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--source include/have_debug.inc --source include/have_debug_sync.inc --source include/have_binlog_format_statement.inc --echo # --echo # Bug #30215068 BINLOG ROTATION DEADLOCK WHEN INNODB CONCURRENCY LIMIT SETTED --echo # --enable_connect_log --connect (con1, localhost, root,,) select @@innodb_thread_concurrency; CREATE TABLE t1 (c1 INT) Engine=InnoDB; CREATE TABLE t2 (c1 INT, c2 int, c3 varchar(200)) Engine=InnoDB; SET @debug_save= @@SESSION.DEBUG; SET SESSION DEBUG = '+d,force_rotate'; SET DEBUG_SYNC = 'stop_binlog_rotation_after_acquiring_lock_log SIGNAL rotate_stopped WAIT_FOR proceed_rotate'; --send INSERT INTO t1 VALUES (1); # Since innodb_thread_concurrency=1, Send txn from a different connection --connect (con2, localhost, root,,) SET DEBUG_SYNC= 'now WAIT_FOR rotate_stopped'; --SEND UPDATE t2 SET C2=1 WHERE C1 = 1; --connect (con3, localhost, root,,) # Verify that con1 is waiting in stop_binlog_rotation_after_acquiring_lock_log sync point and con 2 is waiting for con1 to commit --let $wait_condition=SELECT COUNT(*)=1 FROM INFORMATION_SCHEMA.PROCESSLIST WHERE State = 'debug sync point: stop_binlog_rotation_after_acquiring_lock_log' and info = 'INSERT INTO t1 VALUES (1)' --source include/wait_condition.inc --let $wait_condition=SELECT COUNT(*)=1 FROM INFORMATION_SCHEMA.PROCESSLIST WHERE State = 'query end' and info = 'UPDATE t2 SET C2=1 WHERE C1 = 1' --source include/wait_condition.inc # Continue rotate thread (con1) SET DEBUG_SYNC= 'now SIGNAL proceed_rotate'; --connection con1 #without fix con1 will hang because it cannot get innodb concurrency ticket --reap SET @@SESSION.DEBUG= @debug_save; --connection con2 --reap # Cleanup connection default; --disconnect con1 --disconnect con2 --disconnect con3 --disable_connect_log DROP TABLE t1,t2;