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00b6fff2e7
Decoupled wsrep thread count from connection count. By doing so, the number of wsrep threads (applier/rollbacker) would no longer affect the threads_connected status variable and thus maximum allowable user connections limit would be @@max_connections. Also introduced a new status variable 'wsrep_thread_count' to hold the number of wsrep applier/rollbacker threads. Added a test case.
64 lines
1.9 KiB
Plaintext
64 lines
1.9 KiB
Plaintext
--source include/have_wsrep.inc
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--echo
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--echo # MDEV#5534: mysql_tzinfo_to_sql generates wrong query
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--echo #
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--echo # Testing wsrep_replicate_myisam variable.
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--error ER_INCORRECT_GLOBAL_LOCAL_VAR
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SELECT @@session.wsrep_replicate_myisam;
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SELECT @@global.wsrep_replicate_myisam;
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--error ER_GLOBAL_VARIABLE
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SET SESSION wsrep_replicate_myisam= ON;
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SET GLOBAL wsrep_replicate_myisam= ON;
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# Reset it back.
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SET GLOBAL wsrep_replicate_myisam= OFF;
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--echo
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--echo #
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--echo # MDEV#6206: wsrep_slave_threads subtracts from max_connections
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--echo #
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call mtr.add_suppression("safe_mutex: Found wrong usage of mutex 'LOCK_wsrep_slave_threads' and 'LOCK_global_system_variables'");
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call mtr.add_suppression("WSREP: Failed to get provider options");
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SELECT @@global.wsrep_provider;
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SELECT @@global.wsrep_slave_threads;
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SELECT @@global.wsrep_cluster_address;
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SHOW STATUS LIKE 'threads_connected';
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SHOW STATUS LIKE 'wsrep_thread_count';
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--echo
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eval SET GLOBAL wsrep_provider= '$WSREP_PROVIDER';
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SELECT @@global.wsrep_provider;
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SELECT @@global.wsrep_cluster_address;
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SHOW STATUS LIKE 'threads_connected';
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SHOW STATUS LIKE 'wsrep_thread_count';
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--echo
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--echo # Setting wsrep_cluster_address triggers the creation of
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--echo # applier/rollbacker threads.
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SET GLOBAL wsrep_cluster_address= 'gcomm://';
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--echo # Wait for applier threads to get created.
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sleep 3;
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SELECT @@global.wsrep_provider;
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SELECT @@global.wsrep_cluster_address;
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SHOW STATUS LIKE 'threads_connected';
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SHOW STATUS LIKE 'wsrep_thread_count';
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--echo
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SET @wsrep_slave_threads_saved= @@global.wsrep_slave_threads;
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SET GLOBAL wsrep_slave_threads= 10;
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--echo # Wait for applier threads to get created.
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sleep 3;
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SHOW STATUS LIKE 'threads_connected';
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SHOW STATUS LIKE 'wsrep_thread_count';
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# reset (for mtr internal checks)
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SET GLOBAL wsrep_slave_threads= @wsrep_slave_threads_saved;
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SET GLOBAL wsrep_cluster_address= '';
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SET GLOBAL wsrep_provider= 'none';
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--echo # End of test.
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