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-rw-r--r--mysql-test/t/innodb_bug38231.test15
1 files changed, 15 insertions, 0 deletions
diff --git a/mysql-test/t/innodb_bug38231.test b/mysql-test/t/innodb_bug38231.test
index 54f58844c42..1611cb56203 100644
--- a/mysql-test/t/innodb_bug38231.test
+++ b/mysql-test/t/innodb_bug38231.test
@@ -27,6 +27,21 @@ SET autocommit=0;
-- send
LOCK TABLE bug38231 WRITE;
+# When con1 does UNLOCK below this will release either con2 or con3 which are
+# both waiting on LOCK. At the end we must first --reap and UNLOCK the
+# connection that has been released, otherwise it will wait forever. We assume
+# that the released connection will be the first one that has gained the LOCK,
+# thus we force the order here - con2 does LOCK first, then con3. In other
+# words we wait for LOCK from con2 above to be exected before doing LOCK in
+# con3.
+-- connection con1
+let $wait_condition =
+ SELECT COUNT(*) = 1 FROM information_schema.processlist
+ WHERE info = 'LOCK TABLE bug38231 WRITE';
+-- source include/wait_condition.inc
+# the above enables query log, re-disable it
+-- disable_query_log
+
-- connection con3
SET autocommit=0;
-- send