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MDEV-27161: Add option for SQL thread to limit maximum execution time per query replicated
New Feature: ============ This patch adds a new system variable, @@slave_max_statement_time, which limits the execution time of s slave’s events that implements an equivalent to @@max_statement_time for slave applier. Reviewed By: ============ Andrei Elkin <andrei.elkin@mariadb.com>
This commit is contained in:
Brandon Nesterenko
committed by
Andrei
Andrei
parent
7864d955f3
commit
360d99429c
170
mysql-test/suite/rpl/r/rpl_slave_max_statement_time.result
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170
mysql-test/suite/rpl/r/rpl_slave_max_statement_time.result
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include/master-slave.inc
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[connection master]
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#
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# Set up
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#
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connection master;
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SET STATEMENT sql_log_bin=0 FOR CALL mtr.add_suppression("Unsafe statement written to the binary log using statement format");
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SET STATEMENT sql_log_bin=0 FOR CALL mtr.add_suppression("Unsafe statement written to the binary log using statement format");
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connection slave;
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SET STATEMENT sql_log_bin=0 FOR CALL mtr.add_suppression("Slave log event execution was interrupted");
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SET STATEMENT sql_log_bin=0 FOR CALL mtr.add_suppression("Unsafe statement written to the binary log using statement format");
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SET @save_slave_max_statement_time=@@GLOBAL.slave_max_statement_time;
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#
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# Test Case 1) Using a serial slave, the SQL thread should time out when
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# its underlying event executes for longer than @@slave_max_statement_time.
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#
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connection master;
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create table t1(a int not null auto_increment, b int, primary key(a)) engine=InnoDB;
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include/save_master_gtid.inc
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connection slave;
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include/sync_with_master_gtid.inc
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include/stop_slave.inc
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SET @old_slave_max_statement_time=@@GLOBAL.slave_max_statement_time;
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SET GLOBAL slave_max_statement_time=0.75;
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connection master;
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# Long running command due to a lock conflict
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INSERT INTO t1(b) VALUES (1);
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include/save_master_gtid.inc
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connection slave1;
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BEGIN;
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INSERT INTO t1(b) VALUES (1);
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connection slave;
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# Starting slave to receive event which will take longer to execute
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# than slave_max_statement_time
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START SLAVE;
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include/wait_for_slave_sql_error.inc [errno=4192]
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# Ensuring event was not processed..
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# ..success
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# Remove slave timeout and catch up to master
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SET GLOBAL slave_max_statement_time=0;
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connection slave1;
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ROLLBACK;
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include/start_slave.inc
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include/sync_with_master_gtid.inc
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# Test case cleanup
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connection master;
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DROP TABLE t1;
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include/save_master_gtid.inc
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connection slave;
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include/sync_with_master_gtid.inc
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include/stop_slave.inc
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SET GLOBAL slave_max_statement_time=@old_slave_max_statement_time;
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include/start_slave.inc
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#
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# Test Case 2) Using a parallel slave, a worker thread should time out
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# when its underlying event executes for longer than
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# @@slave_max_statement_time
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#
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include/stop_slave.inc
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SET @old_parallel_threads=@@GLOBAL.slave_parallel_threads;
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SET @old_parallel_mode=@@GLOBAL.slave_parallel_mode;
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SET GLOBAL slave_parallel_threads=2;
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SET GLOBAL slave_parallel_mode='optimistic';
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include/start_slave.inc
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connection master;
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create table t1(a int not null auto_increment, b int, primary key(a)) engine=InnoDB;
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include/save_master_gtid.inc
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connection slave;
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include/sync_with_master_gtid.inc
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include/stop_slave.inc
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SET @old_slave_max_statement_time=@@GLOBAL.slave_max_statement_time;
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SET GLOBAL slave_max_statement_time=0.75;
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connection master;
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# Long running command due to a lock conflict
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INSERT INTO t1(b) VALUES (1);
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include/save_master_gtid.inc
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connection slave1;
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BEGIN;
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INSERT INTO t1(b) VALUES (1);
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connection slave;
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# Starting slave to receive event which will take longer to execute
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# than slave_max_statement_time
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START SLAVE;
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include/wait_for_slave_sql_error.inc [errno=4192]
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# Ensuring event was not processed..
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# ..success
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# Remove slave timeout and catch up to master
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SET GLOBAL slave_max_statement_time=0;
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connection slave1;
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ROLLBACK;
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include/start_slave.inc
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include/sync_with_master_gtid.inc
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# Test case cleanup
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connection master;
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DROP TABLE t1;
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include/save_master_gtid.inc
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connection slave;
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include/sync_with_master_gtid.inc
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include/stop_slave.inc
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SET GLOBAL slave_max_statement_time=@old_slave_max_statement_time;
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include/start_slave.inc
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include/stop_slave.inc
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SET GLOBAL slave_parallel_mode=@old_parallel_mode;
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SET GLOBAL slave_parallel_threads=@old_parallel_threads;
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include/start_slave.inc
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#
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# Test Case 3) Load-based log events (from LOAD DATA INFILE) should time
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# out if their execution time exceeds @@slave_max_statement_time
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#
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connection master;
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create table t1(a int not null auto_increment, b int, primary key(a)) engine=InnoDB;
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include/save_master_gtid.inc
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connection slave;
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include/sync_with_master_gtid.inc
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include/stop_slave.inc
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SET @old_slave_max_statement_time=@@GLOBAL.slave_max_statement_time;
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SET GLOBAL slave_max_statement_time=0.75;
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connection master;
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# Long running command due to a lock conflict
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load data infile '../../std_data/rpl_loaddata.dat' into table t1;
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include/save_master_gtid.inc
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connection slave1;
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BEGIN;
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INSERT INTO t1(b) VALUES (1);
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connection slave;
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# Starting slave to receive event which will take longer to execute
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# than slave_max_statement_time
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START SLAVE;
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include/wait_for_slave_sql_error.inc [errno=4192]
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# Ensuring event was not processed..
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# ..success
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# Remove slave timeout and catch up to master
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SET GLOBAL slave_max_statement_time=0;
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connection slave1;
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ROLLBACK;
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include/start_slave.inc
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include/sync_with_master_gtid.inc
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# Test case cleanup
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connection master;
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DROP TABLE t1;
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include/save_master_gtid.inc
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connection slave;
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include/sync_with_master_gtid.inc
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include/stop_slave.inc
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SET GLOBAL slave_max_statement_time=@old_slave_max_statement_time;
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include/start_slave.inc
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#
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# Test Case 4) Locally executed long running statements should not time
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# out due to @@slave_max_statement_time
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#
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connection slave;
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include/stop_slave.inc
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SET @old_slave_max_statement_time=@@GLOBAL.slave_max_statement_time;
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SET @old_gtid_domain_id=@@GLOBAL.gtid_domain_id;
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SET @@GLOBAL.slave_max_statement_time=0.75;
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SET @@GLOBAL.gtid_domain_id=1;
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include/start_slave.inc
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CREATE TABLE t2 (a int);
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SET STATEMENT sql_log_bin=0 FOR INSERT INTO t2 SELECT SLEEP(1);
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DROP TABLE t2;
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include/stop_slave.inc
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SET GLOBAL gtid_domain_id=@old_gtid_domain_id;
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SET GLOBAL slave_max_statement_time=@old_slave_max_statement_time;
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include/start_slave.inc
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# Cleanup
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include/stop_slave.inc
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SET GLOBAL slave_max_statement_time=@save_slave_max_statement_time;
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include/start_slave.inc
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include/rpl_end.inc
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# End of rpl_slave_max_statement_time.test
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