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033e29b6a1
trx_t::commit_in_memory(): Do not initiate a redo log write if the transaction has no visible effect. If anything for this transaction had been made durable, crash recovery will roll back the transaction just fine even if the end of ROLLBACK is not durably written. Rollbacks of transactions that are associated with XA identifiers (possibly internally via the binlog) will always be persisted. The test rpl.rpl_gtid_crash covers this.
89 lines
3.1 KiB
Plaintext
89 lines
3.1 KiB
Plaintext
--source include/have_innodb.inc
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--source include/have_debug.inc
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--source include/have_debug_sync.inc
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# need to restart server
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--source include/not_embedded.inc
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--disable_query_log
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# Ignore messages from the innodb_force_recovery=5 startup.
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call mtr.add_suppression("\\[ERROR\\] InnoDB: Failed to find tablespace for table `test`\\.`t` in the cache");
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call mtr.add_suppression("\\[Warning\\] InnoDB: Allocated tablespace ID.* for test/t, old maximum was 0");
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FLUSH TABLES;
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--enable_query_log
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--connect(con1, localhost, root)
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CREATE TABLE t(a INT PRIMARY KEY) ENGINE=InnoDB;
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INSERT INTO t VALUES(1);
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BEGIN;
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# Generate insert_undo log.
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INSERT INTO t VALUES(2);
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# Generate update_undo log.
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UPDATE t SET a=20 WHERE a=2;
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--connect(con2, localhost, root)
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--echo # Normal MariaDB shutdown would roll back the above transaction.
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--echo # We want the transaction to remain open, so we will kill the server
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--echo # after ensuring that any non-transactional files are clean.
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FLUSH TABLES;
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--echo # Create another transaction that will be recovered as COMMITTED.
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BEGIN;
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# Generate multiple pages of both insert_undo and update_undo, so that
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# the state TRX_UNDO_CACHE will not be chosen.
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--disable_query_log
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let $n= 10000;
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while ($n) {
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dec $n;
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eval INSERT INTO t VALUES(-$n);
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eval DELETE FROM t WHERE a=-$n;
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}
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--enable_query_log
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SET DEBUG_SYNC='after_trx_committed_in_memory SIGNAL committed WAIT_FOR ever';
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send COMMIT;
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connection default;
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SET DEBUG_SYNC='now WAIT_FOR committed';
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--echo # Ensure that the above transactions become durable.
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SET GLOBAL innodb_flush_log_at_trx_commit=1;
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BEGIN;
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INSERT INTO t VALUES(-10000);
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DELETE FROM t WHERE a=-10000;
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COMMIT;
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--let $restart_parameters= --innodb-force-recovery=3
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--let $shutdown_timeout= 0
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--source include/restart_mysqld.inc
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--let $shutdown_timeout= 30
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--disconnect con1
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--disconnect con2
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SELECT * FROM t;
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SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
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SELECT * FROM t;
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# refused on MySQL 5.6, MariaDB 10.0, 10.1, but not MariaDB 10.2+
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UPDATE t SET a=3 WHERE a=1;
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--let $restart_parameters= --innodb-read-only
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--source include/restart_mysqld.inc
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SET GLOBAL innodb_status_output= @@GLOBAL.innodb_status_output;
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--echo # Starting with MariaDB 10.2, innodb_read_only implies READ UNCOMMITTED.
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--echo # In earlier versions, this would return the last committed version
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--echo # (only a=3; no record for a=20)!
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SELECT * FROM t;
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SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
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SELECT * FROM t;
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--let $restart_parameters= --innodb-force-recovery=5
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--source include/restart_mysqld.inc
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--echo #
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--echo # MDEV-15418 innodb_force_recovery=5 displays bogus warnings
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--echo # about too new transaction identifier
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--echo #
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--echo # With the fix, innodb_force_recovery=5 implies READ UNCOMMITTED.
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SELECT * FROM t;
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SET TRANSACTION ISOLATION LEVEL SERIALIZABLE;
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SELECT * FROM t;
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SET TRANSACTION ISOLATION LEVEL READ COMMITTED;
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SELECT * FROM t;
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--let $restart_parameters=
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--source include/restart_mysqld.inc
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SELECT * FROM t;
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DROP TABLE t;
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let SEARCH_FILE= $MYSQLTEST_VARDIR/log/mysqld.1.err;
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--let SEARCH_PATTERN= Rolled back recovered transaction [^0]
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--source include/search_pattern_in_file.inc
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