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47 lines
1.3 KiB
Text
47 lines
1.3 KiB
Text
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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INSERT INTO t VALUES(2);
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DELETE FROM t WHERE a=2;
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connect con2, localhost, root;
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# Normal MariaDB shutdown would roll back the above transaction.
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# We want the transaction to remain open, so we will kill the server
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# after ensuring that any non-transactional files are clean.
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FLUSH TABLES;
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# Create another transaction that will be recovered as COMMITTED.
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BEGIN;
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SET DEBUG_SYNC='after_trx_committed_in_memory SIGNAL committed WAIT_FOR ever';
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COMMIT;
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connection default;
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SET DEBUG_SYNC='now WAIT_FOR committed';
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# Ensure that the above incomplete 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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ROLLBACK;
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disconnect con1;
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disconnect con2;
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SELECT * FROM t;
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a
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1
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SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
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SELECT * FROM t;
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a
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1
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UPDATE t SET a=3 WHERE a=1;
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# Starting with MariaDB 10.2, innodb_read_only implies READ UNCOMMITTED.
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# In earlier versions, this would return the last committed version
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# (empty table)!
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SELECT * FROM t;
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a
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3
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SET TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
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SELECT * FROM t;
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a
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3
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SELECT * FROM t;
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a
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3
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DROP TABLE t;
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FOUND 1 /Rolled back recovered transaction [^0]/ in mysqld.1.err
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