diff options
Diffstat (limited to 'mysql-test/suite/rpl/t/rpl_parallel_autoinc.test')
-rw-r--r-- | mysql-test/suite/rpl/t/rpl_parallel_autoinc.test | 140 |
1 files changed, 140 insertions, 0 deletions
diff --git a/mysql-test/suite/rpl/t/rpl_parallel_autoinc.test b/mysql-test/suite/rpl/t/rpl_parallel_autoinc.test new file mode 100644 index 00000000..0e96b4df --- /dev/null +++ b/mysql-test/suite/rpl/t/rpl_parallel_autoinc.test @@ -0,0 +1,140 @@ +--source include/have_binlog_format_statement.inc +--source include/have_innodb.inc +--source include/master-slave.inc + +--echo MDEV-31482: Lock wait timeout with INSERT-SELECT, autoinc, and statement-based replication + +# The scenario is transactions T1, T2, T3: +# +# T1 is waiting for T3 on an autoinc lock +# T2 is waiting for T1 to commit +# T3 is waiting on a normal row lock held by T2 +# +# This caused a hang until innodb_lock_wait_timeout, because autoinc +# locks were not reported to the in-order parallel replication, so T3 +# was not deadlock killed. + +--let $lock_wait_timeout=20 + +--let $rpl_connection_name= slave2 +--let $rpl_server_number= 2 +--source include/rpl_connect.inc + +--let $rpl_connection_name= slave3 +--let $rpl_server_number= 2 +--source include/rpl_connect.inc + +--connection master +ALTER TABLE mysql.gtid_slave_pos ENGINE=InnoDB; + +# A table as destination for INSERT-SELECT +CREATE TABLE t1 (a INT PRIMARY KEY AUTO_INCREMENT, b INT, c INT, INDEX (c)) ENGINE=InnoDB; +INSERT INTO t1 (b,c) VALUES (0, 1), (0, 1), (0, 2), (0,3), (0, 5), (0, 7), (0, 8); + +# A table as source for INSERT-SELECT. +CREATE TABLE t2 (a INT PRIMARY KEY, b INT) ENGINE=InnoDB; +INSERT INTO t2 VALUES (10,1), (20,2), (30,3), (40,4), (50,5); + +# A table to help order slave worker threads to setup the desired scenario. +CREATE TABLE t3 (a VARCHAR(20) PRIMARY KEY, b INT) ENGINE=InnoDB; +INSERT INTO t3 VALUES ('row for T1', 0), ('row for T2', 0), ('row for T3', 0); +--source include/save_master_gtid.inc + +--connection slave +--source include/sync_with_master_gtid.inc +--source include/stop_slave.inc +--let $save_innodb_lock_wait_timeout= `SELECT @@global.innodb_lock_wait_timeout` +--let $save_slave_parallel_threads= `SELECT @@global.slave_parallel_threads` +--let $save_slave_parallel_mode= `SELECT @@global.slave_parallel_mode` +set @@global.slave_parallel_threads= 3; +set @@global.slave_parallel_mode= OPTIMISTIC; +eval set @@global.innodb_lock_wait_timeout= $lock_wait_timeout; + +--connection master +# Transaction T1. +BEGIN; +UPDATE t3 SET b=b+1 where a="row for T1"; +INSERT INTO t1(b, c) SELECT 1, t2.b FROM t2 WHERE a=10; +COMMIT; + +# Transaction T2. +DELETE FROM t1 WHERE c >= 4 and c < 6; + +# Transaction T3. +BEGIN; +UPDATE t3 SET b=b+1 where a="row for T3"; +INSERT INTO t1(b, c) SELECT 3, t2.b FROM t2 WHERE a >= 20 AND a <= 40; +COMMIT; + +--source include/save_master_gtid.inc + +--connection slave1 +# Temporarily block T1 to create the scheduling that triggers the bug. +BEGIN; +SELECT * FROM t3 WHERE a="row for T1" FOR UPDATE; + +--connection slave2 +# Temporarily block T3 from starting (so T2 can reach commit). +BEGIN; +SELECT * FROM t3 WHERE a="row for T3" FOR UPDATE; + +--connection slave3 +# This critical step blocks T3 after it has inserted its first row, +# and thus taken the auto-increment lock, but before it has reached +# the point where it gets a row lock wait on T2. Even though +# auto-increment lock waits were not reported due to the bug, +# transitive lock waits (T1 waits on autoinc of T3 which waits on row +# on T2) _were_ reported as T1 waiting on T2, and thus a deadlock kill +# happened and the bug was not triggered. +BEGIN; +DELETE FROM t2 WHERE a=30; + +--connection slave +--source include/start_slave.inc + +# First let T2 complete until it is waiting for T1 to commit. +--let $wait_condition= SELECT count(*)=1 FROM information_schema.processlist WHERE state='Waiting for prior transaction to commit' and command LIKE 'Slave_worker'; +--source include/wait_condition.inc + +# Then let T3 reach the point where it has obtained the autoinc lock, +# but it is not yet waiting for a row lock held by T2. +--connection slave2 +ROLLBACK; +--let $wait_condition= SELECT count(*)=1 FROM information_schema.processlist WHERE state='Sending data' and info LIKE 'INSERT INTO t1(b, c) SELECT 3, t2.b%' and time_ms > 500 and command LIKE 'Slave_worker'; +--source include/wait_condition.inc + +# Now let T1 continue, while T3 is holding the autoinc lock but before +# it is waiting for T2. Wait a short while to give the hang a chance to +# happen; T1 needs to get to request the autoinc lock before we let T3 +# continue. (There's a small chance the sleep will be too small, which will +# let the test occasionally pass on non-fixed server). +--connection slave1 +ROLLBACK; +--sleep 0.5 + +# Now let T3 continue; the bug was that this lead to an undetected +# deadlock that remained until innodb lock wait timeout. +--connection slave3 +ROLLBACK; + +--connection slave +--let $slave_timeout= `SELECT $lock_wait_timeout/2` +--source include/sync_with_master_gtid.inc +--let $slave_timeout= +SELECT * FROM t1 ORDER BY a; +SELECT * FROM t2 ORDER BY a; +SELECT * FROM t3 ORDER BY a; + +# Cleanup. +--connection master +CALL mtr.add_suppression("Unsafe statement written to the binary log using statement format"); +DROP TABLE t1, t2, t3; + +--connection slave +--source include/stop_slave.inc +eval SET @@global.slave_parallel_threads= $save_slave_parallel_threads; +eval SET @@global.slave_parallel_mode= $save_slave_parallel_mode; +eval SET @@global.innodb_lock_wait_timeout= $save_innodb_lock_wait_timeout; +--source include/start_slave.inc +SELECT @@GLOBAL.innodb_autoinc_lock_mode; +--source include/rpl_end.inc |