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Diffstat (limited to 'mysql-test/t/merge.test')
| -rw-r--r-- | mysql-test/t/merge.test | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/mysql-test/t/merge.test b/mysql-test/t/merge.test index 1553d7f29c5..3633a8b30ad 100644 --- a/mysql-test/t/merge.test +++ b/mysql-test/t/merge.test @@ -2,6 +2,9 @@ # Test of MERGE TABLES # +# Save the initial number of concurrent sessions. +--source include/count_sessions.inc + # MERGE tables require MyISAM tables let $default=`select @@global.storage_engine`; set global storage_engine=myisam; @@ -2664,6 +2667,55 @@ drop view v1; drop temporary table tmp; drop table t1, t2, t3, m1, m2; + +--echo # +--echo # Test for bug #56251 "Deadlock with INSERT DELAYED and MERGE tables". +--echo # +connect (con1,localhost,root,,); +connection default; +--disable_warnings +drop table if exists t1, t2, tm; +--enable_warnings +create table t1(a int); +create table t2(a int); +create table tm(a int) engine=merge union=(t1, t2); +begin; +select * from t1; + +--echo # Connection 'con1'. +connection con1; +--echo # Sending: +--send alter table t1 comment 'test' + +--echo # Connection 'default'. +connection default; +--echo # Wait until ALTER TABLE blocks and starts waiting +--echo # for connection 'default'. It should wait with a +--echo # pending SNW lock on 't1'. +let $wait_condition= + select count(*) = 1 from information_schema.processlist + where state = "Waiting for table metadata lock" and + info = "alter table t1 comment 'test'"; +--source include/wait_condition.inc +--echo # Attempt to perform delayed insert into 'tm' should not lead +--echo # to a deadlock. Instead error ER_DELAYED_NOT_SUPPORTED should +--echo # be emitted. +--error ER_DELAYED_NOT_SUPPORTED +insert delayed into tm values (1); +--echo # Unblock ALTER TABLE. +commit; + +--echo # Connection 'con1'. +connection con1; +--echo # Reaping ALTER TABLE: +--reap + +--echo # Connection 'default'. +connection default; +disconnect con1; +drop tables tm, t1, t2; + + --echo End of 6.0 tests --disable_result_log @@ -2671,3 +2723,7 @@ drop table t1, t2, t3, m1, m2; eval set global storage_engine=$default; --enable_result_log --enable_query_log + +# Check that all connections opened by test cases in this file are really +# gone so execution of other tests won't be affected by their presence. +--source include/wait_until_count_sessions.inc |