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Non-transactional updates that take place inside a transaction present problems for logging because they are visible to other clients before the transaction is committed, and they are not rolled back even if the transaction is rolled back. It is not always possible to log correctly in statement format when both transactional and non-transactional tables are used in the same transaction. In the current patch, we ensure that such scenario is completely safe under the ROW and MIXED modes.
42 lines
2.3 KiB
Plaintext
42 lines
2.3 KiB
Plaintext
call mtr.add_suppression("Unsafe statement binlogged in statement format since BINLOG_FORMAT = STATEMENT");
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drop table if exists t1, t2, t3;
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CREATE TABLE t1 (m INT, n INT) ENGINE=MYISAM;
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CREATE TABLE t2 (b INT, c INT) ENGINE=BLACKHOLE;
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CREATE TABLE t3 (e INT, f INT) ENGINE=NDB;
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RESET MASTER;
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SET SESSION BINLOG_FORMAT=STATEMENT;
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INSERT INTO t1 VALUES (1,1), (1,2), (2,1), (2,2);
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INSERT INTO t2 VALUES (1,1), (1,2), (2,1), (2,2);
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UPDATE t1, t2 SET m = 2, b = 3 WHERE n = c;
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Warnings:
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Note 1592 Unsafe statement binlogged in statement format since BINLOG_FORMAT = STATEMENT. Reason for unsafeness: Non-transactional reads or writes are unsafe if they occur after transactional reads or writes inside a transaction.
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START TRANSACTION;
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INSERT INTO t3 VALUES (1,1), (1,2), (2,1), (2,2);
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UPDATE t1, t3 SET m = 2, e = 3 WHERE n = f;
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Warnings:
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Note 1592 Unsafe statement binlogged in statement format since BINLOG_FORMAT = STATEMENT. Reason for unsafeness: Non-transactional reads or writes are unsafe if they occur after transactional reads or writes inside a transaction.
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UPDATE t3, t2 SET e = 2, b = 3 WHERE f = c;
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COMMIT;
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show binlog events from <binlog_start>;
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Log_name Pos Event_type Server_id End_log_pos Info
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mysqld-bin.000001 # Query # # BEGIN
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mysqld-bin.000001 # Query # # use `test`; INSERT INTO t1 VALUES (1,1), (1,2), (2,1), (2,2)
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mysqld-bin.000001 # Query # # COMMIT
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mysqld-bin.000001 # Query # # BEGIN
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mysqld-bin.000001 # Query # # use `test`; INSERT INTO t2 VALUES (1,1), (1,2), (2,1), (2,2)
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mysqld-bin.000001 # Query # # COMMIT
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mysqld-bin.000001 # Query # # BEGIN
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mysqld-bin.000001 # Query # # use `test`; UPDATE t1, t2 SET m = 2, b = 3 WHERE n = c
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mysqld-bin.000001 # Query # # COMMIT
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mysqld-bin.000001 # Query # # BEGIN
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mysqld-bin.000001 # Query # # use `test`; INSERT INTO t3 VALUES (1,1), (1,2), (2,1), (2,2)
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mysqld-bin.000001 # Query # # use `test`; UPDATE t1, t3 SET m = 2, e = 3 WHERE n = f
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mysqld-bin.000001 # Query # # use `test`; UPDATE t3, t2 SET e = 2, b = 3 WHERE f = c
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mysqld-bin.000001 # Query # # COMMIT
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mysqld-bin.000001 # Query # # BEGIN
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mysqld-bin.000001 # Table_map # # table_id: # (test.t3)
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mysqld-bin.000001 # Table_map # # table_id: # (mysql.ndb_apply_status)
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mysqld-bin.000001 # Write_rows # # table_id: # flags: STMT_END_F
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mysqld-bin.000001 # Query # # COMMIT
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DROP TABLE t1, t2, t3;
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