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526a0cecda
replication): Patch to add binlog format capabilities to the InnoDB storage engine. The engine will not allow statement format logging when in READ COMMITTED or READ UNCOMMITTED transaction isolation level. In addition, an error is generated when trying to use READ COMMITTED or READ UNCOMMITTED transaction isolation level in STATEMENT binlog mode.
115 lines
4.6 KiB
Plaintext
115 lines
4.6 KiB
Plaintext
SET BINLOG_FORMAT=MIXED;
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RESET MASTER;
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CREATE TABLE t1 (a INT PRIMARY KEY, b INT) ENGINE=INNODB;
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INSERT INTO t1 VALUES (1,1),(2,2),(3,3),(4,4),(5,5),(6,6);
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BEGIN;
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SET SESSION TRANSACTION ISOLATION LEVEL REPEATABLE READ;
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UPDATE t1 SET b = 2*a WHERE a > 1;
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COMMIT;
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BEGIN;
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SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED;
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UPDATE t1 SET b = a * a WHERE a > 3;
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COMMIT;
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SET BINLOG_FORMAT=STATEMENT;
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BEGIN;
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SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
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UPDATE t1 SET b = 1*a WHERE a > 1;
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ERROR HY000: Logging not possible. Message: InnoDB: Transaction level 'READ-UNCOMMITTED' is not safe for binlog mode 'STATEMENT'
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COMMIT;
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BEGIN;
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SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED;
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UPDATE t1 SET b = 2*a WHERE a > 2;
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ERROR HY000: Logging not possible. Message: InnoDB: Transaction level 'READ-COMMITTED' is not safe for binlog mode 'STATEMENT'
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COMMIT;
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BEGIN;
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SET SESSION TRANSACTION ISOLATION LEVEL REPEATABLE READ;
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UPDATE t1 SET b = 3*a WHERE a > 3;
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COMMIT;
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BEGIN;
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SET SESSION TRANSACTION ISOLATION LEVEL SERIALIZABLE;
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UPDATE t1 SET b = 4*a WHERE a > 4;
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COMMIT;
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SET BINLOG_FORMAT=MIXED;
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BEGIN;
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SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
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UPDATE t1 SET b = 1*a WHERE a > 1;
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COMMIT;
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BEGIN;
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SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED;
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UPDATE t1 SET b = 2*a WHERE a > 2;
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COMMIT;
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BEGIN;
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SET SESSION TRANSACTION ISOLATION LEVEL REPEATABLE READ;
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UPDATE t1 SET b = 3*a WHERE a > 3;
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COMMIT;
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BEGIN;
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SET SESSION TRANSACTION ISOLATION LEVEL SERIALIZABLE;
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UPDATE t1 SET b = 4*a WHERE a > 4;
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COMMIT;
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SET BINLOG_FORMAT=ROW;
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BEGIN;
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SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED;
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UPDATE t1 SET b = 1*a WHERE a > 1;
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COMMIT;
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BEGIN;
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SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED;
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UPDATE t1 SET b = 2*a WHERE a > 2;
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COMMIT;
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BEGIN;
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SET SESSION TRANSACTION ISOLATION LEVEL REPEATABLE READ;
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UPDATE t1 SET b = 3*a WHERE a > 3;
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COMMIT;
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BEGIN;
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SET SESSION TRANSACTION ISOLATION LEVEL SERIALIZABLE;
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UPDATE t1 SET b = 4*a WHERE a > 4;
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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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master-bin.000001 # Query # # use `test`; CREATE TABLE t1 (a INT PRIMARY KEY, b INT) ENGINE=INNODB
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master-bin.000001 # Query # # use `test`; INSERT INTO t1 VALUES (1,1),(2,2),(3,3),(4,4),(5,5),(6,6)
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master-bin.000001 # Xid # # COMMIT /* XID */
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master-bin.000001 # Query # # use `test`; BEGIN
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master-bin.000001 # Query # # use `test`; UPDATE t1 SET b = 2*a WHERE a > 1
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master-bin.000001 # Xid # # COMMIT /* XID */
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master-bin.000001 # Query # # use `test`; BEGIN
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master-bin.000001 # Table_map # # table_id: # (test.t1)
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master-bin.000001 # Update_rows # # table_id: # flags: STMT_END_F
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master-bin.000001 # Xid # # COMMIT /* XID */
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master-bin.000001 # Query # # use `test`; BEGIN
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master-bin.000001 # Query # # use `test`; UPDATE t1 SET b = 3*a WHERE a > 3
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master-bin.000001 # Xid # # COMMIT /* XID */
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master-bin.000001 # Query # # use `test`; BEGIN
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master-bin.000001 # Query # # use `test`; UPDATE t1 SET b = 4*a WHERE a > 4
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master-bin.000001 # Xid # # COMMIT /* XID */
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master-bin.000001 # Query # # use `test`; BEGIN
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master-bin.000001 # Table_map # # table_id: # (test.t1)
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master-bin.000001 # Update_rows # # table_id: # flags: STMT_END_F
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master-bin.000001 # Xid # # COMMIT /* XID */
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master-bin.000001 # Query # # use `test`; BEGIN
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master-bin.000001 # Table_map # # table_id: # (test.t1)
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master-bin.000001 # Update_rows # # table_id: # flags: STMT_END_F
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master-bin.000001 # Xid # # COMMIT /* XID */
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master-bin.000001 # Query # # use `test`; BEGIN
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master-bin.000001 # Query # # use `test`; UPDATE t1 SET b = 3*a WHERE a > 3
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master-bin.000001 # Xid # # COMMIT /* XID */
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master-bin.000001 # Query # # use `test`; BEGIN
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master-bin.000001 # Query # # use `test`; UPDATE t1 SET b = 4*a WHERE a > 4
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master-bin.000001 # Xid # # COMMIT /* XID */
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master-bin.000001 # Query # # use `test`; BEGIN
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master-bin.000001 # Table_map # # table_id: # (test.t1)
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master-bin.000001 # Update_rows # # table_id: # flags: STMT_END_F
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master-bin.000001 # Xid # # COMMIT /* XID */
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master-bin.000001 # Query # # use `test`; BEGIN
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master-bin.000001 # Table_map # # table_id: # (test.t1)
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master-bin.000001 # Update_rows # # table_id: # flags: STMT_END_F
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master-bin.000001 # Xid # # COMMIT /* XID */
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master-bin.000001 # Query # # use `test`; BEGIN
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master-bin.000001 # Table_map # # table_id: # (test.t1)
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master-bin.000001 # Update_rows # # table_id: # flags: STMT_END_F
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master-bin.000001 # Xid # # COMMIT /* XID */
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master-bin.000001 # Query # # use `test`; BEGIN
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master-bin.000001 # Table_map # # table_id: # (test.t1)
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master-bin.000001 # Update_rows # # table_id: # flags: STMT_END_F
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master-bin.000001 # Xid # # COMMIT /* XID */
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DROP TABLE t1;
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