Commit 9f00125a authored by sasha@mysql.sashanet.com's avatar sasha@mysql.sashanet.com
Browse files

test case for low priority updates race bug 

not yet fixed
parent 2d1a6434

mysql-test/r/lock.result

+2 −0
Original line number Diff line number Diff line
@@ -4,3 +4,5 @@ Table Op Msg_type Msg_text 
test.t1	check	status	OK

Table	Op	Msg_type	Msg_text

test.t2	check	error	Table 't2' was not locked with LOCK TABLES

n

1

mysql-test/t/lock.test

+22 −0
Original line number Diff line number Diff line
@@ -53,3 +53,25 @@ lock tables t1 write; 
check table t2;

unlock tables;

drop table t1,t2;



#test to see if select will get the lock ahead of low priority update

connect (locker,localhost,root,,);

connect (reader,localhost,root,,);

connect (writer,localhost,root,,);



connection locker;

create table t1(n int);

insert into t1 values (1);

lock tables t1 write;

connection writer;

send update low_priority t1 set n = 4;

connection reader;

send select n from t1;

connection locker;

unlock tables;

connection writer;

reap;

connection reader;

reap;

drop table t1;