
1: enable parallel execute with multi-thread,
0(default): disable parallel execute<\/td><\/tr>
gbase_parallel_max_thread_in_pool<\/td>\u7528\u4e8e\u914d\u7f6e\u5e76\u884c\u6267\u884c\u5668\u7ebf\u7a0b\u6c60\u4e2d\u7684\u6700\u5927\u7ebf\u7a0b\u4e2a\u6570\uff0c\u9ed8\u8ba4\u4e3a\u7cfb\u7edfCPU\u6838\u6570
The number of threads in the thread pool, default(cores)<\/td><\/tr>
gbase_parallel_threshold<\/td>\u7b97\u5b50\u5e76\u884c\u7684\u6570\u636e\u91cf\u9608\u503c\u3002\u9ed8\u8ba4\u4e3a10000\uff0c\u5c0f\u4e8e\u6b64\u503c\u76f4\u63a5\u4e32\u884c\u3002<\/td><\/tr>
gbase_send_result_mode<\/td>\u7528\u4e8e\u8bbe\u7f6e\u662f\u5426\u4f7f\u7528ResultSender\uff0c\u5982\u679c\u4f7f\u7528\u5219\u670d\u52a1\u5728\u5904\u7406\u4e00\u5757\u7ed3\u679c\u540e\u4f1a\u9a6c\u4e0a\u53d1\u7ed9\u5ba2\u6237\u7aef\uff0c\u5982\u679c\u4e0d\u4f7f\u7528\uff0c\u5219\u670d\u52a1\u5728\u5904\u7406\u5168\u90e8\u7ed3\u679c\u540e\u624d\u53d1\u9001\u7ed9\u5ba2\u6237\u7aef<\/td><\/tr>
gbase_show_ident_case_sensitive<\/td>\u7edf\u4e00\u5217\u540d\u5927\u5c0f\u5199\u3002
0-\u9ed8\u8ba4\u503c\uff0c\u5217\u540d\u7684\u8f93\u51fa\u683c\u5f0f\u548c\u8f93\u5165\u76f8\u540c\uff0c\u6ca1\u6709\u8f6c\u6362\u3002
1-\u5217\u540d\u8f6c\u4e3a\u5c0f\u5199\u8f93\u51fa
2-\u5217\u540d\u8f6c\u4e3a\u5927\u5199\u8f93\u51fa<\/td><\/tr>
gbase_show_version<\/td>\u662f\u5426\u5141\u8bb8\u901a\u8fc7select version\u7b49\u65b9\u5f0f\u83b7\u5f97\u6570\u636e\u5e93\u7248\u672c\u3002\u9ed8\u8ba41\u5141\u8bb8\u3002 0\u4e0d\u5141\u8bb8\uff0c\u5c06\u663e\u793a\u4e3a\u591a\u4e2a\u578b\u53f7*****\u4ee3\u66ff\u3002 \u53ea\u5141\u8bb8\u901a\u8fc7\u914d\u7f6e\u6587\u4ef6\u8fdb\u884c\u4fee\u6539\u3002 \u540c\u65f6gc,gn\u90fd\u5efa\u8bae\u4fee\u6539\u3002<\/td><\/tr>
gbase_skip_trim<\/td>\u8df3\u8fc7trim,rtrim,ltrim,\u524d\u63d0\u662f\u9700\u8981\u4fdd\u8bc1\u6570\u636e\u7684\u524d\u540e\u6ca1\u6709\u7a7a\u683c\uff0c\u4f8b\u5982
select * from t1 where trim(a)='aa';
--->\u4f18\u5316\u6210
select * from t1 where a='aa';<\/td><\/tr>
gbase_sql_trace_level<\/td>\u63a7\u5236expresstracelog\u8f93\u51fa\u5185\u5bb9\u7684\u8be6\u7ec6\u7a0b\u5ea6\uff0c\u52061\u30012\u30013\u7ea7\uff0c3\u7ea7\u4e3a\u6700\u8be6\u7ec6<\/td><\/tr>
gbase_tcmalloc_aggressive_decommit_threadhold_load_factor<\/td>\u79ef\u6781\u56de\u6536\u5185\u5b58\u9608\u503c,\u9ed8\u8ba4\u4e3a0.9\uff0c\u5927\u4e8e\u6b64\u503c\u56de\u6536tcmalloc_freelist\u6301\u6709\u6240\u6709\u5185\u5b58<\/td><\/tr>
gbase_tcmalloc_balanced_decommit_threadhold_load_factor<\/td>\u5747\u8861\u56de\u6536\u5185\u5b58\u9608\u503c.\u9ed8\u8ba4\u4e3a0.6,\u5927\u4e8e\u6b64\u503c\uff0c\u5c0f\u4e8egbase_tcmalloc_aggressive_decommit_threadhold_load_factor\uff0c\u91c7\u7528\u5747\u8861\u56de\u6536\u7b56\u7565\uff0c\u5373pageheap_freelist_bytes\/app_used_bytes\u6bd4\u503c\u63a7\u5236\u5728\u4e00\u5b9a\u8303\u56f4\u3002<\/td><\/tr>
gbase_tcmalloc_check_memory_threadhold_rate<\/td>\u786e\u8ba4gbased\u4e3a\u7cfb\u7edf\u5185\u5b58\u4f7f\u7528\u74f6\u9888\u9608\u503c\uff08gbased\u4f7f\u7528\u5185\u5b58\/\u7cfb\u7edf\u7269\u7406\u5185\u5b58\uff09
\u9ed8\u8ba4\u503c\u4e3a0.6
\u5927\u4e8e\u6b64\u503c\uff0c\u8fdb\u884c\u9002\u5ea6\u5185\u5b58\u56de\u6536<\/td><\/tr>
gbase_tcmalloc_freememory_hold_ratio<\/td>\u5747\u8861\u56de\u6536\u5185\u5b58\u7b56\u7565\u4e0b\uff0cpageheap_freelist_bytes\/app_used_bytes\u6bd4\u503c\u7684\u6700\u5927\u9608\u503c.
\u5927\u4e8e\u6b64\u503c\uff0c\u56de\u6536tcmalloc\u6301\u6709\u7684\u90e8\u5206\u5185\u5b58<\/td><\/tr>
gbase_tcmalloc_releasememorytoos_threadhold_rate<\/td>\u5747\u8861\u56de\u6536\u5185\u5b58\u7b56\u7565\u4e0b\uff0c\u56de\u6536\u5185\u5b58\u7684\u6700\u5c0f\u7c92\u5ea6\u3002
\u9ed8\u8ba4\u503c\u4e3a0.05
\u56de\u6536\u5185\u5b58\u91cf\u4e3a\uff1a\u7cfb\u7edf\u7269\u7406\u5185\u5b58*gbase_tcmalloc_releasememoryToOS_threadhold_rate<\/td><\/tr>
gbase_to_number_str2dec<\/td>to_number\u51fd\u6570\u5728\u5904\u7406\u5b57\u7b26\u4e32\u7684\u60c5\u51b5\u4e0b\uff0c\u5982\u679c\u53c2\u6570\u4e3a0(\u9ed8\u8ba4)\u5173\u95ed\uff0c\u5219\u8f6c\u4e3adouble\u7c7b\u578b\u3002\uff1b\u53c2\u6570\u4e3a1\u6253\u5f00\u65f6\uff0c\u8f6c\u4e3adecimal(65,30)\u7c7b\u578b\u3002<\/td><\/tr>
gbase_truncate_nanosecond<\/td>\u63a7\u5236\u5f85\u52a0\u8f7d\u7684dataetime\u548ctimestamp\u7c7b\u578b\u6570\u636e\u7684\u5fae\u79d2\u8d85\u8fc76\u4f4d\u662f\u5426\u9636\u6bb5\u3002
0\uff1a\u4e0d\u622a\u65ad\uff0c\u5fae\u79d2\u8d85\u8fc7\u4f4d\u5c06\u4f5c\u4e3a\u9519\u8bef\u6570\u636e
1\uff1a\u622a\u65ad\uff0c\u53d6\u524d6\u4f4d\u5165\u5e93\u3002
\u7531\u4e8etimestamp\u4e0d\u652f\u6301\u5fae\u79d2\uff0c\u6240\u4ee5\u5165\u5e93\u540e\u7684timestamp\u4e0d\u5305\u62ec\u5fae\u79d2\u3002<\/td><\/tr>
gbase_tx_log_dir<\/td>\u4e8b\u52a1\u65e5\u5fd7\u76f8\u5173\u6587\u4ef6\u6240\u5728\u7684\u76ee\u5f55<\/td><\/tr>
gbase_tx_log_flush_time<\/td>\u4e8b\u52a1\u65e5\u5fd7\u9694\u591a\u4e45\uff08\u79d2\uff09\u68c0\u67e5\u4e00\u6b21\u662f\u5426\u9700\u8981\u540c\u6b65\u3002<\/td><\/tr>
gbase_type_conversion_warn2err<\/td>1\u3001\u6240\u6709\u8b66\u544a\u8f6c\u6362\u62a5\u9519\u7684\u4fee\u6539\u90fd\u5728\u6b64\u5f00\u5173\u7684\u63a7\u5236\u4e4b\u4e0b
2\u3001\u7f6e\u4f4d abort_on_warning \u4ee5\u53ca\u63d0\u5347push_warning\u7684level\u4e3aerror
3\u3001\u5bf9\u4e8e\u6ca1\u6709\u62a5\u8b66\u7684\u60c5\u51b5\uff0c\u6355\u83b7\u62a5\u8b66\u5e76\u540c\u65f6\u62a5\u9519<\/td><\/tr>
gcluster_adjust_nodes_before_redist<\/td>\u8be5\u53c2\u6570\u7528\u4e8e\u63a7\u5236\u5bf9nodedatamap\u7cfb\u7edf\u8868\u4e2d\u4e0d\u5b58\u5728\u7684\u96c6\u7fa4\u8282\u70b9\u662f\u5426\u5141\u8bb8\u6267\u884cSQL\u3002\u5728\u91cd\u5206\u5e03\u671f\u95f4\u9700\u8981\u8bbe\u7f6e\u8be5\u503c\u4e3a0\u3002\u8be5\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u7f3a\u7701\u4e3a0\u3002
\u53c2\u6570=0\u5141\u8bb8\uff1b
\u53c2\u6570=1\u4e0d\u5141\u8bb8\uff1b<\/td><\/tr>
gcluster_allow_sg_lost<\/td>\u5141\u8bb8\u4e3b\u5907\u5206\u7247\u621685\u7248\u672c\u91cc\u4e00\u4e2asafegroup\u91cc\u7684\u8282\u70b9\u5168\u90e8\u6545\u969c\u3002\u6570\u636e\u5e93\u4ece\u4e0d\u5b8c\u6574\u7684\u6570\u636e\u8282\u70b9\u7ee7\u7eed\u67e5\u8be2\uff0c\u5ffd\u7565\u7ed3\u679c\u7684\u6b63\u786e\u6027\u3002<\/td><\/tr>
gcluster_async_connect_timeout<\/td>\u5f02\u6b65\u6267\u884c\u5668\u5efa\u7acb\u8fde\u63a5\u65f6\u7684\u8fde\u63a5\u8d85\u65f6\u53c2\u6570\u3002\u5982\u679c\u7f51\u7edc\u72b6\u6001\u975e\u5e38\u4e0d\u597d\uff0c\u5efa\u8bae\u63d0\u9ad8\u8be5\u53c2\u6570\u3002<\/td><\/tr>
gcluster_connect_net_read_timeout<\/td>\u4e0b\u53d1\u7684SQL,\u6700\u5927\u5141\u8bb8\u7684\u6267\u884c\u65f6\u95f4\u957f\u5ea6\u3002\u672c\u53c2\u6570\u662f\u8bfb\u53d6\u8fd4\u56de\u8d85\u65f6\u3002\u8d85\u65f6\u81ea\u52a8kill\u4efb\u52a1<\/td><\/tr>
gcluster_connect_net_write_timeout<\/td>\u4e0b\u53d1\u7684SQL,\u6700\u5927\u5141\u8bb8\u7684\u6267\u884c\u65f6\u95f4\u957f\u5ea6\u3002\u672c\u53c2\u6570\u662f\u4e0b\u53d1\u547d\u4ee4\u5199\u5165\u8d85\u65f6\u3002\u8d85\u65f6\u81ea\u52a8kill\u4efb\u52a1<\/td><\/tr>
gcluster_count_optimize<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u8bbe\u7f6e\u5bf9\u5355\u8868\u8fdb\u884ccount(*)\u65f6,\u4e0d\u4ea7\u751f\u4e2d\u95f4\u7ed3\u679c\u8868,gcluster\u76f4\u63a5\u8ba1\u7b97\u7ed3\u679c\u503c\u3002\u8be5\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u662f1\u3002
\u53c2\u6570=0:\u6309\u7167\u4ea7\u751f\u4e2d\u95f4\u8868\u7684\u65b9\u5f0f\u6267\u884c\uff1b
\u53c2\u6570=1\uff1agcluster\u76f4\u63a5\u8ba1\u7b97count\u503c\u3002<\/td><\/tr>
gcluster_crossjoin_use_hash_distribution<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u8bbe\u7f6e\u5f53JOIN\u4e24\u8fb9\u90fd\u4e0d\u662fhash\u5217\u65f6\uff0c\u662f\u5426\u4ecd\u5f3a\u5236\u8d70hash\u91cd\u5206\u5e03JOIN\u3002
\u53c2\u6570=0\uff1a\u8868\u793a\u5173\u95ed\uff0c\u5373\u5f53JOIN\u4e24\u8fb9\u90fd\u4e0d\u662fhash\u5217\u65f6\uff0c\u4e0d\u4f7f\u7528hash\u91cd\u5206\u5e03JOIN\u529f\u80fd
\u53c2\u6570=1\uff1a\u8868\u793a\u5f00\u542f\uff0c\u5373\u5f53JOIN\u4e24\u8fb9\u90fd\u4e0d\u662fhash\u5217\u65f6\uff0c\u4f7f\u7528hash\u91cd\u5206\u5e03JOIN\u529f\u80fd\u3002
\u8be5\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u662f1\u3002<\/td><\/tr>
gcluster_dblink_direct_data_exchange<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u53ea\u9488\u5bf9\u540c\u6784\u6570\u636e\u6e90\uff08gcluster\uff09\u65f6\u4f7f\u7528\uff0c\u7528\u6765\u63a7\u5236\u62c9\u6570\u636e\u7684\u65b9\u5f0f\uff0c\u6709\u4e24\u79cd\u65b9\u5f0f\u53ef\u4ee5\u9009\u62e9\u3002\u8be5\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u662f1\u3002
\u53c2\u6570=0\uff1a\uff08\u65b9\u5f0f2\uff09\u7f51\u5173\u901a\u8fc7JDBC\u67e5\u8be2\u8fdc\u7a0b\u7684\u96c6\u7fa4\uff0c\u5c06\u7ed3\u679c\u96c6\u8f6c\u6362\u4e3ainsertinto\u2026\u2026values\u2026\u2026\u7684\u8bed\u53e5\uff0c\u518d\u63d2\u5165\u5230\u672c\u5730\u7684\u96c6\u7fa4\uff0c\u4ece\u800c\u5b9e\u73b0\u6570\u636e\u8fc1\u79fb\u3002
\u53c2\u6570=1\uff1a\uff08\u65b9\u5f0f1\uff09\u76f4\u63a5\u7ed9\u8fdc\u7a0b\u7684gcluster\u53d1\u9001SELECT\u2026\u2026INTOSERVER\u2026\u2026\u7684\u547d\u4ee4\u6765\u62c9\u6570\u636e\uff0c\u4ece\u800c\u5b9e\u73b0\u6570\u636e\u8fc1\u79fb\u3002
\u5907\u6ce8\uff1a\u65b9\u5f0f1\u53ea\u9488\u5bf9\u672c\u5730\u96c6\u7fa4\u8282\u70b9\u548c\u8fdc\u7a0b\u96c6\u7fa4\u8282\u70b9\u4e4b\u95f4\u53ef\u4ee5\u4e92\u8054\u7684\u60c5\u51b5\uff0c\u5982\u679c\u4ed6\u4eec\u4e4b\u95f4\u4e0d\u80fd\u8fdb\u884c\u4e92\u8054\uff0c\u5219\u53ea\u80fd\u4f7f\u7528\u65b9\u5f0f2\u3002<\/td><\/tr>
gcluster_delayed_group<\/mark>_by_optimize<\/td>\u662f\u5426\u9488\u5bf9group\u5f00\u542f\u5ef6\u8fdf\u805a\u5408\uff0c\u9ed8\u8ba4\u503c0\uff0c \u4e0d\u5f00\u542f\u3002 \u8bbe\u7f6e\u4e3a1\u5f00\u59cb
\u5ef6\u8fdf\u805a\u5408\uff0c\u5c31\u662f\u4e0d\u5728\u672c\u5730\u505agroup\u540e\u518d\u53d1\u9001\u6570\u636e\uff0c\u800c\u662f\u76f4\u63a5\u53d1\u9001\u6570\u636e\u5230\u4e34\u65f6\u8868\uff0c\u5728\u4e34\u65f6\u8868\u505a\u6700\u540e\u7684\u805a\u5408\u3002
\u8be5\u53c2\u6570\u5bf9group\u5217\u4e0d\u5305\u542bhash\u5206\u5e03\u5217\u65f6\u624d\u6709\u6548\u3002
GBase 8a\u9488\u5bf9group\u5217\u552f\u4e00\u503c\u591a\u7684\u5ef6\u8fdf\u805a\u5408\u4f18\u5316\u53c2\u6570<\/a><\/td><\/tr>
gcluster_ddl_parallel_execute<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u63a7\u5236DDL\u5e76\u884c\u6216\u8005\u4e32\u884c\u6267\u884c\u3002
\u53c2\u6570=0\uff1a\u4e32\u884c\u6267\u884c\uff1b
\u53c2\u6570=1\uff1a\u5e76\u884c\u6267\u884c
\u8be5\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u662f0\u3002<\/td><\/tr>
gcluster_dql_statistic_threshold<\/td>\u67e5\u8be2SQL\u7684\u6027\u80fd\u76d1\u63a7\u529f\u80fd\u30020=\u5173\u95ed\uff0c\u5176\u5b83\u6570\u503c\u4e3a\u79d2\u6570\uff0c\u8d85\u8fc7\u8fd9\u4e2a\u79d2\u6570\u7684\u4f1a\u88ab\u8bb0\u5f55\u3002information_schema.SELECT_STATISTIC;sys_sqls;<\/td><\/tr>
gcluster_empty_result_set_optimize<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u8bbe\u7f6e\u662f\u5426\u542f\u7528\u7a7a\u7ed3\u679c\u96c6\u4f18\u5316\u529f\u80fd\u3002
\u53c2\u6570=0\u7981\u7528\u3002
\u53c2\u6570=1\u542f\u7528\u3002\u5982\u679c\u4f18\u5316\u9636\u6bb5\u53ef\u5224\u65ad\u7ed3\u679c\u96c6\u4e3a\u7a7a,\u5219\u76f4\u63a5\u8fd4\u56de\uff0c\u800c\u4e0d\u9700\u8981\u8ba9\u6267\u884c\u5668\u8fdb\u884c\u6267\u884c\u3002
\u8be5\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u662f1\u3002<\/td><\/tr>
gcluster_enable_mview<\/td>\u7269\u5316\u89c6\u56fe\u529f\u80fd\uff0c\u5c1a\u672a\u5b8c\u6210\u53d1\u5e03\u3002<\/td><\/tr>
gcluster_enable_serial_load<\/td>\u52a0\u8f7d\u53d7\u5230gcluster_serial_exec_query\u63a7\u5236\u3002\u9ed8\u8ba40\u4e0d\u53d7\u63a7\u5236\u3002<\/td><\/tr>
gcluster_engine_field_maxsize<\/td>\u5f53UP\u901a\u8fc7\u5f15\u64ce\u67e5\u8be2\uff0c\u83b7\u5f97\u7ed3\u679c\u65f6\uff0c\u5355\u5217\u6570\u636e\u7684\u6700\u5927\u957f\u5ea6\u3002\u6bd4\u5982\u4eceup\u67e5\u8be28t\u5f15\u64ce\u6570\u636e\u3002<\/td><\/tr>
gcluster_extend_ident<\/td>\u7528\u6765\u63a7\u5236\u662f\u5426\u53ef\u4ee5\u521b\u5efa\u4e2d\u6587\u8868\u540d\u5b57\u6bb5\u3001\u7279\u6b8a\u5b57\u7b26\u7684\u5b57\u6bb5\u3002
\u9ed8\u8ba4\u4e3a 0\uff0c0 \u8868\u793a\u4e0d\u5f00\u542f\uff0c\u4e3a 1 \u8868\u793a\u5f00\u542f\u3002
\u6ce8\uff1a\u6253\u5f00 gcluster_extend_ident \u53c2\u6570\u4e4b\u540e\uff0c\u7cfb\u7edf\u4ece\u539f\u6765\u7684\u53ea\u80fd\u521b\u5efa\u5b57\u6bcd
\u6570\u5b57\u4e0b\u5212\u7ebf\u547d\u540d\u65b9\u5f0f\uff0c\u6269\u5c55\u5230\u652f\u6301\u4e2d\u6587\u548c\u7279\u6b8a\u5b57\u7b26\uff0c\u4f46\u7279\u6b8a\u5b57\u7b26\u4e0d\u5305\u62ec
\"'\",\"\"\",\"\\\",\" . \"\u56db\u4e2a\u5b57\u7b26\u3002
\u4f8b\u5982\u521b\u5efa\u4e00\u4e2a\u5e26\u6709\u7279\u6b8a\u5b57\u7b26\u7684\u5e93\uff0c\u5c06\u4f1a\u62a5\u9519
create database t't;<\/td><\/tr>
gcluster_ha_event_monitor<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u662f\u5426\u63a7\u5236\u76d1\u542c\u5404\u4e2agnode\u7684\u72b6\u6001\uff0c\u4ee5\u4fbf\u63a7\u5236\u5f53\u524d\u6267\u884cSQL\u6765\u83b7\u5f97\u8be5\u72b6\u6001\u3002
\u53c2\u6570=0\u7981\u7528\u76d1\u542c
\u53c2\u6570=1\u542f\u7528\u76d1\u542c
\u8be5\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u662f1\u3002
\u9002\u7528\u9ad8\u53ef\u7528\u8282\u70b9\u72b6\u6001\u54cd\u5e94\u573a\u666f\uff1a
\u96c6\u7fa4\u67e5\u8be2\u8fc7\u7a0b\u4e2d\uff0c\u7531\u4e8e\u4e00\u4e9b\u539f\u56e0\u67d0\u4e9b\u8282\u70b9\u4f1a\u51fa\u73b0\u7531Online\u53d8\u4e3aOffline\u72b6\u6001\uff0c\u90a3\u4e48\u5bf9\u5e94\u8be5\u8282\u70b9\u7684\u67e5\u8be2\u5219\u5fc5\u987b\u505c\u6b62\u4e0b\u6765\uff0c\u6267\u884c\u5668\u5728\u6267\u884c\u8fc7\u7a0b\u4e2d\u4f1a\u63d0\u4f9b\u9ad8\u53ef\u7528\u8282\u70b9\u72b6\u6001\u54cd\u5e94\u529f\u80fd\uff0c\u4e00\u65e6\u8282\u70b9\u72b6\u6001\u53d8\u4e3a\u4e0d\u53ef\u7528\uff0c\u5219\u901a\u77e5\u4e0e\u4e4b\u76f8\u5173\u7684\u67e5\u8be2\uff0c\u5c06\u5176\u505c\u6b62\u4e0b\u6765\u3002<\/td><\/tr>
gcluster_ha_node_left_event_delay<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u68c0\u6d4b\u8282\u70b9\u79bb\u5f00\u7684\u95f4\u9694\u65f6\u95f4\uff0c\u4f8b\u5982t1\u65f6\u95f4\u68c0\u6d4b\u5230node\u79bb\u5f00\u4e86\uff0c\u7b49\u5f85\u4e86gcluster_ha_node_left_event_delay\u65f6\u95f4\u540e\uff0c\u68c0\u6d4b\u5230node\u4ecd\u7136\u662f\u79bb\u5f00\u72b6\u6001\uff0c\u5219\u8ba4\u4e3a\u8be5node\u662f\u771f\u6b63\u79bb\u5f00\u4e86\u3002\u5355\u4f4d\u662f\u6beb\u79d2\u3002
\u8be5\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u662f30000\u3002
\u9ed8\u8ba4\u503c\u6700\u5c0f\u503c\u6700\u5927\u503c
30000086400000000<\/td><\/tr>
gcluster_hash_join_complex_optimize<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u63a7\u5236\u662f\u5426\u5728\u5b50\u67e5\u8be2\u548c\u7236\u67e5\u8be2\u6ee1\u8db3hash\u5173\u7cfb\u7684\u4f18\u5316\u65f6\uff0c\u5f53\u4f5c\u4e00\u4e2a\u6574\u4f53\u90e8\u5206\u6765\u6267\u884c\u3002
\u53c2\u6570=0\u7981\u7528\uff0c\u6ee1\u8db3hash\u5173\u7cfb\u7684\u4f18\u5316\u65f6\uff0c\u4e0d\u5f53\u4f5c\u4e00\u4e2a\u6574\u4f53\u90e8\u5206\u6267\u884c\u3002
\u53c2\u6570=1\u542f\u7528\uff0c\u6ee1\u8db3hash\u5173\u7cfb\u7684\u4f18\u5316\u65f6\uff0c\u5f53\u4f5c\u4e00\u4e2a\u6574\u4f53\u90e8\u5206\u6267\u884c\u3002
\u8be5\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u662f1\u3002<\/td><\/tr>
gcluster_hash_redist_threshold_row<\/td>\u5f53\u8be5\u503c\u4e0d\u4e3a 0 \u65f6\uff0c\u82e5\u5c0f\u8868\u62c9\u8868\u7684\u6570\u636e\u884c\u6570\u5927\u4e8e\u8be5\u503c\uff0c\u8fdb\u884c HASH \u91cd\u5206\u5e03 JOIN\u3002
\u8be5\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u662f 0\u3002
\u914d\u5408 gcluster_hash_redistribute_join_optimizer\u4f7f\u7528<\/td><\/tr>
gcluster_hash_redistribute_groupby_optimize<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u63a7\u5236\u662f\u5426\u542f\u7528Hash\u91cd\u5206\u5e03\u7684GROUPBY\u6a21\u5f0f\u3002
\u53c2\u6570=0\u7981\u7528\u3002
\u53c2\u6570=1\u542f\u7528\u3002\u8fdb\u884c\u5206\u7ec4\uff08groupby\uff09\u8fd0\u7b97\u4e4b\u524d\uff0c\u5c06\u4f1a\u628a\u4e34\u65f6\u7ed3\u679c\u5229\u7528\u54c8\u5e0c\u7b97\u6cd5\u91cd\u5206\u5e03\u5230\u5404\u4e2a\u8fd0\u7b97\u8282\u70b9\uff0c\u518d\u7531\u5404\u4e2a\u8282\u70b9\u8fdb\u884c\u5206\u7ec4\u8fd0\u7b97\u3002\u7531\u4e8e\u6570\u636e\u5728\u5206\u5230
\u5404\u4e2a\u8282\u70b9\u4e4b\u524d\u5df2\u7ecf\u505a\u4e86\u54c8\u5e0c\uff0c\u56e0\u6b64\u4ea7\u751f\u7684\u7ed3\u679c\u76f4\u63a5\u6c47\u603b\u5373\u53ef\u5f97\u5230\u6700\u7ec8\u7ed3\u679c\uff0c\u4e0d\u518d\u9700\u8981\u7531\u6c47\u603b\u8282\u70b9\u518d\u505a\u4e00\u6b21\u5206\u7ec4\u3002
\u8be5\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u662f1\u3002
\u9700\u8981\u8bf4\u660e\u7684\u662f\uff1a\u5f53\u67e5\u8be2\u5305\u542bOLAP\u51fd\u6570\u3001ORDERBY\u3001LIMIT\u65f6\uff0c\u65e0\u6cd5\u4f7f\u7528\u672c\u53c2\u6570\u8fdb\u884c\u4f18\u5316\u3002<\/td><\/tr>
gcluster_hash_redistribute_join_optimize<\/td>\u662f\u5426\u542f\u7528Hash\u91cd\u5206\u5e03\u7684JOIN\u6a21\u5f0f\u3002\u9ed8\u8ba4\u503c\u662f1\u3002
\u53c2\u6570=0 \u62c9\u590d\u5236\u8868
\u53c2\u6570=1\u4e00\u76f4\u4f7f\u7528\u3002\u5728\u4e24\u4e2a\u5206\u5e03\u8868\u8fdb\u884c\u7b49\u503cJOIN\u8fd0\u7b97\u65f6\uff0c
\u5c06\u628a\u5176\u4e2d\u4e00\u4e2a\u8868\u7684\u6570\u636e\u6839\u636e\u8fde\u63a5\u6761\u4ef6\u5217\u7684\u503c\u8fdb\u884c\u54c8\u5e0c\u91cd\u5206\u5e03\u3002
\u7136\u540e\uff0c\u5229\u7528\u5404\u4e2a\u8fd0\u7b97\u8282\u70b9\u4e0a\u91cd\u5206\u5e03\u540e\u7684\u4e34\u65f6\u8868\u548c\u53e6\u4e00\u4e2a\u8fdb\u884cJOIN\u8fd0\u7b97\u3002
\u8fd9\u6837\uff0c\u5404\u8282\u70b9\u7684\u8fd0\u7b97\u7ed3\u679c\u76f4\u63a5\u6c47\u603b\u5373\u53ef\u5f97\u5230\u6700\u7ec8\u7ed3\u679c\u3002
\u8fd9\u79cd\u7b56\u7565\u53ef\u4ee5\u514d\u4e8e\u5c06\u5176\u4e2d\u4e00\u4e2a\u5206\u5e03\u8868\u5728\u6240\u6709\u8fd0\u7b97\u8282\u70b9\u4e0a\u62c9\u6210\u590d\u5236\u8868\uff0c\u800c\u662f\u6bcf\u4e2a\u8fd0\u7b97\u8282\u70b9\u53ea\u9700\u63a5\u6536\u8fd9\u4e2a\u8868\u7684\u4e00\u90e8\u5206\u6570\u636e\u3002
\u53c2\u6570=2\u7531\u89c4\u5219\u51b3\u5b9a\uff1a\u4e24\u8868\u7684\u5c3a\u5bf8\u76f8\u5dee\u4e0d\u8d85\u8fc720%\u65f6\uff0c\u4f7f\u7528\u54c8\u5e0c\u91cd\u5206\u5e03JOIN\uff1b\u5426\u5219\u4e0d\u4f7f\u7528\u3002
<\/td><\/tr>
gcluster_insert_singlegrouppart_optimize<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u8bbe\u7f6e\u662f\u5426\u628ainsertintoselect...\u7684\u6570\u636e\u63d2\u5165\u5230safegroup\u5355\u4e00\u5206\u7247\u4e2d\u3002
\u53c2\u6570=0\uff1a\u4e0d\u63d2\u5165\u5230safegroup\u5355\u4e00\u5206\u7247\u4e2d\uff1b
\u53c2\u6570=1\uff1a\u63d2\u5165\u5230safegroup\u5355\u4e00\u5206\u7247\u4e2d
\u8be5\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u662f0\u3002<\/td><\/tr>
gcluster_insertselect_use_values_optimize<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u8bbe\u7f6e\u662f\u5426\u628ainsertintoselect\u2026\u8f6c\u5316\u6210insertintovalues\u7684\u65b9\u5f0f\u3002
\u53c2\u6570=0\uff1a\u4e0d\u8f6c\u6362\uff1b
\u53c2\u6570=1\uff1a\u8f6c\u6362
\u8be5\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u662f0\u3002<\/td><\/tr>
gcluster_kafka_batch_commit_dml_count<\/td>\u8be5\u53c2\u6570\u7528\u6765\u914d\u7f6e\u6279\u91cf\u63d0\u4ea4\uff0c\u5355\u4f4d\u662f DML \u7684\u6761\u6570\u3002 \u5728\u5185\u5b58\u591f\u7528\u7684\u60c5\u51b5\u4e0b\uff0c\u6279\u91cf\u63d0\u4ea4\u80fd\u5927\u5e45\u63d0\u9ad8\u6548\u7387\u3002<\/td><\/tr>
gcluster_kafka_consume_batch<\/td>\u8be5\u53c2\u6570\u7528\u6765\u914d\u7f6e\u4e00\u6b21\u4ece kafka server \u53d6\u5f97\u591a\u5c11\u6d88\u606f\u3002 \u5982\u679c kakfa \u6d88\u606f\u4ee5\u5c0f\u4e8b\u52a1\u4e3a\u4e3b\uff0c\u90a3\u4e48\u53ef\u4ee5\u628a\u8fd9\u4e2a\u53c2\u6570\u914d\u7f6e\u5927\u4e00\u4e9b\uff0c\u76f8\u53cd\u5219\u914d\u5c0f\u4e00\u4e9b\u3002<\/td><\/tr>
gcluster_kafka_consumer_output_charset_name<\/td>\u8bbe\u7f6e kafka consumer \u53d1\u7ed9\u5355\u673a\u7684\u6570\u636e\u7684\u5b57\u7b26\u96c6\u3002\u7f3a\u7701\u4e3a\u7a7a\uff0c\u9002\u7528\u4e8e JSON
UTF8\uff0c8a UTF8 \u7684\u914d\u7f6e\uff1b\u8bbe\u4e3a UTF8 \u53ef\u4ee5\u517c\u5bb9 8a GBK \u6216 8a UTF8 \u4e24\u79cd\u60c5\u51b5\u3002
\u6ce8\uff1a\u8f93\u5165\u7684 JSON \u5fc5\u987b\u662f UTF8
<\/td><\/tr>
gcluster_kafka_data_buf_size<\/td>\u8bbe\u5b9a\u96c6\u7fa4\u4e3a\u6bcf\u4e2a consumer \u6700\u591a\u5206\u914d\u591a\u5927 buffer\uff0c\u8be5 buffer \u7528\u4e8e\u7f13\u5b58\u4e00\u6b21
\u63d0\u4ea4\u5305\u542b\u7684 insert \u6570\u636e\uff08\u4ece update \u62c6\u5206\u7684 insert \u4e5f\u5305\u542b\u5728\u5185\uff09\u3002
\u6ce8\uff1a\u6b64\u53c2\u6570\u4e00\u822c\u4e0d\u9700\u8981\u914d\u7f6e\uff0c\u5f53\u7528\u6237\u6709\u8d85\u5927\u4e8b\u52a1\u7684\u65f6\u5019\uff0c\u5982\u679c consumer
\u62a5\u9519\uff0c\u53ef\u4ee5\u6839\u636e\u9519\u8bef\u4fe1\u606f\u6765\u914d\u7f6e\u6b64\u53c2\u6570\u3002
\u9ed8\u8ba4\u503c \u6700\u5c0f\u503c \u6700\u5927\u503c
1.25GB 0 \u4e0d\u9650\u5236<\/td><\/tr>
gcluster_kafka_ignore_if_table_not_exist<\/td>\u5982\u679c\u540c\u6b65 8a \u5df2\u7ecf\u4e0d\u5b58\u5728\u7684\u8868\u7684\u6570\u636e\u65f6\uff0c\u53ef\u4ee5\u901a\u8fc7\u53c2\u6570\u63a7\u5236\u8fdb\u884c\u4e22\u5f03\uff0c\u5e76\u8bb0\u5f55\u65e5\u5fd7\u3002
\u9ed8\u8ba4\u503c\u4e3a 0\uff0c\u7b49\u4e8e 1 \u65f6\u4ee3\u8868\u540c\u6b65\u4e0d\u5b58\u5728\u7684\u8868\u65f6\u53ef\u4ee5\u5ffd\u7565\u4fe1\u606f\u5199\u5230express.log \u4e2d\u3002<\/td><\/tr>
gcluster_kafka_loader_max_start_count<\/td>\u63a7\u5236 loader \u578b consumer \u6700\u591a\u53ef\u4ee5\u542f\u52a8\u591a\u5c11\u4e2a\uff0c\u8d85\u8fc7\u8fd9\u4e2a\u6570\uff0cstart kafka
consumer \u547d\u4ee4\u5c06\u62a5\u9519\u3002
\u9ed8\u8ba4\u503c \u6700\u5c0f\u503c \u6700\u5927\u503c
20 1 100
<\/td><\/tr>
gcluster_kafka_local_queue_size<\/td>\u8be5\u53c2\u6570\u7528\u6765\u914d\u7f6econsumer\u672c\u5730\u7f13\u5b58\u961f\u5217\u7684\u957f\u5ea6\uff0c\u5355\u4f4d\u662fDML\u7684\u6761\u6570\u3002\u8bbe
\u8ba1\u91c7\u7528\u672c\u5730\u7f13\u5b58\u961f\u5217\u662f\u4e3a\u4e86\u5e73\u8861\u4ece kafka \u83b7\u53d6\u6d88\u606f\u548c\u63d0\u4ea4\u5230\u96c6\u7fa4\u8fd9\u4e24\u4e2a\u73af\u8282\u5728
\u6027\u80fd\u4e0a\u7684\u4e0d\u5339\u914d\uff0c\u4fdd\u8bc1\u6709\u8db3\u591f\u7684\u6570\u636e\u6267\u884c\u63d0\u4ea4\u3002<\/td><\/tr>
gcluster_kafka_max_message_size<\/td>\u8be5\u53c2\u6570\u7528\u6765\u914d\u7f6e consumer \u4ece kafka \u83b7\u53d6\u6d88\u606f\uff0c\u6700\u5927\u652f\u6301\u7684\u6d88\u606f\u5927\u5c0f\u3002
\u5355\u4f4d\u662f\u5b57\u8282\u3002\u914d\u7f6e\u8fd9\u4e2a\u53c2\u6570\u7684\u65f6\u5019\u9700\u8981\u6ce8\u610f\uff0cgolden gate \u751f\u6210\u6700\u5927\u6d88\u606f
\u7684\u5927\u5c0f\u662f\u53ef\u914d\u7f6e\u7684\uff0ckafka server \u80fd\u591f\u63a5\u6536\u7684\u6700\u5927\u6d88\u606f\u7684\u5927\u5c0f\u4e5f\u662f\u53ef\u914d\u7f6e\u7684\uff0c
consumer \u7684\u914d\u7f6e\u6700\u597d\u4e0e golden gate \u548c kafka \u4e00\u81f4\u3002<\/td><\/tr>
gcluster_kafka_parallel_commit<\/td>\u8be5\u53c2\u6570\u7528\u6765\u914d\u7f6e\u5e76\u884c\u63d0\u4ea4\uff0c\u63d0\u4ea4\u9636\u6bb5\u5206\u4e24\u6b65\uff0c\u7b2c\u4e00\u6b65 flush data \u5230\u5355\u673a\uff0c
\u7b2c\u4e8c\u6b65\u771f\u6b63\u63d0\u4ea4\uff0c\u5176\u4e2d\u7b2c\u4e00\u6b65\u53ef\u4ee5\u5e76\u884c\u6267\u884c\uff0c\u5e76\u884c\u5ea6\u9700\u8981\u6839\u636e CPU \u6838\u6570\u6765\u914d
\u7f6e\u3002<\/td><\/tr>
gcluster_kafka_primarykey_can_be_null<\/td>\u8bbe\u4e3a 1 \u8868\u793a\u5141\u8bb8 kafka \u6d88\u606f\u91cc\u7684\u4e3b\u952e value=null\u3002
\u9ed8\u8ba4\u503c \u6700\u5c0f\u503c \u6700\u5927\u503c
0 0 1<\/td><\/tr>
gcluster_kafka_result_check<\/td>consumer \u4f1a\u6839\u636e\u5f53\u524d\u8981\u63d0\u4ea4\u7684\u6570\u636e\u8ba1\u7b97\u9884\u671f\u5f71\u54cd\u884c\u6570\uff0c\u5e76\u4e0e\u5355\u673a\u8fd4\u56de\u7684\u5b9e
\u9645\u5f71\u54cd\u884c\u6570\u505a\u6bd4\u8f83\uff0c\u5982\u679c\u4e00\u81f4\u5219\u63d0\u4ea4\uff0c\u5426\u5219\u62a5\u9519\u4e0d\u63d0\u4ea4\u3002
\u9ed8\u8ba4\u503c \u6700\u5c0f\u503c \u6700\u5927\u503c
0 0 1<\/td><\/tr>
gcluster_load_rebalance_seed<\/td>\u52a0\u8f7dgnode\u9009\u70b9\u7684\u8d1f\u8f7d\u5747\u8861\u53c2\u6570\uff0c\u51cf\u5c11\u70ed\u70b9gnode\u7684\u51e0\u7387\u3002<\/td><\/tr>
gcluster_loader_max_data_processors<\/td>\u4e00\u6b21\u52a0\u8f7d\u4efb\u52a1\u4f7f\u7528\u7684\u6700\u5927\u52a0\u8f7d\u673a\u4e2a\u6570\uff0c\u9ed8\u8ba4\u503c16\u3002 \u8282\u70b9\u968f\u673a\u9009\u62e9\uff0c\u53c2\u8003gcluster_load_rebalance_seed<\/td><\/tr>
gcluster_loader_min_chunk_size<\/td>\u6570\u636e\u6587\u4ef6\u6700\u5c0f\u5206\u5757\u7c92\u5ea6\uff0c\u9ed8\u8ba467108864\u3002\u5355\u4f4d\u662f\u5b57\u8282\uff0cUINT_MAX \u53d6\u503c\u4e3a 4294967295\u3002<\/td><\/tr>
gcluster_lock_level<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u63a7\u5236GCluster\u4e0a\u9501\u7684\u5f00\u5173\u3002
\u53c2\u6570=0\u5168\u90e8\u90fd\u6253\u5f00\uff1b
\u53c2\u6570=1\u5168\u90e8\u5173\u95ed\uff1b
\u53c2\u6570=2\u53ea\u5173\u6389select\u7684\u9501\u3002
\u8be5\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u662f2\u3002<\/td><\/tr>
gcluster_lock_timeout<\/td>\u7b49\u5f85\u96c6\u7fa4\u9501\u7684\u8d85\u65f6\u53c2\u6570\u3002\u9ed8\u8ba40\u4e3a\u4e0d\u9650\u5236\u3002<\/td><\/tr>
gcluster_log_include_sql<\/td>\u96c6\u7fa4\u65e5\u5fd7\u91cc\u5305\u542b\u5177\u4f53SQL\u3002 \u5982\u56e0\u4e3a\u5b89\u5168\u539f\u56e0\uff0c\u53ef\u4ee5\u5173\u95ed\u3002<\/td><\/tr>
gcluster_max_conn_in_pool<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u63a7\u5236sql\u67e5\u8be2\u7684\u8fde\u63a5\u6c60\uff0c\u8bbe\u7f6e\u8fde\u63a5\u6c60\u4e2d\u5bf9\u76f8\u540cnode\u7684\u6700\u5927\u7684\u8fde\u63a5\u6570\u3002\u5982\u679c\u5f53\u524d\u8fde\u63a5\u6570\u8d85\u51fa\u4e0a\u9650\uff0c\u5f53\u524d\u8bf7\u6c42\u4f1a\u963b\u585e\u7b49\u5f85\u7a7a\u95f2\u7ebf\u7a0b\u7684\u51fa\u73b0\u3002\u6ce8\u610f\u6b64\u53c2\u6570\u503c\uff0c\u5fc5\u987b\u5c0f\u4e8egnode\u914d\u7f6e\u6587\u4ef6\u4e2dmax_connections\u7684\u503c\u3002\u5373gcluster_max_conn_in_pool<max_connections\u3002
\u8be5\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u662f300\u3002<\/td><\/tr>
gcluster_max_thread_in_pool<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u63a7\u5236\u96c6\u7fa4\u7ebf\u7a0b\u6570\u7684\u4e0a\u9650\uff0c\u5982\u679c\u5df2\u5230\u7ebf\u7a0b\u6570\u4e0a\u9650\uff0c\u672c\u8bf7\u6c42\u5219\u4f1a\u963b\u585e\u7b49\u5f85\u7a7a\u95f2\u7ebf\u7a0b\u7684\u51fa\u73b0\u3002
\u8be5\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u662f600\u3002
\u914d\u5408\u53c2\u6570gcluster_use_new_threadpool\u4e00\u8d77\u4f7f\u7528\uff0c\u5f53\u53c2\u6570gcluster_use_new_threadpool=1\u65f6\uff0c\u9700\u8981\u4f7f\u7528\u6b64\u53c2\u6570gcluster_max_thread_in_pool\u6765\u6307\u5b9a\u6700\u5927\u7ebf\u7a0b\u6570\u3002<\/td><\/tr>
gcluster_optimizer_gather_path_for_agg_compute<\/td>\u5e26limit\u7684group by\u8fd4\u56de\u5c11\u91cf\u7ed3\u679c\u6027\u80fd\u4f18\u5316\u3002<\/td><\/tr>
gcluster_order_by_limit_offset_optimize<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u4f18\u5316,\u5728SQL\u8bed\u53e5\u4e2d\u5e26\u6709ORDERBYLIMIT\uff0cOFFSET\u7684\u573a\u666f\u4e0b\u53ef\u4ee5\u8fdb\u884c\u4f18\u5316\uff0c\u542f\u7528\u53c2\u6570\u540e\uff0c\u9996\u5148\u4eceGNode\u4e2d\u53d6\u5f97\u9700\u8981\u7269\u5316\u7684\u5217\u53ca\u884c\u53f7\uff0c\u6700\u540e\u518d\u6839\u636e\u884c\u53f7\u8fdb\u884c\u7269\u5316\uff0c\u5c06\u6700\u7ec8\u7684\u5217\u8fd4\u56de\u3002
\u53c2\u6570=0\u5173\u95ed\uff1b
\u53c2\u6570=1\u542f\u7528\uff1b
\u8be5\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u662f0\u3002
\u4f7f\u7528\u573a\u666f\uff1a
\u5173\u95ed\u6b64\u53c2\u6570\u7684\u573a\u666f\uff1aselect\u90e8\u5206\u7684\u5217\u8f83\u5c11\uff0c\u5e76\u4e14offset\u7684\u503c\u4e5f\u8f83\u5c0f\uff0c\u5173\u95ed\u6b64\u53c2\u6570\u3002
\u5f00\u542f\u6b64\u53c2\u6570\u7684\u573a\u666f\uff1aselect\u90e8\u5206\u7684\u5217\u8f83\u591a\uff0c\u5e76\u4e14offset\u7684\u503c\u8f83\u5927\uff0c\u5f00\u542f\u6b64\u53c2\u6570\uff0c\u51cf\u5c11\u7269\u5316\u6210\u672c\u6765\u63d0\u5347\u67e5\u8be2\u6027\u80fd\u3002<\/td><\/tr>
gcluster_parallel_distribution_number<\/td>\u9ed8\u8ba4\u4e3a 0\uff0c\u4e3a\u4e0d\u63a7\u5236\uff0c\u6240\u6709\u4e3b\u5206\u7247\u7684\u6570\u636e\u5e76\u884c\u5206\u53d1; >0\uff0c\u8868\u793a\u6bcf\u4e2a\u8282\u70b9\u4e0a
\u540c\u65f6\u53ea\u80fd\u6709 n \u4e2a\u4e3b\u5206\u7247\u7684\u6570\u636e\u88ab\u5e76\u884c\u5206\u53d1\uff0c\u5373 SIS \u7684\u6570\u91cf\u3002<\/td><\/tr>
gcluster_query_retry<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u63a7\u5236\u662f\u5426\u542f\u7528\u67e5\u8be2\u91cd\u8bd5\u673a\u5236\u3002\u91cd\u8bd5\u673a\u5236\u662f\u6307\u5f53\u4e3b\u8282\u70b9\u4e0d\u5de5\u4f5c\u65f6\uff0c\u96c6\u7fa4\u5c06\u53d1\u9001\u67e5\u8be2\u7ed9\u5907\u4efd\u8282\u70b9\u3002\u9ed8\u8ba4\u662f\u4e0d\u542f\u7528\u3002
\u53c2\u6570=0\u5173\u95ed\uff1b
\u53c2\u6570=1\u542f\u52a8\uff1b
\u8be5\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u662f1\u3002
\u9002\u7528\u4e8e\u9ad8\u53ef\u7528\u5907\u4efd\u67e5\u8be2\u573a\u666f\uff1a
\u96c6\u7fa4\u67e5\u8be2\u4e2d\u67d0\u4e00\u6b65\u9aa4\uff0c\u7531\u4e8e\u8fde\u63a5\u7684\u8282\u70b9offline\u6216\u8005\u5176\u5b83\u4e00\u4e9b\u539f\u56e0\u67e5\u8be2\u5931\u8d25\uff0c\u90a3\u4e48\u6267\u884c\u5668\u4f1a\u5c06\u8be5\u67e5\u8be2\u7531\u4e3b\u8282\u70b9\u8f6c\u5230\u5907\u4efd\u8282\u70b9\u91cd\u65b0\u67e5\u8be2\uff0c\u4f46\u9ad8\u53ef\u7528\u5907\u4efd\u67e5
\u8be2\u7684\u524d\u63d0\u4e3a\u8be5\u67e5\u8be2\u6ca1\u6709\u8fdb\u5165\u7ed3\u679c\u5904\u7406\u9636\u6bb5\uff0c\u4e00\u65e6\u8fdb\u5165\u8be5\u9636\u6bb5\uff08\u4f8b\u5982\u5df2\u7ecf\u6709\u7ed3\u679c\u53d1\u9001\u5230\u5ba2\u6237\u7aef\uff09\uff0c\u5219\u4e0d\u4f1a\u542f\u52a8\u9ad8\u53ef\u7528\u5907\u4efd\u67e5\u8be2\uff0c\u800c\u76f4\u63a5\u67e5\u8be2\u62a5\u9519\u3002<\/td><\/tr>
gcluster_random_insert<\/td>\u7528\u4e8e\u63a7\u5236\u968f\u673a\u5206\u5e03\u8868\u5728\u6267\u884c insert value \u65f6\uff0c\u53d1\u8d77\u7684\u96c6\u7fa4\u8282\u70b9\u4e0a\u5b58\u5728\u5355\u673a\u8282\u70b9\uff0c\u6570\u636e\u5206\u5e03\u5230\u5355\u673a\u7684\u539f\u5219\u3002
0\uff1ainsert value \u6570\u636e\u90fd\u843d\u5728\u548c\u53d1\u8d77\u96c6\u7fa4\u8282\u70b9\u76f8\u540c\u7684\u5355\u673a\u8282\u70b9\u4e0a\uff1b
1\uff1ainsert value \u8fdb\u5165\u7684\u6bcf\u6761\u6570\u636e\uff0c\u91c7\u7528 random()%\u5206\u7247\u6570 \u539f\u5219\uff0c\u968f\u673a\u843d\u5728\u4efb\u610f\u5355\u673a\u8282\u70b9\u3002
\u6ce8\uff1a \u53d1\u8d77 coordinator \u8282\u70b9\u4e0a\u4e0d\u5b58\u5728 gnode \u8282\u70b9\u65f6\uff0c\u76ee\u524d\u6570\u636e\u5206\u5e03\u903b\u8f91
\u4e3a insert value \u8fdb\u5165\u7684\u6bcf\u6761\u6570\u636e\uff0c\u91c7\u7528 random()%\u5206\u7247\u6570 \u539f\u5219\uff0c\u968f\u673a\u843d\u5728\u4efb\u610f\u5355\u673a\u8282\u70b9\u3002<\/td><\/tr>
gcluster_rebalancing_concurrent_count<\/td>\u540c\u65f6\u6267\u884c\u91cd\u5206\u5e03\u8868\u7684\u4e2a\u6570\u3002\u592a\u9ad8\uff0c\u7cfb\u7edf\u8d44\u6e90\u5360\u7528\u4f1a\u9ad8\uff0c\u592a\u4f4e\uff0c\u8017\u65f6\u957f\u3002\u53ef\u968f\u65f6\u8c03\u8282\u3002<\/td><\/tr>
gcluster_rebalancing_immediate_recover_internal_table<\/td>0(OFF): rebalance \u64cd\u4f5c\u5904\u4e8e\u201cMove data to inter table\u201d\u72b6\u6001\u65f6\u4e0e
gcrecover \u6062\u590d rebalance \u4e2d\u95f4\u8868\u64cd\u4f5c\u4e92\u65a5\uff1b
1(ON): rebalance \u64cd\u4f5c\u5904\u4e8e
\u201cMove data to inter table\u201d\u72b6\u6001\u65f6\u4e0e gcrecover \u6062\u590d rebalance \u4e2d\u95f4\u8868\u64cd
\u4f5c\u53ef\u4ee5\u5e76\u53d1\uff1b<\/td><\/tr>
gcluster_rebalancing_parallel_degree<\/td>\u63a7\u5236 rebalance \u8868\u65f6\u5728 gnode \u4e0a\u6267\u884c SIS \u65f6\u4f7f\u7528\u7684 gbase_parallel_degree \u503c\u3002<\/td><\/tr>
gcluster_rebalancing_random_table_quick_mode<\/td>\u5bf9\u968f\u673a\u5206\u5e03\u8868\u505a\u5feb\u901f\u91cd\u5206\u5e03\uff0c\u4e5f\u5c31\u662f\u7ef4\u6301\u73b0\u6709\u6570\u636e\u5206\u5e03\u72b6\u6001\uff0c\u4e0d\u505a\u8fc1\u79fb\uff0c\u76f4\u63a5\u7248\u672c\u5207\u6362\u5230\u65b0\u7684\u3002\u5982\u679c\u662f\u56e0\u4e3a\u7a7a\u95f4\u5360\u7528\u592a\u9ad8\u539f\u56e0\u6269\u5bb9\uff0c\u6709\u5fc5\u8981\u5173\u95ed\u6b64\u53c2\u6570\uff0c\u4ee5\u4fbf\u5404\u4e2a\u8282\u70b9\u7684\u7a7a\u95f4\u5360\u7528\u5e73\u8861\u3002<\/td><\/tr>
gcluster_rebalancing_step<\/td>\u91cd\u5206\u5e03\u65f6\uff0c\u6bcf\u6b21\u8fc1\u79fb\u7684\u6570\u636e\u884c\u6570\u3002\u5f53\u8868\u975e\u5e38\u5927\u65f6\uff0c\u4e00\u6b21\u6027\u8fc1\u79fb\u6240\u6709\u6570\u636e\u4e0d\u4e00\u5b9a\u662f\u6700\u4f73\u65b9\u6848\uff0c\u672c\u53c2\u6570\u7ed9\u7528\u6237\u4e00\u4e2a\u53ef\u4ee5\u5206\u6bb5\u8fdb\u884c\u7684\u63a7\u5236\u3002<\/td><\/tr>
gcluster_rebalancing_update_status_on_drop_table<\/td>\u63a7\u5236\u5728\u505a rebalance \u65f6\uff0c\u5982\u679c\u6709 drop table \u662f\u5426\u66f4\u65b0gclusterdb.rebalancing_status \u8868
\u53c2\u6570\u503c\u4e3a 0\uff1a\u4e0d\u66f4\u65b0\uff0c \u53c2\u6570\u503c\u4e3a 1\uff1a\u66f4\u65b0<\/td><\/tr>
gcluster_reconn_times<\/td>\u56e0\u7f51\u7edc\u7b49\u5f02\u5e38\u539f\u56e0\u5bfc\u81f4gcluster\u4e0egcluster\u3001gcluster\u4e0egnode\u3001gnode\u4e0egnode\u4e4b\u95f4\u8fde\u63a5\u5931\u8d25\uff0c\u91cd\u8bd5\u7684\u6b21\u6570. \u6ce8\u610f\uff0c\u6700\u5c0f\u662f1\uff0c\u4e0d\u8981\u8bbe\u7f6e\u4e3a0\uff0c\u9664\u975e\u4f60\u4e0d\u7528\u5185\u90e8\u8fde\u63a5\u6c60gcluster_use_conn_pool\u3002<\/td><\/tr>
gcluster_send_client_data_timeout<\/td>\u96c6\u7fa4\u6267\u884c\u67e5\u8be2\u8bed\u53e5\u540e\uff0c\u5728\u5411\u5ba2\u6237\u7aef\u53d1\u9001\u67e5\u8be2\u7ed3\u679c\u96c6\u6570\u636e\u65f6\uff0c\u4e3a\u4e86\u9632\u6b62\u9677\u5165
\u65e0\u9650\u963b\u585e\uff0c\u5f71\u54cd kill \u547d\u4ee4\u7684\u6267\u884c\uff0c\u8bbe\u7f6e socket \u5199\u8d85\u65f6\uff0c\u5355\u4f4d\u4e3a\u79d2\u3002\u5f53\u8bbe\u7f6e\u4e3a
0 \u65f6\uff0c\u4e0d\u8bbe\u7f6e\u8d85\u65f6\uff0c\u53d1\u9001\u65e0\u9650\u7b49\u5f85\uff0c\u53ea\u6709\u53d1\u9001\u6210\u529f\u6216\u5931\u8d25\u624d\u8fd4\u56de\u3002
\u9ed8\u8ba4\u503c \u6700\u5c0f\u503c \u6700\u5927\u503c
30 0 100000
<\/td><\/tr>
gcluster_serial_exec_query<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u8bbe\u7f6eSQL\u6279\u91cf\u6267\u884c\u7684\u6570\u91cf,\u4e3b\u8981\u63a7\u5236\u5e76\u53d1\u65f6,\u4e0b\u53d1\u5230gnode\u7684SQL\u6570\u91cf\u3002\u53ef\u4f5c\u7528\u4e8e\u6700\u5c0f\u4f18\u5148\u7ea7\uff080\uff09\u548c\u4f4e\u4f18\u5148\u7ea7\uff081\uff09\u7684\u7528\u6237\u547d\u4ee4\u3002\u56e0\u4e3aroot\u548cgbase\u7528\u6237\u9ed8\u8ba4\u7684\u4f18\u5148\u7ea7\u522b\u4e3a2\uff0c\u6545\u5728\u4e0d\u4fee\u6539\u7528\u6237\u4f18\u5148\u7ea7\u7684\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u65e0\u6548\u3002
\u53c2\u6570=0\uff1a\u4e0d\u8fdb\u884c\u63a7\u5236,SQL\u5168\u90e8\u4e0b\u53d1\u5230gnode
\u53c2\u6570=\u5176\u4ed6\u503c\u8fdb\u884c\u63a7\u5236\uff1b
\u8be5\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u662f0\u3002
\u9ed8\u8ba4\u503c\u6700\u5c0f\u503c\u6700\u5927\u503c
0065536<\/td><\/tr>
gcluster_single_hash_node_optimize<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u63a7\u5236\u662f\u5426\u4f7f\u7528\u5355\u8282\u70b9\u6267\u884c\u67e5\u8be2\u3002\u7528\u4e8e\u5355\u8868\u7b49\u503chash\u67e5\u8be2\u6761\u4ef6\u7684\u4f18\u5316,\u5f53\u5355\u8868\u5305\u542bhash\u5217\u7684\u7b49\u503c\u6761\u4ef6\u65f6,\u8fdb\u884chash\u4f18\u5316,sql\u8bed\u53e5\u4ec5\u4ec5\u53d1\u9001\u7ed9\u5355\u4e2a\u8282\u70b9\u3002
\u53c2\u6570=0\u5173\u95ed\uff1b
\u53c2\u6570=1\u542f\u7528\uff1b
\u8be5\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u662f0\u3002<\/td><\/tr>
gcluster_support_binary<\/td>\u8be5\u53c2\u6570\u7528\u4e8e\u63a7\u5236\u662f\u5426\u751f\u6210 varbinary \u7684\u65b9\u5f0f\u3002
\u53d6\u503c 1\uff1a\u96c6\u7fa4\u53ef\u4ee5\u5efa\u51fa binary\/varbinary \u7c7b\u578b\u7684\u5217\uff1b
\u53d6\u503c 0 \uff1a\u96c6\u7fa4\u4e0d\u53ef\u4ee5\u5efa\u51fa binary\/varbinary \u7c7b\u578b\u7684\u5217\uff0c\u5efa\u51fa\u7684\u7c7b\u578b\u4e3a char
or varchar \u5206\u522b\u5bf9\u5e94 binary \u548c varbinary\uff1b<\/td><\/tr>
gcluster_support_hash_redist_combiner<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u63a7\u5236\uff0c\u5f53\u5b58\u5728ORDERBY\u6216LIMIT\u7684\u60c5\u51b5\u4e0b\uff0c\u662f\u5426\u5bf9GROUPBY\u505a\u52a8\u6001\u91cd\u5206\u5e03\u64cd\u4f5c\u3002
\u53c2\u6570=0\uff1a\u5173\u95ed\uff1b
\u53c2\u6570=1\uff1a\u5f00\u542f\uff1b
\u4f7f\u7528\u573a\u666f\uff1a
\u5173\u95ed\u6b64\u53c2\u6570\u7684\u573a\u666f\uff1a\u6c47\u603bGROUPBY\u7684\u4ee3\u4ef7\u8f83\u5c0f\uff0c\u5173\u95ed\u6b64\u53c2\u6570\uff0c\u4ee5\u907f\u514d\u4e3aORDERBY\u548cLIMIT\u4ea7\u751f\u989d\u5916\u7684\u6c47\u603b\u6b65\u9aa4\u3002
\u5f00\u542f\u6b64\u53c2\u6570\u7684\u573a\u666f\uff1a\u5f53\u5206\u5e03\u5f0f\u6267\u884cGROUPBY\u6027\u80fd\u660e\u663e\u4f18\u4e8e\u6c47\u603b\u6267\u884cGROUPBY\u65f6\uff0c\u5f00\u542f\u6b64\u53c2\u6570\uff0c\u4ee5\u63d0\u5347\u67e5\u8be2\u6027\u80fd\u3002
\u8be5\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u662f0\u3002<\/td><\/tr>
gcluster_union_optimize<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u8bbe\u7f6e\u662f\u5426\u4f7f\u7528union\u4f18\u5316\u3002\u4f7f\u7528union\u4f18\u5316\u65f6\uff0cunion\u4f18\u5316\u5c3d\u91cf\u628aunion\u8bed\u53e5\u53d1\u9001\u5230\u8282\u70b9\u6267\u884c\uff0c\u907f\u514d\u628a\u6240\u6709\u9700\u8981union\u7684\u8868\u90fd\u62c9\u6210\u590d\u5236\u8868\u3002\u5373\u5229\u7528union\u7684\u7ed3\u679c\u96c6\u53bb\u91cd\u7684\u7279\u6027\uff0c\u76f4\u63a5\u5c06union\u53d1\u9001\u5230\u4e0b\u5c42\u53bb\u6267\u884c\u3002\u8fd9\u6837\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u53ef\u4ee5\u5927\u5927\u51cf\u5c0f\u6c47\u603b\u7ed3\u70b9\u7684\u4e2d\u95f4\u7ed3\u679c\u96c6\u7684\u5927\u5c0f\u3002
\u53c2\u6570=0:\u4e0d\u4f7f\u7528union\u4f18\u5316
\u53c2\u6570=1:\u4f7f\u7528union\u4f18\u5316
\u8be5\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u662f0\u3002<\/td><\/tr>
gcluster_use_conn_pool<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u8bbe\u7f6e\u662f\u5426\u4f7f\u7528\u8fde\u63a5\u6c60\u8fdb\u884c\u6570\u636e\u5e93\u8fde\u63a5\u8bbf\u95ee\u3002
\u53c2\u6570=0:\u4e0d\u4f7f\u7528\u8fde\u63a5\u6c60\uff1b
\u53c2\u6570=1:\u4f7f\u7528\u8fde\u63a5\u6c60
\u8be5\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u662f1\u3002<\/td><\/tr>
gcluster_use_new_decimal<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u8bbe\u7f6e\u4f7f\u7528decimal\u7684\u65b9\u5f0f\u3002
\u53c2\u6570=0\uff1a\u7cbe\u5ea6\u4e3a18\uff1b
\u53c2\u6570=1\uff1a\u7cbe\u5ea6\u4e3a65\uff1b
\u8be5\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u662f1\u3002<\/td><\/tr>
gcluster_use_special_materialized_table<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u8bbe\u7f6e\u4f7f\u7528 into server \u6570\u636e\u4f20\u8f93\u7684\u76ee\u6807\u8868\u7684\u7c7b\u578b\u3002
\u53c2\u6570 = 0 \u7269\u7406\u8868\uff1b
\u53c2\u6570 = 1 \u7269\u5316\u8868\uff1b<\/td><\/tr>
gcluster_wait_query_cancel_timeout<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u8bbe\u7f6e\u5f53\u68c0\u6d4b\u5230\u67d0\u4e00\u4e2a\u8282\u70b9 left \u540e,\u7b49\u5f85\u5176\u4ed6\u8282\u70b9\u5b8c\u6210\u67e5\u8be2\u7684
\u8d85\u65f6\u65f6\u95f4\uff0c\u5355\u4f4d\u662f\u6beb\u79d2\u3002
\u8be5\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u662f 200\u3002<\/td><\/tr>
interactive_timeout<\/td>\u670d\u52a1\u5668\u5728\u5173\u95ed\u4ea4\u4e92\u8fde\u63a5\u4e4b\u524d\u7b49\u5f85\u6d3b\u52a8\u7684\u79d2\u6570\u3002 \u4ea4\u4e92\u8fd8\u662f\u975e\u4ea4\u4e92\uff0c\u53d6\u51b3\u4e0e\u8fde\u63a5\u65f6\u7684\u53c2\u6570\uff0c\u662f\u5426\u542f\u7528\u4e86 CLIENT_INTERACTIVE \u53c2\u6570\u3002\u9ed8\u8ba4\u7684gbase_real_connect\u662f\u975e\u4ea4\u4e92\u6a21\u5f0f\u3002<\/td><\/tr>
local_infile<\/td>\u652f\u6301\u672c\u5730\u6587\u4ef6\u52a0\u8f7d load data infile '\/opt\/XXX',\u5728\u96c6\u7fa4\u91cc\uff0c\u8be5\u53c2\u6570\u529f\u80fd\u662f\u7528\u8fc7load data infile 'file:\/\/\u7684\u65b9\u5f0f\u6765\u5b9e\u73b0\u7684\u3002<\/td><\/tr>
log_error<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u8bbe\u7f6e GBase 8a \u7684\u9519\u8bef\u65e5\u5fd7\u6587\u4ef6\u3002
\u8be5\u53c2\u6570\u7684\u9ed8\u8ba4\u8def\u5f84\u4e3a$GBASE_BASE\/log\/$GBASE_SID\/system.log\u3002<\/td><\/tr>
max_allowed_packet<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u63a7\u5236\u670d\u52a1\u5668\u548c\u5ba2\u6237\u7aef\u901a\u8baf\u65f6\uff0c\u53d1\u9001\u548c\u63a5\u6536\u7684\u6570\u636e\u5305\u6216\u5b57\u7b26\u4e32\u7684\u6700\u5927\u957f\u5ea6\u3002
\u4e00\u822c\u6570\u636e\u5305\u7684\u901a\u8baf\u7f13\u51b2\u533a\u521d\u59cb\u5316\u4e3a 8K \u5b57\u8282\u3002\u5f53\u4f20\u8f93\u7684\u6570\u636e\u5927\u4e8e 8K \u65f6\uff0c\u7f13\u51b2\u533a\u53ef\u4ee5\u81ea\u52a8\u589e\u957f\u5230 max_allowed_packet \u5b57\u8282\u3002
\u5982\u679c\u6211\u4eec\u9700\u8981\u4f7f\u7528 BLOB \u5217\u6216\u957f\u5b57\u7b26\u4e32\uff0c\u5219\u9700\u8981\u589e\u52a0\u8be5\u503c\u3002\u8fd9\u4e2a\u503c\u5e94\u540c\u6211\u4eec\u6700\u5927\u7684 BLOB \u957f\u5ea6\u6216\u5b57\u7b26\u4e32\u957f\u5ea6\u4e00\u6837\u5927\u3002
max_allowed_packet \u7684\u534f\u8bae\u9650\u5236\u4e3a 1GB\u3002\u9ed8\u8ba4\u503c\u4e3a 64M\u3002<\/td><\/tr>
max_connections<\/td>\u5141\u8bb8\u5ba2\u6237\u7aef\u7684\u6700\u5927\u8fde\u63a5\u6570\u3002\u8be5\u53c2\u6570\u9ed8\u8ba4\u503c\u662f10000<\/td><\/tr>
max_heap_table_size<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u8bbe\u7f6e MEMORY (HEAP)\u8868\u53ef\u4ee5\u589e\u957f\u5230\u7684\u6700\u5927\u7a7a\u95f4\u5927\u5c0f\u3002\u8be5\u53c2\u6570
\u7528\u6765\u8ba1\u7b97 MEMORY \u8868\u7684 MAX_ROWS \u503c\u3002
\u5728\u5df2\u6709\u7684 MEMORY \u8868\u4e0a\u8bbe\u7f6e\u8be5\u53c2\u6570\u6ca1\u6709\u6548\u679c\uff0c\u9664\u975e\u7528 CREATE TABLE \u6216
TRUNCATE TABLE \u7b49\u8bed\u53e5\u91cd\u65b0\u521b\u5efa\u8868\u3002
\u8be5\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u662f 1600000000\u3002<\/td><\/tr>
password_format_option<\/td>0-31 \u8303\u56f4
\u5176\u4e2d\u5bc6\u7801\u5b57\u7b26\u7ec4\u5408\u8981\u6c42\uff0c\u9ed8\u8ba4\u503c\u4e3a 0\uff0c\u8868 \u793a\u65e0\u590d\u6742\u5ea6\u8981\u6c42\u3002 \u7ec4\u5408\u4e2d\u53ef\u5305\u542b\u6570\u5b57\uff081\uff09\u3001\u5c0f\u5199\u5b57\u7b26\uff082\uff09\u3001 \u5927\u5199\u5b57\u7b26\uff084\uff09\u3001\u5176\u5b83\u5b57\u7b26\uff088\uff09\u4e2d\u7684 1 \u79cd \u6216\u591a\u79cd\u3002
1\uff1a\u8868\u793a\u5fc5\u987b\u5305\u542b\u6570\u5b57\u3002
2\uff1a\u8868\u793a\u5fc5\u987b\u5305\u542b\u5c0f\u5199\u5b57\u6bcd\u3002
4\uff1a\u8868\u793a\u5fc5\u987b\u5305\u542b\u5927\u5199\u5b57\u6bcd\u3002
8\uff1a\u8868\u793a\u5fc5\u987b\u5305\u542b\u5176\u5b83\u5b57\u7b26\u3002
16\uff1a\u8868\u793a\u4e0d\u80fd\u548c\u7528\u6237\u540d\u76f8\u540c\u3002
\u8981\u9650\u5b9a\u7ec4\u5408\u65f6\u914d\u7f6e\u4e3a\u4e0a\u8ff0\u503c\u7684\u548c\uff0c\u53ef\u4ee5\u4efb \u610f\u7ec4\u5408\u3002 \u4f8b \u5982 \uff1a \u9650 \u5b9a \u5305 \u542b \u6240 \u6709 \u79cd \u7c7b \u5b57 \u7b26 \u4e3a \uff081+2+4+8=15\uff09\u3002 \u5bf9\u975e\u82f1\u6587\u5b57\u7b26\uff0c\u6309\u5176\u5bf9\u5e94\u7684 ASII \u7801\u8303\u56f4\u5206\u7c7b\u3002<\/td><\/tr>
password_min_length<\/td>\u8868\u793a\u5bc6\u7801\u7684\u6700\u77ed\u957f\u5ea6\uff0c\u9ed8\u8ba4\u503c\u4e3a 0\uff0c\u8868\u793a\u4e0d\u9650\u5236
\u957f\u5ea6\uff0c\u6700\u592765535<\/td><\/tr>
password_reuse_max<\/td>\u9ed8\u8ba4\u503c\u4e3a 0\uff0c\u8868\u793a\u4e0d\u63a7\u5236\u3002\u6b63\u6570\u503c N \u8868\u793a\u5141\u8bb8
\u7684\u53e3\u4ee4\u95f4\u9694\uff0c\u95f4\u9694\u5927\u4e8e N \u624d\u5141\u8bb8\u8bbe\u7f6e\u3002<\/td><\/tr>
password_reuse_time<\/td>\u5bc6\u7801\u91cd\u590d\u4f7f\u7528\u65f6\u6700\u77ed\u95f4\u9694\u5929\u6570\u3002\u8d85\u8fc7\u4e86\u624d\u80fd\u91cd\u590d\u4f7f\u7528\u3002\u9ed8\u8ba40\u4e0d\u9650\u5236\u3002<\/td><\/tr>
pid<\/td>\u5f53\u524d\u8fde\u63a5\u670d\u52a1\u7684\u8fdb\u7a0b\u53f7\u3002 \u5c31\u662fps \u91cc\u770b\u5230\u7684pid\u53f7\u7801\u3002<\/td><\/tr>
pid_file<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u914d\u7f6e GBase 8a \u4fdd\u5b58\u8fdb\u7a0b ID \u6587\u4ef6\u7684\u64cd\u4f5c\u7cfb\u7edf\u8def\u5f84\u3002
\u9519\u8bef\u7684 pid \u6587\u4ef6\u4f1a\u5bfc\u81f4\u8282\u70b9\u7684 gcware \u4e0d\u80fd\u6b63\u5e38\u542f\u52a8\u6216\u505c\u6b62\u670d\u52a1\u3002\u5f53\u8282\u70b9\u7684
gcware \u542f\u52a8\u6216\u505c\u6b62\u5f02\u5e38\u65f6\uff0c\u53ef\u4ee5\u901a\u8fc7\u8fd9\u4e2a\u53c2\u6570\uff0c\u67e5\u770b\u76f8\u5e94\u7684 pid \u6587\u4ef6\u662f\u5426\u5b58\u5728\uff0c
\u5185\u5bb9\u662f\u5426\u6b63\u786e\u3002
\u8be5\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u4e3a$GBASE_BASE\/log\/$GBASE_SID\/gbased.pid<\/td><\/tr>
port<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u8bbe\u7f6e GBase 8a \u8282\u70b9\u673a\u5668\u901a\u8baf\u65f6\u6240\u4f7f\u7528\u7684\u7aef\u53e3\u53f7\u3002
\u8be5\u53c2\u6570\u7684\u503c\u4e3a\u5b89\u88c5 GBase 8a MPP Cluster \u65f6\uff0c\u6307\u5b9a\u7684\u8282\u70b9\u673a\u5668\u7684\u7aef\u53e3\u53f7\u3002
<\/td><\/tr>
profiling<\/td>\u6267\u884c\u8017\u65f6\u8ddf\u8e2a\u529f\u80fd\u3002\u9ed8\u8ba4\u5173\u95ed\u3002<\/td><\/tr>
profiling_history_size<\/td>\u6267\u884c\u8017\u65f6\u8ddf\u8e2a\u529f\u80fd\u7684\u5386\u53f2\u8bb0\u5f55\u957f\u5ea6\u3002\u9ed8\u8ba415\u4e2a\u3002<\/td><\/tr>
query_cache_limit<\/td>\u4e0d\u7f13\u51b2\u7ed3\u679c\u96c6\u8d85\u8fc7\u8fd9\u4e2a\u53c2\u6570\u7684SQL. \u9ed8\u8ba41M<\/td><\/tr>
query_cache_min_res_unit<\/td>\u67e5\u8be2\u7f13\u51b2\u5206\u914d\u7684\u6700\u5c0f\u5185\u5b58\u5757\u5927\u5c0f\uff0c\u9ed8\u8ba44K<\/td><\/tr>
query_cache_size<\/td>\u8bbe\u7f6e\u67e5\u8be2\u7ed3\u679c\u7f13\u5b58\u5927\u5c0f\uff0c\u9ed8\u8ba4\u503c\u662f 0M\u3002<\/td><\/tr>
query_cache_type<\/td>\u662f\u5426\u6253\u5f00SQL\u67e5\u8be2\u7ed3\u679c\u7f13\u51b2\u3002
0\uff1a\u5173\u95ed
1\uff1a\u7f13\u51b2\u9664\u4e86\u6307\u5b9a SQL_NO_CACHE\u7684\u6240\u6709SQL
2\uff1a\u53ea\u7f13\u51b2\u660e\u786e\u6307\u5b9a SQL_CACHE \u7684SQL<\/td><\/tr>
query_cache_wlock_invalidate<\/td>\u5f53\u8868\u6709\u8fde\u63a5WRITE\u9501\u65f6\uff0c\u9ed8\u8ba4\u5176\u5b83\u8fde\u63a5\u53ef\u4ee5\u8bfb\u53d6cache\u7684\u5185\u5bb9\u3002
\u5982\u679c\u4e3a1\uff0c\u5219\u5176\u5b83\u8fde\u63a5\u5c06\u7b49\u5f85\u9501\u7684\u91ca\u653e\uff0c\u624d\u80fd\u7ee7\u7eed\u3002<\/td><\/tr>
query_prealloc_size<\/td>\u7528\u4e8e\u8bed\u53e5\u89e3\u6790\u548c\u6267\u884c\u7684\u6301\u4e45\u7f13\u51b2\u533a\u7684\u5927\u5c0f\uff08\u4ee5\u5b57\u8282\u4e3a\u5355\u4f4d\uff09\u3002\u6b64\u7f13\u51b2\u533a\u4e0d\u5728\u8bed\u53e5\u4e4b\u95f4\u91ca\u653e\u3002\u5982\u679c\u8fd0\u884c\u590d\u6742\u7684\u67e5\u8be2\uff0c\u8f83\u5927\u7684 query_prealloc_size \u503c\u53ef\u80fd\u6709\u52a9\u4e8e\u63d0\u9ad8\u6027\u80fd\uff0c\u56e0\u4e3a\u5b83\u53ef\u4ee5\u51cf\u5c11\u670d\u52a1\u5668\u5728\u67e5\u8be2\u6267\u884c\u64cd\u4f5c\u671f\u95f4\u6267\u884c\u5185\u5b58\u5206\u914d\u6240\u9700\u7684\u9700\u6c42\u3002<\/td><\/tr>
rand_seed1<\/td>rand_seed1\u53d8\u91cfrand_seed2\u53d8\u91cf\u4ec5\u4f5c\u4e3a\u4f1a\u8bdd\u53d8\u91cf\u5b58\u5728\uff0c\u53ef\u4ee5\u8bbe\u7f6e\u4f46\u65e0\u6cd5\u8bfb\u53d6\u3002\u53d8\u91cf\uff08\u4f46\u4e0d\u662f\u5176\u503c\uff09\u663e\u793a\u5728 SHOW \u53d8\u91cf\u7684\u8f93\u51fa\u4e2d\u3002

\u8fd9\u4e9b\u53d8\u91cf\u7684\u76ee\u7684\u662f\u652f\u6301 RAND\uff08\uff09 \u51fd\u6570\u7684\u590d\u5236\u3002\u5bf9\u4e8e\u8c03\u7528 RAND\uff08\uff09\u7684\u8bed\u53e5\uff0c\u6e90\u5c06\u4e24\u4e2a\u503c\u4f20\u9012\u5230\u526f\u672c\uff0c\u7528\u4e8e\u4e3a\u968f\u673a\u6570\u751f\u6210\u5668\u8bbe\u5b9a\u79cd\u5b50\u3002\u526f\u672c\u4f7f\u7528\u8fd9\u4e9b\u503c\u8bbe\u7f6e\u4f1a\u8bdd\u53d8\u91cfrand_seed1 rand_seed2\uff0c\u4ee5\u4fbf\u526f\u672c\u4e0a\u7684 RAND\uff08\uff09 \u751f\u6210\u4e0e\u6e90\u4e0a\u76f8\u540c\u7684\u503c\u3002<\/td><\/tr>
rand_seed2<\/td>rand_seed1\u53d8\u91cfrand_seed2\u53d8\u91cf\u4ec5\u4f5c\u4e3a\u4f1a\u8bdd\u53d8\u91cf\u5b58\u5728\uff0c\u53ef\u4ee5\u8bbe\u7f6e\u4f46\u65e0\u6cd5\u8bfb\u53d6\u3002\u53d8\u91cf\uff08\u4f46\u4e0d\u662f\u5176\u503c\uff09\u663e\u793a\u5728 SHOW \u53d8\u91cf\u7684\u8f93\u51fa\u4e2d\u3002

\u8fd9\u4e9b\u53d8\u91cf\u7684\u76ee\u7684\u662f\u652f\u6301 RAND\uff08\uff09 \u51fd\u6570\u7684\u590d\u5236\u3002\u5bf9\u4e8e\u8c03\u7528 RAND\uff08\uff09\u7684\u8bed\u53e5\uff0c\u6e90\u5c06\u4e24\u4e2a\u503c\u4f20\u9012\u5230\u526f\u672c\uff0c\u7528\u4e8e\u4e3a\u968f\u673a\u6570\u751f\u6210\u5668\u8bbe\u5b9a\u79cd\u5b50\u3002\u526f\u672c\u4f7f\u7528\u8fd9\u4e9b\u503c\u8bbe\u7f6e\u4f1a\u8bdd\u53d8\u91cfrand_seed1 rand_seed2\uff0c\u4ee5\u4fbf\u526f\u672c\u4e0a\u7684 RAND\uff08\uff09 \u751f\u6210\u4e0e\u6e90\u4e0a\u76f8\u540c\u7684\u503c\u3002<\/td><\/tr>
range_alloc_block_size<\/td>\u8fdb\u884c\u8303\u56f4\u4f18\u5316\u65f6\u5206\u914d\u7684\u5757\u7684\u5927\u5c0f\uff08\u4ee5\u5b57\u8282\u4e3a\u5355\u4f4d\uff09\u3002<\/td><\/tr>
read_only<\/td>\u53ea\u8bfb\u3002\u672c\u53c2\u6570\u65e0\u6548\u3002<\/td><\/tr>
read_rnd_buffer_size<\/td>\u6b64\u53d8\u91cf\u7528\u4e8e\u4ece GsSys \u8868\u8bfb\u53d6\uff0c\u5bf9\u4e8e\u4efb\u4f55\u5b58\u50a8\u5f15\u64ce\uff0c\u7528\u4e8e\u591a\u8303\u56f4\u8bfb\u53d6\u4f18\u5316\u3002

\u5728\u952e\u6392\u5e8f\u64cd\u4f5c\u540e\u6309\u6392\u5e8f\u987a\u5e8f\u4ece GsSys \u8868\u4e2d\u8bfb\u53d6\u884c\u65f6\uff0c\u5c06\u901a\u8bfb\u6b64\u7f13\u51b2\u533a\u7684\u884c\uff0c\u4ee5\u907f\u514d\u78c1\u76d8\u67e5\u627e\u3002\u5c06\u53d8\u91cf\u8bbe\u7f6e\u4e3a\u5927\u503c\u53ef\u4ee5\u663e\u8457\u63d0\u9ad8 ORDER BY \u6027\u80fd\u3002\u4f46\u662f\uff0c\u8fd9\u662f\u5206\u914d\u7ed9\u6bcf\u4e2a\u5ba2\u6237\u7aef\u7684\u7f13\u51b2\u533a\uff0c\u56e0\u6b64\u4e0d\u5e94\u5c06\u5168\u5c40\u53d8\u91cf\u8bbe\u7f6e\u4e3a\u5927\u503c\u3002\u76f8\u53cd\uff0c\u8bf7\u4ec5\u4ece\u9700\u8981\u8fd0\u884c\u5927\u578b\u67e5\u8be2\u7684\u5ba2\u6237\u7aef\u4e2d\u66f4\u6539\u4f1a\u8bdd\u53d8\u91cf\u3002<\/td><\/tr>
secure_auth<\/td>0 \u53ef\u4ee5\u91c7\u752816\u4f4d\u7684\u5bc6\u7801\u7b56\u7565\u3002
1 \u5f3a\u5236\u4f7f\u7528\u65b0\u7684\u5bc6\u7801\u65b9\u6848sha1 41\u4f4d\u7b56\u7565\u3002Password\uff08\uff09
\u8be5\u53c2\u6570\u5df2\u7ecf\u53ef\u4ee5\u5e9f\u5f03\uff0c\u56e0\u4e3a\u9ed8\u8ba4\u7684\u90fd\u662f41\u4f4d\u4e86\uff08sha1\uff09\uff0c\u800c\u65b0\u7684\u652f\u6301sha256\u7248\u672c\u5c06\u4f7f\u752865\u4f4d\u3002\u5982\u679c\u5f3a\u884c\u5f00\u542f\u5fc5\u987b41\u4f4d\uff0c\u5c06\u5bfc\u81f4\u91c7\u7528sha256\u7684\u7528\u6237\u65e0\u6cd5\u767b\u5f55\u3002<\/td><\/tr>
secure_file_priv<\/td>\u65e0\u6548
\u6b64\u53d8\u91cf\u7528\u4e8e\u9650\u5236\u6570\u636e\u5bfc\u5165\u548c\u5bfc\u51fa\u64cd\u4f5c\u7684\u6548\u679c\uff0c\u4f8b\u5982\u7531 LOAD DATA \u548c SELECT \u6267\u884c\u7684\u64cd\u4f5c\u3002\u8fdb\u5165 OUTFILE \u8bed\u53e5\u548c LOAD_FILE\uff08\uff09 \u51fd\u6570\u3002\u8fd9\u4e9b\u64cd\u4f5c\u53ea\u5141\u8bb8\u5177\u6709 FILE \u6743\u9650\u7684\u7528\u6237\u4f7f\u7528\u3002

secure_file_priv\u53ef\u4ee5\u8bbe\u7f6e\u5982\u4e0b\uff1a

\u5982\u679c\u4e3a\u7a7a\uff0c\u5219\u53d8\u91cf\u4e0d\u8d77\u4f5c\u7528\u3002\u8fd9\u4e0d\u662f\u4e00\u4e2a\u5b89\u5168\u7684\u8bbe\u7f6e\u3002

\u5982\u679c\u8bbe\u7f6e\u4e3a\u76ee\u5f55\u7684\u540d\u79f0\uff0c\u670d\u52a1\u5668\u5c06\u5bfc\u5165\u548c\u5bfc\u51fa\u64cd\u4f5c\u9650\u5236\u4e3a\u4ec5\u5bf9\u8be5\u76ee\u5f55\u4e2d\u7684\u6587\u4ef6\u8fdb\u884c\u5904\u7406\u3002\u76ee\u5f55\u5fc5\u987b\u5b58\u5728;\u670d\u52a1\u5668\u4e0d\u521b\u5efa\u5b83\u3002

\u5982\u679c\u8bbe\u7f6e\u4e3a NULL\uff0c\u670d\u52a1\u5668\u5c06\u7981\u7528\u5bfc\u5165\u548c\u5bfc\u51fa\u64cd\u4f5c\u3002<\/td><\/tr>
socket<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u914d\u7f6e\u670d\u52a1\u5668\u901a\u8baf\u65f6\u6240\u4f7f\u7528\u7684 socket \u6587\u4ef6\u3002
\u8be5\u53c2\u6570\u7684\u9ed8\u8ba4\u503c\u901a\u5e38\u4e3a\/tmp\/gbase_8a_xxxx.sock\u3002\u5176\u4e2d xxxx\u4e3a\u5b89\u88c5 GBase
8a MPP Cluster \u65f6\u6240\u914d\u7f6e\u7684\u8282\u70b9\u673a\u5668\u7684\u7aef\u53e3\u53f7\u3002
<\/td><\/tr>
storage_engine<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u8bbe\u7f6e\u8868\u7684\u9ed8\u8ba4\u5b58\u50a8\u5f15\u64ce\u3002
GBase 8a MPP Cluster \u4f7f\u7528\u5b58\u50a8\u5f15\u64ce\u662f EXPRESS \u5f15\u64ce\u3002
\u7528\u6237\u4e0d\u53ef\u4ee5\u4fee\u6539\u8fd9\u4e2a\u53c2\u6570\u7684\u503c\u3002\u9519\u8bef\u7684\u5b58\u50a8\u5f15\u64ce\u8bbe\u7f6e\uff0c\u5c06\u5bfc\u81f4\u6570\u636e\u5e93\u4e0d\u80fd
\u6b63\u5e38\u5de5\u4f5c\u3002<\/td><\/tr>
table_definition_cache<\/td>\u7f13\u51b2\u7684\u8868\u5b9a\u4e49\u7f13\u51b2\u6570\u91cf\u3002<\/td><\/tr>
table_open_cache<\/td>\u540c\u65f6\u6253\u5f00\u7684\u8868\u7684\u6587\u4ef6\u63cf\u8ff0\u7b26\u7f13\u51b2\u6570\u91cf\u3002\u4e0e\u64cd\u4f5c\u7cfb\u7edfopen_files\u6709\u5173\u3002<\/td><\/tr>
thread_cache_size<\/td>\u8fd9\u4e2a\u53c2\u6570\u7684\u503c\u8868\u793a\u53ef\u4ee5\u91cd\u65b0\u5229\u7528\u4fdd\u5b58\u5728\u7f13\u5b58\u4e2d\u7ebf\u7a0b\u7684\u6570\u91cf,\u5f53\u65ad\u5f00\u8fde\u63a5\u65f6\u5982\u679c\u7f13\u5b58\u4e2d\u8fd8\u6709\u7a7a\u95f4,\u90a3\u4e48\u5ba2\u6237\u7aef\u7684\u7ebf\u7a0b\u5c06\u88ab\u653e\u5230\u7f13\u5b58\u4e2d,\u5982\u679c\u7ebf\u7a0b\u91cd\u65b0\u88ab\u8bf7\u6c42\uff0c\u90a3\u4e48\u8bf7\u6c42\u5c06\u4ece\u7f13\u5b58\u4e2d\u8bfb\u53d6,\u5982\u679c\u7f13\u5b58\u4e2d\u662f\u7a7a\u7684\u6216\u8005\u662f\u65b0\u7684\u8bf7\u6c42\uff0c\u90a3\u4e48\u8fd9\u4e2a\u7ebf\u7a0b\u5c06\u88ab\u91cd\u65b0\u521b\u5efa,\u5982\u679c\u6709\u5f88\u591a\u65b0\u7684\u7ebf\u7a0b\uff0c\u589e\u52a0\u8fd9\u4e2a\u503c\u53ef\u4ee5\u6539\u5584\u7cfb\u7edf\u6027\u80fd\u3002\u8fd9\u4e2a\u53c2\u6570\u9ed8\u8ba4\u503c\u662f0<\/td><\/tr>
thread_handling<\/td>\u63a7\u5236\u4f7f\u7528\u7ebf\u7a0b\u6c60\u65b9\u5f0f\u8fd8\u662f\u4e3a\u6bcf\u4e2a\u8fde\u63a5\u5efa\u7acb\u4e13\u7528\u7ebf\u7a0b
pool-of-threads\uff1a\u7ebf\u7a0b\u6c60\u65b9\u5f0f
one-thread-per-connection\uff1a\u6bcf\u4e2a\u8fde\u63a5\u4e00\u4e2a\u7ebf\u7a0b(\u9ed8\u8ba4)
\u7ebf\u7a0b\u6c60\u65b9\u5f0f\u521d\u59cb\u5316\u4e00\u5b9a\u6570\u91cf\u7684\u5de5\u4f5c\u7ebf\u7a0b\u5904\u7406\u5ba2\u6237\u7aef\u8bf7\u6c42\uff0c\u5f53\u5de5\u4f5c\u7ebf\u7a0b\u6570\u4e0d\u8db3\u65f6\u52a8\u6001\u521b\u5efa\uff0c\u6267\u884c\u8bf7\u6c42(\u547d\u4ee4\u5b57)\u540e\u7ebf\u7a0b\u9000\u51fa\u3002<\/td><\/tr>
thread_pool_size<\/td>\u521d\u59cb\u5316\u7ebf\u7a0b\u7684\u6570\u91cf,\u4e0ethread-handling\u914d\u5408\u4f7f\u7528<\/td><\/tr>
thread_stack<\/td>\u7ebf\u7a0b\u5806\u6808\u3002\u5efa\u8bae\u8bbe\u7f6e1-4M\u3002<\/td><\/tr>
time_format<\/td>\u65e5\u671f\u683c\u5f0f<\/td><\/tr>
time_zone<\/td>\u8fd9\u4e2a\u53c2\u6570\u8bbe\u7f6e\u9ed8\u8ba4\u7684\u670d\u52a1\u5668\u65f6\u533a\u3002
\u8be5\u53c2\u6570\u7528\u4e8e\u8bbe\u7f6e\u5168\u5c40 time_zone \u7cfb\u7edf\u53d8\u91cf\u3002\u5982\u679c\u672a\u7ed9\u51fa\u8be5\u9009\u9879\uff0c\u9ed8\u8ba4\u65f6\u533a
\u4e3a\u683c\u6797\u5a01\u6cbb\u65f6\u95f4\u3002
\u901a\u5e38\u8be5\u53c2\u6570\u7684\u503c\uff0c\u8981\u6c42\u4e0e\u64cd\u4f5c\u7cfb\u7edf\u7684\u65f6\u533a\u8bbe\u7f6e\u503c\u4e00\u81f4\u3002\u9519\u8bef\u7684\u65f6\u533a\u8bbe\u7f6e\u53ef
\u80fd\u5bfc\u81f4\u6570\u636e\u5e93\u7684\u65f6\u95f4\u51fd\u6570\u8fd4\u56de\u7ed3\u679c\u4e0d\u6b63\u5e38\u3002
\u5bf9\u4e8e\u4e2d\u56fd\u5730\u533a\u7684\u5ba2\u6237\uff0c\u901a\u5e38\u4f7f\u7528\u5317\u4eac\u65f6\u95f4\uff0c\u56e0\u6b64\u8be5\u53c2\u6570\u503c\u8bbe\u7f6e\u4e3a'+8:00'\u3002<\/td><\/tr>
timestamp<\/td>\u5f53\u524d\u65f6\u95f4\u6233\u3002\u53ef\u4ee5\u4fee\u6539\uff0cDEFAULT\u4f1a\u6062\u590d\u5230unix_tiemstamp\u7684\u503c\u3002<\/td><\/tr>
tmp_table_size<\/td>\u6700\u5927\u7684\u80fd\u653e\u5728\u5185\u5b58\u7684\u4e34\u65f6\u8868\u7684\u5927\u5c0f\u3002 \u5b9e\u9645\u4f7f\u7528\u4e2d\u4e0d\u80fd\u8d85\u8fc7 tmp_table_size\u548c max_heap_table_size\u3002<\/td><\/tr>
tmpdir<\/td>\u4e34\u65f6\u6587\u4ef6\u76ee\u5f55\u3002\u6bd4\u5982\u670d\u52a1\u5668\u7aef\u6e38\u6807\u4e34\u65f6\u8868\u3002<\/td><\/tr>
tx_isolation<\/td>\u4e8b\u52a1\u7c7b\u578b<\/td><\/tr>
unique_checks<\/td>\u5f03\u7528<\/td><\/tr>
version<\/td>\u7248\u672c\u4fe1\u606f<\/td><\/tr>
version_comment<\/td>\u7248\u672c\u6ce8\u91ca\u4fe1\u606f<\/td><\/tr>
version_compile_machine<\/td>\u670d\u52a1\u5668\u7684\u4e8c\u8fdb\u5236\u7c7b\u578b\u3002<\/td><\/tr>
version_compile_os<\/td>\u7f16\u8bd1Build\u7684\u64cd\u4f5c\u7cfb\u7edf\u7c7b\u578b<\/td><\/tr>
wait_timeout<\/td>\u670d\u52a1\u5668\u5728\u5173\u95ed\u975e\u4ea4\u4e92\u5f0f\u8fde\u63a5\u4e4b\u524d\u7b49\u5f85\u6d3b\u52a8\u7684\u79d2\u6570\u3002\u4e5f\u5c31\u662fsession\u7684Sleep\u7a7a\u95f2\u7b49\u5f85\u65f6\u95f4\u3002
\u4ea4\u4e92\u8fd8\u662f\u975e\u4ea4\u4e92\uff0c\u53d6\u51b3\u4e0e\u8fde\u63a5\u65f6\u7684\u53c2\u6570\uff0c\u662f\u5426\u542f\u7528\u4e86 CLIENT_INTERACTIVE \u53c2\u6570\u3002\u9ed8\u8ba4\u7684gbase_real_connect\u662f\u975e\u4ea4\u4e92\u6a21\u5f0f\u3002<\/td><\/tr>
warning_count<\/td>\u6700\u540e\u4e00\u4e2aStatement\u8fd4\u56de\u7684\u9519\u8bef\uff0c\u8b66\u544a\u4fe1\u606f\u6570\u91cf\u3002\u53ea\u8bfb\u3002<\/td><\/tr>
core-file<\/td>\u8fd9\u4e2a\u53c2\u6570\u7528\u4e8e\u63a7\u5236\u5728 GBase 8a \u5b95\u673a\u65f6\uff0c\u662f\u5426\u751f\u6210 core-dump \u6587\u4ef6\u3002
core-file \u662f\u4e00\u4e2a\u65e0\u503c\u53c2\u6570\u3002
\u5f53\u5728\u53c2\u6570\u6587\u4ef6\u4e2d\u51fa\u73b0\u8fd9\u4e2a\u53c2\u6570\u65f6\uff0cGBase 8a \u670d\u52a1\u5728\u5b95\u673a\u540e\uff0c\u4f1a\u751f\u6210
core-dump \u6587\u4ef6\u3002
GBase 8a \u9ed8\u8ba4\u4e0d\u542f\u7528\u8be5\u53c2\u6570\u3002<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

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