diff options
Diffstat (limited to 'mysql-test/r/lock_multi.result')
| -rw-r--r-- | mysql-test/r/lock_multi.result | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/mysql-test/r/lock_multi.result b/mysql-test/r/lock_multi.result index d1b50a0080c..037b375fe0b 100644 --- a/mysql-test/r/lock_multi.result +++ b/mysql-test/r/lock_multi.result @@ -133,3 +133,58 @@ ALTER TABLE t1 ADD COLUMN a INT; # 2.2.1. normal mode # 2.2.2. PS mode DROP TABLE t1; +create table t1 (a int); +create table t2 like t1; +# con1 +lock tables t1 write; +# con2 +flush tables with read lock; +# con5 +# global read lock is taken +# con3 +select * from t2 for update; +# waiting for release of read lock +# con4 +# would hang and later cause a deadlock +flush tables t2; +# clean up +unlock tables; +unlock tables; +a +drop table t1,t2; +# +# Lightweight version: +# Ensure that the wait for a GRL is done before opening tables. +# +create table t1 (a int); +create table t2 like t1; +# +# UPDATE +# +# default +flush tables with read lock; +# con1 +update t2 set a = 1; +# default +# statement is waiting for release of read lock +# con2 +flush table t2; +# default +unlock tables; +# con1 +# +# LOCK TABLES .. WRITE +# +# default +flush tables with read lock; +# con1 +lock tables t2 write; +# default +# statement is waiting for release of read lock +# con2 +flush table t2; +# default +unlock tables; +# con1 +unlock tables; +drop table t1,t2; |