mirror of
https://github.com/MariaDB/server.git
synced 2025-08-31 22:22:30 +03:00
3c279d9a5a
The problem was that TRUNCATE TABLE didn't take a exclusive lock on a table if it resorted to truncating via delete of all rows in the table. Specifically for InnoDB tables, this could break proper isolation as InnoDB ends up aborting some granted locks when truncating a table. The solution is to take a exclusive metadata lock before TRUNCATE TABLE can proceed. This guarantees that no other transaction is using the table. Incompatible change: Truncate via delete no longer fails if sql_safe_updates is activated (this was a undocumented side effect).
69 lines
1.7 KiB
Plaintext
69 lines
1.7 KiB
Plaintext
# BUG #36763: TRUNCATE TABLE fails to replicate when stmt-based
|
|
# binlogging is not supported.
|
|
|
|
# This should always be logged as a statement, even when executed as a
|
|
# row-by-row deletion.
|
|
|
|
# $before_truncate A statement to execute (just) before issuing the
|
|
# TRUNCATE TABLE
|
|
|
|
|
|
eval CREATE TABLE t1 (a INT) ENGINE=$engine;
|
|
eval CREATE TABLE t2 (a INT) ENGINE=$engine;
|
|
INSERT INTO t2 VALUES (1),(2),(3);
|
|
let $binlog_start = query_get_value("SHOW MASTER STATUS", Position, 1);
|
|
if (`select length('$before_truncate') > 0`) {
|
|
eval $before_truncate;
|
|
}
|
|
--echo **** Truncate of empty table shall be logged
|
|
TRUNCATE TABLE t1;
|
|
|
|
if (`select length('$before_truncate') > 0`) {
|
|
eval $before_truncate;
|
|
}
|
|
TRUNCATE TABLE t2;
|
|
source include/show_binlog_events.inc;
|
|
|
|
DROP TABLE t1,t2;
|
|
|
|
--echo #
|
|
--echo # Bug#42643: InnoDB does not support replication of TRUNCATE TABLE
|
|
--echo #
|
|
|
|
eval CREATE TABLE t1 (a INT) ENGINE=$engine;
|
|
eval CREATE TABLE t2 (a INT) ENGINE=$engine;
|
|
INSERT INTO t1 VALUES (1),(2);
|
|
|
|
let $binlog_start = query_get_value("SHOW MASTER STATUS", Position, 1);
|
|
if (`select length('$before_truncate') > 0`) {
|
|
eval $before_truncate;
|
|
}
|
|
|
|
--echo # Connection: default
|
|
BEGIN;
|
|
INSERT INTO t2 SELECT * FROM t1;
|
|
|
|
connect (truncate,localhost,root,,);
|
|
--echo # Connection: truncate
|
|
send TRUNCATE TABLE t1;
|
|
|
|
connection default;
|
|
--echo # Connection: default
|
|
INSERT INTO t2 SELECT * FROM t1;
|
|
SELECT COUNT(*) FROM t2;
|
|
COMMIT;
|
|
|
|
connection truncate;
|
|
--echo # Connection: truncate
|
|
--echo # Reaping TRUNCATE TABLE
|
|
--reap
|
|
SELECT COUNT(*) FROM t1;
|
|
SELECT COUNT(*) FROM t2;
|
|
|
|
connection default;
|
|
--echo # Connection: default
|
|
|
|
source include/show_binlog_events.inc;
|
|
disconnect truncate;
|
|
DROP TABLE t1,t2;
|