mirror of
https://github.com/MariaDB/server.git
synced 2025-01-26 00:34:18 +01:00
2f00b73a4b
If InnoDB is started in innodb_read_only mode such that recovered incomplete transactions exist at startup (but the redo logs are clean), an assertion will fail at shutdown, because there would exist some non-prepared transactions. logs_empty_and_mark_files_at_shutdown(): Do not wait for incomplete transactions to finish if innodb_read_only or innodb_force_recovery>=3. Wait for purge to finish in only one place. trx_sys_close(): Relax the assertion that would fail first. trx_free_prepared(): Also free recovered TRX_STATE_ACTIVE transactions if innodb_read_only or innodb_force_recovery>=3. Also, revert my earlier fix to MySQL 5.7 because this fix is more generic: Bug#20874411 INNODB SHUTDOWN HANGS IF INNODB_FORCE_RECOVERY>=3 SKIPPED ANY ROLLBACK trx_undo_fake_prepared(): Remove. trx_sys_any_active_transactions(): Revert the changes.
36 lines
957 B
Text
36 lines
957 B
Text
connect con1, localhost, root;
|
|
CREATE TABLE t(a INT PRIMARY KEY) ENGINE=InnoDB;
|
|
BEGIN;
|
|
INSERT INTO t VALUES(1),(2);
|
|
DELETE FROM t WHERE a=2;
|
|
connection default;
|
|
# Normal MariaDB shutdown would roll back the above transaction.
|
|
# We want the transaction to remain open, so we will kill the server
|
|
# after ensuring that any non-transactional files are clean.
|
|
FLUSH TABLES;
|
|
# Ensure that the above incomplete transaction becomes durable.
|
|
SET GLOBAL innodb_flush_log_at_trx_commit=1;
|
|
BEGIN;
|
|
INSERT INTO t VALUES(0);
|
|
ROLLBACK;
|
|
# Kill and restart: --innodb-force-recovery=3
|
|
disconnect con1;
|
|
SELECT * FROM t;
|
|
a
|
|
SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
|
|
SELECT * FROM t;
|
|
a
|
|
1
|
|
# Starting with MariaDB 10.2, innodb_read_only implies READ UNCOMMITTED.
|
|
# In earlier versions, this would return the last committed version
|
|
# (empty table)!
|
|
SELECT * FROM t;
|
|
a
|
|
1
|
|
SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
|
|
SELECT * FROM t;
|
|
a
|
|
1
|
|
SELECT * FROM t;
|
|
a
|
|
DROP TABLE t;
|