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|
#
# Bug#38691 segfault/abort in ``UPDATE ...JOIN'' while
# ``FLUSH TABLES WITH READ LOCK''
# MySQL >= 5.0
#
# Save the initial number of concurrent sessions
--source include/count_sessions.inc
SET @odl_sync_frm = @@global.sync_frm;
SET @@global.sync_frm = OFF;
# Test to see if select will get the lock ahead of low priority update
connect (locker,localhost,root,,);
connect (writer,localhost,root,,);
--connection default
--disable_warnings
DROP TABLE IF EXISTS t1,t2,t3;
--enable_warnings
CREATE TABLE t1 (
a int(11) unsigned default NULL,
b varchar(255) default NULL,
UNIQUE KEY a (a),
KEY b (b)
);
INSERT INTO t1 VALUES (1, 1), (2, 2), (3, 3);
CREATE TABLE t2 SELECT * FROM t1;
CREATE TABLE t3 SELECT * FROM t1;
--echo # test altering of columns that multiupdate doesn't use
--echo # normal mode
--disable_query_log
let $i = 100;
while ($i) {
--dec $i
--connection writer
send UPDATE t2 INNER JOIN (t1 JOIN t3 USING(a)) USING(a)
SET a = NULL WHERE t1.b <> t2.b;
--connection locker
ALTER TABLE t2 ADD COLUMN (c INT);
ALTER TABLE t2 DROP COLUMN c;
--connection writer
--reap
}
--echo # PS mode
--connection writer
PREPARE stmt FROM 'UPDATE t2 INNER JOIN (t1 JOIN t3 USING(a)) USING(a)
SET a = NULL WHERE t1.b <> t2.b';
let $i = 100;
while ($i) {
--dec $i
--connection writer
--send EXECUTE stmt
--connection locker
ALTER TABLE t2 ADD COLUMN (c INT);
ALTER TABLE t2 DROP COLUMN c;
--connection writer
--reap
}
--enable_query_log
--echo # test altering of columns that multiupdate uses
--echo # normal mode
--connection default
--disable_query_log
let $i = 100;
while ($i) {
dec $i;
--connection locker
--error 0,ER_DUP_FIELDNAME
ALTER TABLE t2 ADD COLUMN a int(11) unsigned default NULL;
UPDATE t2 SET a=b;
--connection writer
--send UPDATE t2 INNER JOIN (t1 JOIN t3 USING(a)) USING(a) SET a = NULL WHERE t1.b <> t2.b
--connection locker
--error 0,ER_CANT_DROP_FIELD_OR_KEY
ALTER TABLE t2 DROP COLUMN a;
--connection writer
--error 0,ER_BAD_FIELD_ERROR
--reap
}
--enable_query_log
--echo # PS mode
--disable_query_log
let $i = 100;
while ($i) {
dec $i;
--connection locker
--error 0,ER_DUP_FIELDNAME
ALTER TABLE t2 ADD COLUMN a int(11) unsigned default NULL;
UPDATE t2 SET a=b;
--connection writer
PREPARE stmt FROM 'UPDATE t2 INNER JOIN (t1 JOIN t3 USING(a)) USING(a) SET a = NULL WHERE t1.b <> t2.b';
--send EXECUTE stmt
--connection locker
--error 0,ER_CANT_DROP_FIELD_OR_KEY
ALTER TABLE t2 DROP COLUMN a;
--connection writer
--error 0,ER_BAD_FIELD_ERROR
--reap
}
--enable_query_log
--connection default
DROP TABLE t1, t2, t3;
# Close connections
--disconnect locker
--disconnect writer
SET @@global.sync_frm = @odl_sync_frm;
# Wait till all disconnects are completed
--source include/wait_until_count_sessions.inc
|
