diff options
Diffstat (limited to 'mysql-test/t/lock_multi.test')
| -rw-r--r-- | mysql-test/t/lock_multi.test | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/mysql-test/t/lock_multi.test b/mysql-test/t/lock_multi.test index 3c829848bf3..ee03088b8c3 100644 --- a/mysql-test/t/lock_multi.test +++ b/mysql-test/t/lock_multi.test @@ -109,6 +109,39 @@ unlock tables; drop table t1; # +# Bug#19815 - CREATE/RENAME/DROP DATABASE can deadlock on a global read lock +# +connect (con1,localhost,root,,); +connect (con2,localhost,root,,); +# +connection con1; +CREATE DATABASE mysqltest_1; +FLUSH TABLES WITH READ LOCK; +# +# With bug in place: acquire LOCK_mysql_create_table and +# wait in wait_if_global_read_lock(). +connection con2; +send DROP DATABASE mysqltest_1; +--sleep 1 +# +# With bug in place: try to acquire LOCK_mysql_create_table... +# When fixed: Reject dropping db because of the read lock. +connection con1; +--error ER_CANT_UPDATE_WITH_READLOCK +DROP DATABASE mysqltest_1; +UNLOCK TABLES; +# +connection con2; +reap; +# +connection default; +disconnect con1; +disconnect con2; +# This must have been dropped by connection 2 already, +# which waited until the global read lock was released. +--error ER_DB_DROP_EXISTS +DROP DATABASE mysqltest_1; + # Bug#16986 - Deadlock condition with MyISAM tables # connection locker; |