where segment_id=\u5206\u7247\u53f7<\/code><\/pre>\n\n\n\n\u5176\u4e2d\u5206\u7247\u53f7\uff0c\u4ece1\u5f00\u59cb\uff0c\u8be6\u7ec6\u53ef\u4ee5\u770bgcadmin showdistribution\u7684\u8f93\u51fa<\/p>\n\n\n\n
[gbase@gbase_rh7_003 ~]$ gcadmin showdistribution\n\n Distribution ID: 2 | State: new | Total segment num: 4\n\n Primary Segment Node IP Segment ID Duplicate Segment node IP\n========================================================================================================================\n| 10.0.2.103 | 1 | 10.0.2.104 |\n------------------------------------------------------------------------------------------------------------------------\n| 10.0.2.104 | 2 | 10.0.2.105 |\n------------------------------------------------------------------------------------------------------------------------\n| 10.0.2.105 | 3 | 10.0.2.106 |\n------------------------------------------------------------------------------------------------------------------------\n| 10.0.2.106 | 4 | 10.0.2.103 |\n========================================================================================================================\n<\/code><\/pre>\n\n\n\n<\/span>\u6837\u4f8b<\/span><\/h2>\n\n\n\n<\/span>\u73af\u5883<\/span><\/h3>\n\n\n\n4\u5206\u7247\u96c6\u7fa4\u3002<\/p>\n\n\n\n
[gbase@gbase_rh7_003 ~]$ gcadmin\nCLUSTER STATE: ACTIVE\nVIRTUAL CLUSTER MODE: NORMAL\n\n====================================\n| GBASE GCWARE CLUSTER INFORMATION |\n====================================\n| NodeName | IpAddress | gcware |\n------------------------------------\n| gcware1 | 10.0.2.103 | OPEN |\n------------------------------------\n====================================================\n| GBASE COORDINATOR CLUSTER INFORMATION |\n====================================================\n| NodeName | IpAddress | gcluster | DataState |\n----------------------------------------------------\n| coordinator1 | 10.0.2.103 | OPEN | 0 |\n----------------------------------------------------\n=========================================================================================================\n| GBASE DATA CLUSTER INFORMATION |\n=========================================================================================================\n| NodeName | IpAddress | DistributionId | gnode | syncserver | DataState |\n---------------------------------------------------------------------------------------------------------\n| node1 | 10.0.2.103 | 2 | OPEN | OPEN | 0 |\n---------------------------------------------------------------------------------------------------------\n| node2 | 10.0.2.104 | 2 | OPEN | OPEN | 0 |\n---------------------------------------------------------------------------------------------------------\n| node3 | 10.0.2.105 | 2 | OPEN | OPEN | 0 |\n---------------------------------------------------------------------------------------------------------\n| node4 | 10.0.2.106 | 2 | OPEN | OPEN | 0 |\n---------------------------------------------------------------------------------------------------------\n<\/code><\/pre>\n\n\n\n<\/span>\u8bbe\u7f6e\u53c2\u6570<\/span><\/h3>\n\n\n\n\u672c\u4f8b\u8bbe\u7f6esession\u7ea7\u522b\uff0c\u53ea\u5bf9\u5f53\u524d\u8fde\u63a5\u6709\u6548\u3002<\/p>\n\n\n\n
gbase> show variables like '%seg%';\n+-------------------------------------------------+------------+\n| Variable_name | Value |\n+-------------------------------------------------+------------+\n| _gbase_segment_size | 2147483648 |\n| _t_gcluster_single_segment_cluster_optimization | 0 |\n| gcluster_segment_id_replace | 0 |\n+-------------------------------------------------+------------+\n3 rows in set (Elapsed: 00:00:00.00)\n\ngbase> set gcluster_segment_id_replace=1;\nQuery OK, 0 rows affected (Elapsed: 00:00:00.00)<\/code><\/pre>\n\n\n\n<\/span>\u6570\u636e<\/span><\/h2>\n\n\n\n16\u884c\u6570\u636e\u7684hash\u5206\u5e03\u8868<\/p>\n\n\n\n
gbase> select count(*) from t1;\n+----------+\n| count(*) |\n+----------+\n| 16 |\n+----------+\n1 row in set (Elapsed: 00:00:00.08)\n\ngbase> show create table t1;\n+-------+----------------------------------------------------------------------------------------------------------------------------------------+\n| Table | Create Table |\n+-------+----------------------------------------------------------------------------------------------------------------------------------------+\n| t1 | CREATE TABLE \"t1\" (\n \"id\" int(11) DEFAULT NULL\n) ENGINE=EXPRESS DISTRIBUTED BY('id') DEFAULT CHARSET=utf8 TABLESPACE='sys_tablespace' |\n+-------+----------------------------------------------------------------------------------------------------------------------------------------+\n1 row in set (Elapsed: 00:00:00.00)<\/code><\/pre>\n\n\n\n<\/span>\u67e5\u8be2\u5206\u7247<\/span><\/h3>\n\n\n\n\u901a\u8fc7segment_id\u57284\u4e2a\u5206\u7247\u91cc\u67e5\u8be2\u3002\u6ce8\u610f\u5206\u7247\u53f7\u4e0d\u8fdb\u884c\u6821\u9a8c\uff0c\u5982\u4e0d\u5b58\u5728\u5219\u8fd4\u56de\u7a7a\u3002<\/p>\n\n\n\n
gbase> select * from t1 where segment_id=1;\n+------+\n| id |\n+------+\n| 4 |\n| 7 |\n| 6 |\n| 12 |\n| 10 |\n| 16 |\n| 11 |\n+------+\n7 rows in set (Elapsed: 00:00:00.01)\n\ngbase> select * from t1 where segment_id=2;\n+------+\n| id |\n+------+\n| 8 |\n+------+\n1 row in set (Elapsed: 00:00:00.01)\n\ngbase> select * from t1 where segment_id=3;\n+------+\n| id |\n+------+\n| 1 |\n| 9 |\n| 13 |\n+------+\n3 rows in set (Elapsed: 00:00:00.01)\n\ngbase> select * from t1 where segment_id=4;\n+------+\n| id |\n+------+\n| 2 |\n| 15 |\n| 3 |\n| 5 |\n| 14 |\n+------+\n5 rows in set (Elapsed: 00:00:00.01)\n\ngbase> select * from t1 where segment_id=5;\nEmpty set (Elapsed: 00:00:00.01)\n\ngbase> select * from t1 where segment_id=6;\nEmpty set (Elapsed: 00:00:00.01)\n<\/code><\/pre>\n\n\n\n<\/span>\u5728\u67e5\u8be2\u7ed3\u679c\u91cc\u5305\u542b\u5206\u7247<\/span><\/h3>\n\n\n\n\u5728select \u91cc\u5305\u542b\u5206\u7247\u53f7\uff0c\u6bd4\u5982<\/p>\n\n\n\n
gbase> select segment_id,t1.* from t1;\n+------------+------+\n| segment_id | id |\n+------------+------+\n| 1 | 4 |\n| 1 | 7 |\n| 1 | 6 |\n| 1 | 12 |\n| 1 | 10 |\n| 1 | 16 |\n| 1 | 11 |\n| 4 | 2 |\n| 4 | 15 |\n| 4 | 3 |\n| 4 | 5 |\n| 4 | 14 |\n| 3 | 1 |\n| 3 | 9 |\n| 3 | 13 |\n| 2 | 8 |\n+------------+------+\n16 rows in set (Elapsed: 00:00:00.02)\n<\/code><\/pre>\n\n\n\n<\/span>\u591a\u8868\u65f6\uff0c\u6307\u5b9a\u8868\u540d\u5b57<\/span><\/h3>\n\n\n\ngbase> select segment_id(t1),segment_id(t2),t1.* from t1,t2 where t1.id=t2.id;\n+------------+------------+------+\n| segment_id | segment_id | id |\n+------------+------------+------+\n| 1 | 1 | 4 |\n| 4 | 1 | 2 |\n| 4 | 1 | 3 |\n| 3 | 1 | 1 |\n+------------+------------+------+\n4 rows in set (Elapsed: 00:00:00.06)\n<\/code><\/pre>\n\n\n\n<\/span>\u7edf\u8ba1\u5404\u4e2a\u5206\u7247\u7684\u6570\u636e\u91cf<\/span><\/h3>\n\n\n\n\u6ce8\u610f\uff0c\u6b64\u5904\u8fd4\u56de\u7684\u662f\u6b63\u5e38\u5206\u7247\u7684\u6570\u636e\uff0c\u7528\u4e8e\u6392\u67e5\u6570\u636e\u503e\u659c\u5f88\u6709\u7528\u5904\u3002<\/p>\n\n\n\n
gbase> select segment_id,count(*) from t1 group by segment_id;\n+------------+----------+\n| segment_id | count(*) |\n+------------+----------+\n| 4 | 5 |\n| 1 | 7 |\n| 2 | 1 |\n| 3 | 3 |\n+------------+----------+\n4 rows in set (Elapsed: 00:00:00.17)\n<\/code><\/pre>\n\n\n\n<\/p>","protected":false},"excerpt":{"rendered":"
\u5357\u5927\u901a\u7528GBase 8a \u6570\u636e\u5e93\u96c6\u7fa4\uff0c\u5c06\u6570\u636e\u6309\u7167\u7528\u6237\u6307\u5b9a\u7684\u5206\u5e03\u683c\u5f0f\u5207\u5206\uff0c\u4fdd\u5b58\u5728\u591a\u53f0\u6570\u636e\u8ba1\u7b97\u8282\u70b9\u4e0a\u3002\u672c\u6587\u4ecb\u7ecd\u5728\u65b0\u72489.5.3\u7248\u672c\u91cc\uff0c\u5982\u679c\u901a\u8fc7segment_id\u76f4\u63a5\u67e5\u8be2\u67d0\u4e9b\u8ba1\u7b97\u8282\u70b9\u7684\u6570\u636e\u3002<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,6],"tags":[74,60],"class_list":{"0":"post-5190","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"hentry","6":"category-gbase8a","8":"tag-74","9":"tag-v95"},"_links":{"self":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/5190","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/comments?post=5190"}],"version-history":[{"count":9,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/5190\/revisions"}],"predecessor-version":[{"id":5353,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/posts\/5190\/revisions\/5353"}],"wp:attachment":[{"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/media?parent=5190"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/categories?post=5190"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.gbase8.cn\/en\/wp-json\/wp\/v2\/tags?post=5190"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}