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-rw-r--r--mysql-test/t/lock_multi.test26
1 files changed, 26 insertions, 0 deletions
diff --git a/mysql-test/t/lock_multi.test b/mysql-test/t/lock_multi.test
index 0d36b79df78..c73ebab056e 100644
--- a/mysql-test/t/lock_multi.test
+++ b/mysql-test/t/lock_multi.test
@@ -439,4 +439,30 @@ connection default;
disconnect flush;
drop table t1;
+#
+# Bug#30331: Table_locks_waited shows inaccurate values
+#
+
+--disable_warnings
+drop table if exists t1,t2;
+--enable_warnings
+
+create table t1 (a int);
+flush status;
+lock tables t1 read;
+show status like 'Table_locks_waited';
+connect (waiter,localhost,root,,);
+connection waiter;
+--send insert into t1 values(1);
+connection default;
+let $wait_condition=
+ select count(*) = 1 from information_schema.processlist
+ where state = "Locked" and info = "insert into t1 values(1)";
+--source include/wait_condition.inc
+drop table t1;
+disconnect waiter;
+connection default;
+show status like 'Table_locks_waited';
+#show global status like "Table_locks_waited";
+
--echo End of 5.1 tests