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Merge acurtis@bk-internal.mysql.com:/home/bk/mysql-5.1-engines

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into  xiphis.org:/home/antony/work2/p2-bug20168.2
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acurtis@xiphis.org
2006-06-12 06:53:31 -07:00
parent 62729fcdfe e4f12577a6
commit 32fbbbb9b6
8 changed files with 114 additions and 43 deletions
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33
mysql-test/t/lock_multi.test
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@ -158,3 +158,36 @@ use test;
connection default;
# End of 5.0 tests
# 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;