diff options
Diffstat (limited to 'mysql-test/suite/rpl/t/rpl_parallel_retry_deadlock.test')
-rw-r--r-- | mysql-test/suite/rpl/t/rpl_parallel_retry_deadlock.test | 282 |
1 files changed, 281 insertions, 1 deletions
diff --git a/mysql-test/suite/rpl/t/rpl_parallel_retry_deadlock.test b/mysql-test/suite/rpl/t/rpl_parallel_retry_deadlock.test index 50b216b6f58..54ac859bb33 100644 --- a/mysql-test/suite/rpl/t/rpl_parallel_retry_deadlock.test +++ b/mysql-test/suite/rpl/t/rpl_parallel_retry_deadlock.test @@ -1 +1,281 @@ ---source include/rpl_parallel_retry_deadlock.inc +--echo *** MDEV-7326 Server deadlock in connection with parallel replication *** +--source include/have_innodb.inc +--source include/have_debug.inc +--source include/have_debug_sync.inc +--source include/master-slave.inc + +--connection server_2 +SET @old_parallel_threads=@@GLOBAL.slave_parallel_threads; +SET @old_parallel_mode=@@GLOBAL.slave_parallel_mode; +--source include/stop_slave.inc +# Test assumes that 'conservative' mode is in effect. i.e +# Do not start parallel execution of this event group until all prior groups +# have reached the commit phase. Refer 'rpl_parallel_start_waiting_for_prior' +# debug simumation. +SET GLOBAL slave_parallel_mode='conservative'; +SET GLOBAL slave_parallel_threads=10; +CHANGE MASTER TO master_use_gtid=slave_pos; +--source include/start_slave.inc + +--connection server_1 +ALTER TABLE mysql.gtid_slave_pos ENGINE=InnoDB; +CREATE TABLE t1 (a int PRIMARY KEY) ENGINE=MyISAM; +CREATE TABLE t2 (a int PRIMARY KEY) ENGINE=InnoDB; +CREATE TABLE t6 (a INT) ENGINE=MyISAM; +--save_master_pos + +--connection server_2 +--sync_with_master + +--connection server_1 +# Use a stored function to inject a debug_sync into the appropriate THD. +# The function does nothing on the master, and on the slave it injects the +# desired debug_sync action(s). +SET sql_log_bin=0; +--delimiter || +CREATE FUNCTION foo(x INT, d1 VARCHAR(500), d2 VARCHAR(500)) + RETURNS INT DETERMINISTIC + BEGIN + RETURN x; + END +|| +--delimiter ; +SET sql_log_bin=1; + +--connection server_2 +SET sql_log_bin=0; +--delimiter || +CREATE FUNCTION foo(x INT, d1 VARCHAR(500), d2 VARCHAR(500)) + RETURNS INT DETERMINISTIC + BEGIN + IF d1 != '' THEN + SET debug_sync = d1; + END IF; + IF d2 != '' THEN + SET debug_sync = d2; + END IF; + RETURN x; + END +|| +--delimiter ; +SET sql_log_bin=1; + +# We use three transactions, each in a separate group commit. +# T1 does mark_start_commit(), then gets a deadlock error. +# T2 wakes up and starts running +# T1 does unmark_start_commit() +# T3 goes to wait for T2 to start its commit +# T2 does mark_start_commit() +# The bug was that at this point, T3 got deadlocked. Because T1 has unmarked(), +# T3 did not yet see the count_committing_event_groups reach its target value +# yet. But when T1 later re-did mark_start_commit(), it failed to send a wakeup +# to T3. + +--connection server_2 +--source include/stop_slave.inc +SET GLOBAL slave_parallel_threads=0; +SET GLOBAL slave_parallel_threads=3; +SET GLOBAL debug_dbug="+d,rpl_parallel_simulate_temp_err_xid"; +--source include/start_slave.inc + +--connection server_1 +SET @old_format= @@SESSION.binlog_format; +SET binlog_format= STATEMENT; +# This debug_sync will linger on and be used to control T3 later. +INSERT INTO t1 VALUES (foo(50, + "rpl_parallel_start_waiting_for_prior SIGNAL t3_ready", + "rpl_parallel_end_of_group SIGNAL prep_ready WAIT_FOR prep_cont")); +--save_master_pos +--connection server_2 +# Wait for the debug_sync point for T3 to be set. But let the preparation +# transaction remain hanging, so that T1 and T2 will be scheduled for the +# remaining two worker threads. +SET DEBUG_SYNC= "now WAIT_FOR prep_ready"; + +--connection server_1 +INSERT INTO t2 VALUES (foo(50, + "rpl_parallel_simulate_temp_err_xid SIGNAL t1_ready1 WAIT_FOR t1_cont1", + "rpl_parallel_retry_after_unmark SIGNAL t1_ready2 WAIT_FOR t1_cont2")); +--save_master_pos + +--connection server_2 +SET DEBUG_SYNC= "now WAIT_FOR t1_ready1"; +# T1 has now done mark_start_commit(). It will later do a rollback and retry. + +--connection server_1 +# Use a MyISAM table for T2 and T3, so they do not trigger the +# rpl_parallel_simulate_temp_err_xid DBUG insertion on XID event. +INSERT INTO t1 VALUES (foo(51, + "rpl_parallel_before_mark_start_commit SIGNAL t2_ready1 WAIT_FOR t2_cont1", + "rpl_parallel_after_mark_start_commit SIGNAL t2_ready2")); + +--connection server_2 +SET DEBUG_SYNC= "now WAIT_FOR t2_ready1"; +# T2 has now started running, but has not yet done mark_start_commit() +SET DEBUG_SYNC= "now SIGNAL t1_cont1"; +SET DEBUG_SYNC= "now WAIT_FOR t1_ready2"; +# T1 has now done unmark_start_commit() in preparation for its retry. + +--connection server_1 +INSERT INTO t1 VALUES (52); +SET BINLOG_FORMAT= @old_format; +SELECT * FROM t2 WHERE a>=50 ORDER BY a; +SELECT * FROM t1 WHERE a>=50 ORDER BY a; + +--connection server_2 +# Let the preparation transaction complete, so that the same worker thread +# can continue with the transaction T3. +SET DEBUG_SYNC= "now SIGNAL prep_cont"; +SET DEBUG_SYNC= "now WAIT_FOR t3_ready"; +# T3 has now gone to wait for T2 to start committing +SET DEBUG_SYNC= "now SIGNAL t2_cont1"; +SET DEBUG_SYNC= "now WAIT_FOR t2_ready2"; +# T2 has now done mark_start_commit(). +# Let things run, and check that T3 does not get deadlocked. +SET DEBUG_SYNC= "now SIGNAL t1_cont2"; +--sync_with_master + +--connection server_1 +--save_master_pos +--connection server_2 +--sync_with_master +SELECT * FROM t2 WHERE a>=50 ORDER BY a; +SELECT * FROM t1 WHERE a>=50 ORDER BY a; +SET DEBUG_SYNC="reset"; + +# Re-spawn the worker threads to remove any DBUG injections or DEBUG_SYNC. +--source include/stop_slave.inc +SET GLOBAL debug_dbug=@old_dbug; +SET GLOBAL slave_parallel_mode=@old_parallel_mode; +SET GLOBAL slave_parallel_threads=0; +SET GLOBAL slave_parallel_threads=10; +--source include/start_slave.inc + + +--echo *** MDEV-7326 Server deadlock in connection with parallel replication *** +# Similar to the previous test, but with T2 and T3 in the same GCO. +# We use three transactions, T1 in one group commit and T2/T3 in another. +# T1 does mark_start_commit(), then gets a deadlock error. +# T2 wakes up and starts running +# T1 does unmark_start_commit() +# T3 goes to wait for T1 to start its commit +# T2 does mark_start_commit() +# The bug was that at this point, T3 got deadlocked. T2 increments the +# count_committing_event_groups but does not signal T3, as they are in +# the same GCO. Then later when T1 increments, it would also not signal +# T3, because now the count_committing_event_groups is not equal to the +# wait_count of T3 (it is one larger). + +--connect (con_temp3,127.0.0.1,root,,test,$SERVER_MYPORT_1,) +--connect (con_temp4,127.0.0.1,root,,test,$SERVER_MYPORT_1,) + +--connection server_2 +--source include/stop_slave.inc +SET @old_parallel_mode= @@GLOBAL.slave_parallel_mode; +SET GLOBAL slave_parallel_mode='conservative'; +SET GLOBAL slave_parallel_threads=0; +SET GLOBAL slave_parallel_threads=3; +SET GLOBAL debug_dbug="+d,rpl_parallel_simulate_temp_err_xid"; +--source include/start_slave.inc + +--connection server_1 +SET @old_format= @@SESSION.binlog_format; +SET binlog_format= STATEMENT; +# This debug_sync will linger on and be used to control T3 later. +INSERT INTO t1 VALUES (foo(60, + "rpl_parallel_start_waiting_for_prior SIGNAL t3_ready", + "rpl_parallel_end_of_group SIGNAL prep_ready WAIT_FOR prep_cont")); +--save_master_pos +--connection server_2 +# Wait for the debug_sync point for T3 to be set. But let the preparation +# transaction remain hanging, so that T1 and T2 will be scheduled for the +# remaining two worker threads. +SET DEBUG_SYNC= "now WAIT_FOR prep_ready"; + +--connection server_1 +INSERT INTO t2 VALUES (foo(60, + "rpl_parallel_simulate_temp_err_xid SIGNAL t1_ready1 WAIT_FOR t1_cont1", + "rpl_parallel_retry_after_unmark SIGNAL t1_ready2 WAIT_FOR t1_cont2")); +--save_master_pos + +--connection server_2 +SET DEBUG_SYNC= "now WAIT_FOR t1_ready1"; +# T1 has now done mark_start_commit(). It will later do a rollback and retry. + +# Do T2 and T3 in a single group commit. +# Use a MyISAM table for T2 and T3, so they do not trigger the +# rpl_parallel_simulate_temp_err_xid DBUG insertion on XID event. +--connection con_temp3 +SET debug_sync='commit_after_release_LOCK_prepare_ordered SIGNAL master_queued1 WAIT_FOR master_cont1'; +SET binlog_format=statement; +send INSERT INTO t1 VALUES (foo(61, + "rpl_parallel_before_mark_start_commit SIGNAL t2_ready1 WAIT_FOR t2_cont1", + "rpl_parallel_after_mark_start_commit SIGNAL t2_ready2")); + +--connection server_1 +SET debug_sync='now WAIT_FOR master_queued1'; + +--connection con_temp4 +SET debug_sync='commit_after_release_LOCK_prepare_ordered SIGNAL master_queued2'; +send INSERT INTO t6 VALUES (62); + +--connection server_1 +SET debug_sync='now WAIT_FOR master_queued2'; +SET debug_sync='now SIGNAL master_cont1'; + +--connection con_temp3 +REAP; +--connection con_temp4 +REAP; + +--connection server_1 +SET debug_sync='RESET'; +SET BINLOG_FORMAT= @old_format; +SELECT * FROM t2 WHERE a>=60 ORDER BY a; +SELECT * FROM t1 WHERE a>=60 ORDER BY a; +SELECT * FROM t6 WHERE a>=60 ORDER BY a; + +--connection server_2 +SET DEBUG_SYNC= "now WAIT_FOR t2_ready1"; +# T2 has now started running, but has not yet done mark_start_commit() +SET DEBUG_SYNC= "now SIGNAL t1_cont1"; +SET DEBUG_SYNC= "now WAIT_FOR t1_ready2"; +# T1 has now done unmark_start_commit() in preparation for its retry. + +--connection server_2 +# Let the preparation transaction complete, so that the same worker thread +# can continue with the transaction T3. +SET DEBUG_SYNC= "now SIGNAL prep_cont"; +SET DEBUG_SYNC= "now WAIT_FOR t3_ready"; +# T3 has now gone to wait for T2 to start committing +SET DEBUG_SYNC= "now SIGNAL t2_cont1"; +SET DEBUG_SYNC= "now WAIT_FOR t2_ready2"; +# T2 has now done mark_start_commit(). +# Let things run, and check that T3 does not get deadlocked. +SET DEBUG_SYNC= "now SIGNAL t1_cont2"; +--sync_with_master + +--connection server_1 +--save_master_pos +--connection server_2 +--sync_with_master +SELECT * FROM t2 WHERE a>=60 ORDER BY a; +SELECT * FROM t1 WHERE a>=60 ORDER BY a; +SELECT * FROM t6 WHERE a>=60 ORDER BY a; +SET DEBUG_SYNC="reset"; + +# Clean up. +--source include/stop_slave.inc +SET GLOBAL debug_dbug=@old_dbug; +SET GLOBAL slave_parallel_mode=@old_parallel_mode; +SET GLOBAL slave_parallel_threads=@old_parallel_threads; +--source include/start_slave.inc + +--connection server_1 +DROP function foo; +DROP TABLE t1,t2,t6; +--disconnect con_temp3 +--disconnect con_temp4 +SET DEBUG_SYNC= 'RESET'; + +--source include/rpl_end.inc |