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0c79de2419
Tasks:-
Changes in wsrep_dirty_reads variable
1.) Global + Session scope (Current: session-only)
2.) Can be set using command line.
3.) Allow all commands that do not change data (besides SELECT)
4.) Allow prepared Statements that do not change data
5.) Works with wsrep_sync_wait enabled
122 lines
3.1 KiB
Text
122 lines
3.1 KiB
Text
#
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# Check the handling of @@wsrep_dirty_reads
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#
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--source include/galera_cluster.inc
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--source include/have_innodb.inc
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# Save original auto_increment_offset values.
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--let $node_1=node_1
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--let $node_2=node_2
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--source include/auto_increment_offset_save.inc
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--connection node_2
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--let $wsrep_cluster_address_saved = `SELECT @@global.wsrep_cluster_address`
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CREATE TABLE t1(i INT) ENGINE=INNODB;
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INSERT INTO t1 VALUES(1);
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SELECT * FROM t1;
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create user user1;
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grant all privileges on *.* to user1;
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create user user2;
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grant all privileges on *.* to user2;
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SET @@global.wsrep_cluster_address = '';
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SET @@session.wsrep_dirty_reads=OFF;
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# Set wsrep_sync_wait to avoid ER_LOCK_WAIT_TIMEOUT (MDEV-6832).
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SET SESSION wsrep_sync_wait=0;
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# Must return 'OFF'
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SHOW STATUS LIKE 'wsrep_ready';
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# Must return 'Non-primary'
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SHOW STATUS LIKE 'wsrep_cluster_status';
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--error ER_UNKNOWN_COM_ERROR
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SELECT * FROM t1;
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SET @@session.wsrep_dirty_reads=ON;
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SELECT * FROM t1;
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--enable_connect_log
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--connect (con1, localhost, user1,,test,$NODE_MYPORT_2,$NODE_MYSOCK_2)
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#Just test the session behavior
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SET SESSION wsrep_sync_wait=0;
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set session wsrep_dirty_reads=1;
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#Prepared statement creation should be allowed MDEV-11479
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prepare stmt_show from 'select 1';
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prepare stmt_select from 'select * from t1';
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prepare stmt_insert from 'insert into t1 values(1)';
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set session wsrep_dirty_reads=0;
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#No Preapare stmt/proceure will be allowed
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--error ER_UNKNOWN_COM_ERROR
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execute stmt_show;
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--error ER_UNKNOWN_COM_ERROR
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execute stmt_select;
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--error ER_UNKNOWN_COM_ERROR
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execute stmt_insert;
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SET wsrep_dirty_reads=ON;
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select @@session.wsrep_dirty_reads;
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#Only prepare statement which does not change data should be allowed
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execute stmt_show;
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execute stmt_select;
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--error ER_UNKNOWN_COM_ERROR
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execute stmt_insert;
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SET @@global.wsrep_dirty_reads=ON;
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--connect (con2, localhost, user2,,test,$NODE_MYPORT_2,$NODE_MYSOCK_2)
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#Just test the session behavior
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select @@session.wsrep_dirty_reads;
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prepare stmt_show from 'select 1';
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prepare stmt_select from 'select * from t1';
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prepare stmt_insert from 'insert into t1 values(1)';
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#Only prepare statement which does not change data should be allowed
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execute stmt_show;
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execute stmt_select;
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--error ER_UNKNOWN_COM_ERROR
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execute stmt_insert;
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#wsrep_dirty_read should work when wsrep_sync_wait is 1 or non zero
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#because we already are disconnected , So It does not make any sense
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#to wait for other nodes
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SET SESSION wsrep_sync_wait=1;
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execute stmt_show;
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execute stmt_select;
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--error ER_UNKNOWN_COM_ERROR
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execute stmt_insert;
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SET SESSION wsrep_sync_wait=7;
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execute stmt_show;
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execute stmt_select;
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--error ER_UNKNOWN_COM_ERROR
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execute stmt_insert;
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--connection node_2
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SET @@global.wsrep_dirty_reads=OFF;
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--disable_query_log
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--eval SET @@global.wsrep_cluster_address = '$wsrep_cluster_address_saved'
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--enable_query_log
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--source include/wait_until_connected_again.inc
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--connection node_1
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SELECT * FROM t1;
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# Cleanup
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DROP TABLE t1;
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drop user user1;
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drop user user2;
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# Restore original auto_increment_offset values.
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--source include/auto_increment_offset_restore.inc
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--source include/galera_end.inc
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--echo # End of test
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