diff options
Diffstat (limited to 'mysql-test/suite/rpl/t/parallel_backup.test')
| -rw-r--r-- | mysql-test/suite/rpl/t/parallel_backup.test | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/mysql-test/suite/rpl/t/parallel_backup.test b/mysql-test/suite/rpl/t/parallel_backup.test new file mode 100644 index 00000000000..6ed182c024b --- /dev/null +++ b/mysql-test/suite/rpl/t/parallel_backup.test @@ -0,0 +1,75 @@ +--source include/have_innodb.inc +# The test is not format specific, MIXED is required to optimize testing time +--source include/have_binlog_format_mixed.inc +--source include/master-slave.inc + +--echo # +--echo # MDEV-21953: deadlock between BACKUP STAGE BLOCK_COMMIT and parallel +--echo # replication +--echo # + +--connection master +CREATE TABLE t1 (a INT PRIMARY KEY) ENGINE = innodb; + +--sync_slave_with_master +--source include/stop_slave.inc +SET @old_parallel_threads= @@GLOBAL.slave_parallel_threads; +SET @old_parallel_mode = @@GLOBAL.slave_parallel_mode; +SET @@global.slave_parallel_threads= 2; +SET @@global.slave_parallel_mode = 'optimistic'; + +--connection master +INSERT INTO t1 VALUES (1); +INSERT INTO t1 VALUES (2); +--save_master_pos + +# The plot: +# Block the 1st of two workers and, at waiting-for-prior-commit by the 2nd, +# issue BACKUP commands. +# BLOCK_COMMIT may hang so it is --send. +# Release the 1st worker to observe a deadlock unless its fixed. + +--connect (aux_slave,127.0.0.1,root,,test,$SLAVE_MYPORT,) +BEGIN; +# block the 1st worker and wait for the 2nd ready to commit +INSERT INTO t1 VALUES (1); + +--connection slave +--source include/start_slave.inc + +--connection aux_slave +--let $wait_condition= SELECT COUNT(*) > 0 FROM information_schema.processlist WHERE state = "Waiting for prior transaction to commit" +--source include/wait_condition.inc + +# While the 1st worker is locked out run backup +--connect (backup_slave,127.0.0.1,root,,test,$SLAVE_MYPORT,) +BACKUP STAGE START; +--send BACKUP STAGE BLOCK_COMMIT + +# release the 1st work +--connection aux_slave +--sleep 1 +ROLLBACK; + +--connection backup_slave +--reap +BACKUP STAGE END; + +--connection slave +--sync_with_master + +--let $diff_tables= master:t1,slave:t1 +--source include/diff_tables.inc + + +# Clean up. +--connection slave +--source include/stop_slave.inc +SET @@global.slave_parallel_threads= @old_parallel_threads; +SET @@global.slave_parallel_mode = @old_parallel_mode; +--source include/start_slave.inc + +--connection server_1 +DROP TABLE t1; + +--source include/rpl_end.inc |