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Details for Bug#43015 main.lock_multi: Weak code (sleeps etc.)
-------------------------------------------------------------
- The fix for bug 42003 already removed a lot of the weaknesses mentioned.
- Tests showed that there are unfortunately no improvements of this tests
in MySQL 5.1 which could be ported back to 5.0.
- Remove a superfluous "--sleep 1" around line 195
Details for Bug#43065 main.lock_multi: This test is too big if the disk is slow
-------------------------------------------------------------------------------
- move the subtests for the bugs 38499 and 36691 into separate scripts
- runtime under excessive parallel I/O load after applying the fix
lock_multi [ pass ] 22887
lock_multi_bug38499 [ pass ] 536926
lock_multi_bug38691 [ pass ] 258498
141 lines
2.7 KiB
Text
141 lines
2.7 KiB
Text
#
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# Bug#38691 segfault/abort in ``UPDATE ...JOIN'' while
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# ``FLUSH TABLES WITH READ LOCK''
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# MySQL >= 5.0
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#
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# Save the initial number of concurrent sessions
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--source include/count_sessions.inc
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# Test to see if select will get the lock ahead of low priority update
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connect (locker,localhost,root,,);
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connect (writer,localhost,root,,);
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--connection default
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--disable_warnings
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DROP TABLE IF EXISTS t1,t2,t3;
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--enable_warnings
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CREATE TABLE t1 (
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a int(11) unsigned default NULL,
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b varchar(255) default NULL,
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UNIQUE KEY a (a),
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KEY b (b)
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);
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INSERT INTO t1 VALUES (1, 1), (2, 2), (3, 3);
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CREATE TABLE t2 SELECT * FROM t1;
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CREATE TABLE t3 SELECT * FROM t1;
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--echo # test altering of columns that multiupdate doesn't use
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--echo # normal mode
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--disable_query_log
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let $i = 100;
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while ($i) {
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--dec $i
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--connection writer
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send UPDATE t2 INNER JOIN (t1 JOIN t3 USING(a)) USING(a)
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SET a = NULL WHERE t1.b <> t2.b;
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--connection locker
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ALTER TABLE t2 ADD COLUMN (c INT);
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ALTER TABLE t2 DROP COLUMN c;
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--connection writer
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--reap
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}
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--echo # PS mode
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--connection writer
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PREPARE stmt FROM 'UPDATE t2 INNER JOIN (t1 JOIN t3 USING(a)) USING(a)
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SET a = NULL WHERE t1.b <> t2.b';
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let $i = 100;
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while ($i) {
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--dec $i
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--connection writer
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--send EXECUTE stmt
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--connection locker
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ALTER TABLE t2 ADD COLUMN (c INT);
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ALTER TABLE t2 DROP COLUMN c;
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--connection writer
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--reap
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}
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--enable_query_log
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--echo # test altering of columns that multiupdate uses
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--echo # normal mode
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--connection default
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--disable_query_log
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let $i = 100;
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while ($i) {
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dec $i;
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--connection locker
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--error 0,ER_DUP_FIELDNAME
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ALTER TABLE t2 ADD COLUMN a int(11) unsigned default NULL;
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UPDATE t2 SET a=b;
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--connection writer
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--send UPDATE t2 INNER JOIN (t1 JOIN t3 USING(a)) USING(a) SET a = NULL WHERE t1.b <> t2.b
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--connection locker
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--error 0,ER_CANT_DROP_FIELD_OR_KEY
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ALTER TABLE t2 DROP COLUMN a;
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--connection writer
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--error 0,ER_BAD_FIELD_ERROR
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--reap
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}
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--enable_query_log
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--echo # PS mode
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--disable_query_log
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let $i = 100;
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while ($i) {
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dec $i;
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--connection locker
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--error 0,ER_DUP_FIELDNAME
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ALTER TABLE t2 ADD COLUMN a int(11) unsigned default NULL;
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UPDATE t2 SET a=b;
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--connection writer
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PREPARE stmt FROM 'UPDATE t2 INNER JOIN (t1 JOIN t3 USING(a)) USING(a) SET a = NULL WHERE t1.b <> t2.b';
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--send EXECUTE stmt
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--connection locker
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--error 0,ER_CANT_DROP_FIELD_OR_KEY
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ALTER TABLE t2 DROP COLUMN a;
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--connection writer
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--error 0,ER_BAD_FIELD_ERROR
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--reap
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}
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--enable_query_log
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--connection default
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DROP TABLE t1, t2, t3;
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# Close connections
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--disconnect locker
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--disconnect writer
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# Wait till all disconnects are completed
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--source include/wait_until_count_sessions.inc
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