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fba683c069
MDEV-17058: Test failure on wsrep.variables MDEV-17060: Test failure on galera.galera_var_slave_threads Fix incorrect calculation of increased applier (slave) threads. Note that increase change takes effect "immediately" but we should use proper wait condition to wait it. Reducing the number of slave threads is not immediate as thread will only exit after a replication event.
119 lines
3.7 KiB
Plaintext
119 lines
3.7 KiB
Plaintext
#
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# This tests the very basic operations around wsrep-slave-threads
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# More complex scenarios will be tested separately in the context of
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# parallel replication
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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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--let $wsrep_slave_threads_orig = `SELECT @@wsrep_slave_threads`
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--connection node_1
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CREATE TABLE t1 (f1 INT PRIMARY KEY) Engine=InnoDB;
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CREATE TABLE t2 (f1 INT AUTO_INCREMENT PRIMARY KEY) Engine=InnoDB;
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--connection node_2
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CALL mtr.add_suppression("WSREP: Refusing exit for the last slave thread.");
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# Setting wsrep_slave_threads to zero triggers a warning
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SET GLOBAL wsrep_slave_threads = 0;
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SHOW WARNINGS;
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SELECT @@wsrep_slave_threads = 1;
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SET GLOBAL wsrep_slave_threads = 1;
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# There is a separate wsrep_aborter thread at all times
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SELECT COUNT(*) = 2 FROM INFORMATION_SCHEMA.PROCESSLIST WHERE USER = 'system user';
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SELECT COUNT(*) = 1 FROM INFORMATION_SCHEMA.PROCESSLIST WHERE USER = 'system user' AND STATE LIKE '%wsrep aborter%';
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#
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# Increase the number of slave threads. The change takes effect immediately
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#
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SET GLOBAL wsrep_slave_threads = 64;
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--connection node_1
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INSERT INTO t1 VALUES (1);
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--connection node_2
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--let $wait_timeout=600
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--let $wait_condition = SELECT COUNT(*) = 1 FROM t1;
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--source include/wait_condition.inc
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SELECT COUNT(*) = 1 FROM t1;
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--let $wait_condition = SELECT COUNT(*) = @@wsrep_slave_threads + 1 FROM INFORMATION_SCHEMA.PROCESSLIST WHERE USER = 'system user';
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--source include/wait_condition.inc
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SELECT COUNT(*) = 1 FROM INFORMATION_SCHEMA.PROCESSLIST WHERE USER = 'system user' AND STATE LIKE '%wsrep aborter%';
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#
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# Reduce the number of slave threads. The change is not immediate -- a thread will only exit after a replication event
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#
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SET GLOBAL wsrep_slave_threads = 1;
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--connection node_1
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--disable_result_log
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--disable_query_log
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# Generate 64 replication events
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--let $count = 64
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while ($count)
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{
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INSERT INTO t2 VALUES (DEFAULT);
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--dec $count
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}
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--enable_query_log
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--enable_result_log
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--connection node_2
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--let $wait_condition = SELECT COUNT(*) = 64 FROM t2;
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--source include/wait_condition.inc
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SELECT COUNT(*) = 64 FROM t2;
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--let $wait_condition = SELECT COUNT(*) = @@wsrep_slave_threads + 1 FROM INFORMATION_SCHEMA.PROCESSLIST WHERE USER = 'system user';
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--source include/wait_condition.inc
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SELECT COUNT(*) = 1 FROM INFORMATION_SCHEMA.PROCESSLIST WHERE USER = 'system user' AND STATE LIKE '%wsrep aborter%';
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--eval SET GLOBAL wsrep_slave_threads = $wsrep_slave_threads_orig
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DROP TABLE t1;
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DROP TABLE t2;
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--echo #
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--echo # lp:1372840 - Changing wsrep_slave_threads causes future connections to hang
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--echo #
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--connection node_1
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CREATE TABLE t1 (i INT AUTO_INCREMENT PRIMARY KEY) ENGINE=INNODB;
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--connection node_2
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SET GLOBAL wsrep_slave_threads = 4;
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--let $wait_condition = SELECT COUNT(*) = @@wsrep_slave_threads + 1 FROM INFORMATION_SCHEMA.PROCESSLIST WHERE USER = 'system user'
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--source include/wait_condition.inc
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SET GLOBAL wsrep_slave_threads = 1;
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--connection node_1
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INSERT INTO t1 VALUES (DEFAULT);
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INSERT INTO t1 VALUES (DEFAULT);
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INSERT INTO t1 VALUES (DEFAULT);
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DROP TABLE t1;
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--connection node_2
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# Wait until above DDL is replicated
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--let $wait_condition = SELECT COUNT(*) = 0 FROM INFORMATION_SCHEMA.INNODB_SYS_TABLES WHERE NAME LIKE 'test/t%';
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--source include/wait_condition.inc
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SELECT NAME FROM INFORMATION_SCHEMA.INNODB_SYS_TABLES WHERE NAME LIKE 'test/t%';
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#
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# make sure that we are left with exactly one applier thread before we leaving the test
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#
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--let $wait_condition = SELECT COUNT(*) = 2 FROM INFORMATION_SCHEMA.PROCESSLIST WHERE USER = 'system user'
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--source include/wait_condition.inc
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SELECT COUNT(*) = 1 FROM INFORMATION_SCHEMA.PROCESSLIST WHERE USER = 'system user' AND STATE LIKE '%wsrep aborter%';
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--echo # End of tests
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