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Problem was that tests select INFORMATION_SCHEMA.PROCESSLIST processes from user system user and empty state. Thus, there is not clear state for slave threads. Changes: - Added new status variables that store current amount of applier threads (wsrep_applier_thread_count) and rollbacker threads (wsrep_rollbacker_thread_count). This will make clear how many slave threads of certain type there is. - Added THD state "wsrep applier idle" when applier slave thread is waiting for work. This makes finding slave/applier threads easier. - Added force-restart option for mtr to always restart servers between tests to avoid race on start of the test - Added wait_condition_with_debug to wait until the passed statement returns true, or the operation times out. If operation times out, the additional error statement will be executed Changes to be committed: new file: mysql-test/include/force_restart.inc new file: mysql-test/include/wait_condition_with_debug.inc modified: mysql-test/mysql-test-run.pl modified: mysql-test/suite/galera/disabled.def modified: mysql-test/suite/galera/r/MW-336.result modified: mysql-test/suite/galera/r/galera_kill_applier.result modified: mysql-test/suite/galera/r/galera_var_slave_threads.result new file: mysql-test/suite/galera/t/MW-336.cnf modified: mysql-test/suite/galera/t/MW-336.test modified: mysql-test/suite/galera/t/galera_kill_applier.test modified: mysql-test/suite/galera/t/galera_parallel_autoinc_largetrx.test modified: mysql-test/suite/galera/t/galera_parallel_autoinc_manytrx.test modified: mysql-test/suite/galera/t/galera_var_slave_threads.test modified: mysql-test/suite/wsrep/disabled.def modified: mysql-test/suite/wsrep/r/variables.result modified: mysql-test/suite/wsrep/t/variables.test modified: sql/mysqld.cc modified: sql/wsrep_mysqld.cc modified: sql/wsrep_mysqld.h modified: sql/wsrep_thd.cc modified: sql/wsrep_var.cc
112 lines
3.2 KiB
Plaintext
112 lines
3.2 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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--source include/force_restart.inc
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--connection node_1
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--let $wsrep_slave_threads_orig = `SELECT @@wsrep_slave_threads`
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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(*) FROM INFORMATION_SCHEMA.PROCESSLIST WHERE USER = 'system user' AND STATE LIKE '%wsrep aborter%';
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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(*) FROM t1;
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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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--let $wait_condition = SELECT VARIABLE_VALUE = 64 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_applier_thread_count';
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--source include/wait_condition.inc
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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 70 replication events
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--let $count = 70
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while ($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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SELECT COUNT(*) FROM t2;
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--let $wait_condition = SELECT VARIABLE_VALUE = 1 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_applier_thread_count';
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--source include/wait_condition.inc
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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 VARIABLE_VALUE = 4 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_applier_thread_count';
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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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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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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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#
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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 VARIABLE_VALUE = 1 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_applier_thread_count';
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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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