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MDEV-29433 innodb.lock_delete_updated is unstable

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Use suspend thread syncpoint instead of include/wait_condition.inc to
make sure DELETE created waiting lock before the next UPDATE begins
locking.

This is backport of commit 0fa4dd0747
from 10.6.
This commit is contained in:
Vlad Lesin
2022-09-01 09:55:49 +03:00
parent 04899d6d91
commit 43745b7e17
2 changed files with 8 additions and 8 deletions
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4
mysql-test/suite/innodb/r/lock_delete_updated.result
View File

@ -1,11 +1,12 @@
CREATE TABLE t(a INT PRIMARY KEY) ENGINE=InnoDB;
INSERT INTO t VALUES (3);
BEGIN;
connection default;
UPDATE t SET a = 2;
connect con1,localhost,root;
SET DEBUG_SYNC="lock_wait_suspend_thread_enter SIGNAL del_locked";
DELETE FROM t;
connection default;
SET DEBUG_SYNC="now WAIT_FOR del_locked";
UPDATE t SET a = 1;
COMMIT;
connection con1;
@ -17,4 +18,5 @@ connection default;
SELECT count(*) FROM t;
count(*)
1
SET DEBUG_SYNC="reset";
DROP TABLE t;

12
mysql-test/suite/innodb/t/lock_delete_updated.test
View File

@ -1,23 +1,20 @@
--source include/have_innodb.inc
--source include/count_sessions.inc
--source include/have_debug.inc
--source include/have_debug_sync.inc
CREATE TABLE t(a INT PRIMARY KEY) ENGINE=InnoDB;
INSERT INTO t VALUES (3);
BEGIN;
connection default;
UPDATE t SET a = 2;
connect con1,localhost,root;
SET DEBUG_SYNC="lock_wait_suspend_thread_enter SIGNAL del_locked";
send DELETE FROM t;
connection default;
let $wait_condition=
select count(*) = 1 from information_schema.processlist
where state = "Updating" and info = "DELETE FROM t";
--source include/wait_condition.inc
SET DEBUG_SYNC="now WAIT_FOR del_locked";
UPDATE t SET a = 1;
COMMIT;
@ -30,5 +27,6 @@ connection default;
--echo # The above DELETE must delete all the rows in the table, so the
--echo # following SELECT must show 0 rows.
SELECT count(*) FROM t;
SET DEBUG_SYNC="reset";
DROP TABLE t;
--source include/wait_until_count_sessions.inc