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74e4da489e
This patch adds the ability to store extra field metadata in the table map event. This data can include pack_length() or field_lenght() for fields such as CHAR or VARCHAR enabling developers to add code that can check for compatibilty between master and slave columns. More importantly, the extra field metadata can be used to store data from the master correctly should a VARCHAR field on the master be <= 255 bytes while the same field on the slave is > 255 bytes. ' The patch also includes the needed changes to unpack to ensure that data which is smaller on the master can be unpacked correctly on the slave.
67 lines
2.1 KiB
Text
67 lines
2.1 KiB
Text
stop slave;
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drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
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reset master;
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reset slave;
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drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
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start slave;
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SET BINLOG_FORMAT=MIXED;
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SET GLOBAL BINLOG_FORMAT=MIXED;
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SELECT @@GLOBAL.BINLOG_FORMAT, @@SESSION.BINLOG_FORMAT;
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@@GLOBAL.BINLOG_FORMAT @@SESSION.BINLOG_FORMAT
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MIXED MIXED
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**** On Master ****
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CREATE TABLE t1 (a INT, b LONG);
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INSERT INTO t1 VALUES (1,1), (2,2);
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INSERT INTO t1 VALUES (3,UUID()), (4,UUID());
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SHOW BINLOG EVENTS;
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Log_name Pos Event_type Server_id End_log_pos Info
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master-bin.000001 # Format_desc 1 # Server ver: VERSION, Binlog ver: 4
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master-bin.000001 # Query 1 # use `test`; CREATE TABLE t1 (a INT, b LONG)
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master-bin.000001 # Query 1 # use `test`; INSERT INTO t1 VALUES (1,1), (2,2)
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master-bin.000001 # Table_map 1 # table_id: # (test.t1)
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master-bin.000001 # Write_rows 1 # table_id: # flags: STMT_END_F
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**** On Slave ****
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SHOW SLAVE STATUS;
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Slave_IO_State #
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Master_Host 127.0.0.1
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Master_User root
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Master_Port MASTER_PORT
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Connect_Retry 1
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Master_Log_File master-bin.000001
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Read_Master_Log_Pos 457
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Relay_Log_File #
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Relay_Log_Pos #
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Relay_Master_Log_File master-bin.000001
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Slave_IO_Running Yes
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Slave_SQL_Running Yes
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Replicate_Do_DB
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Replicate_Ignore_DB
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Replicate_Do_Table
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Replicate_Ignore_Table
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Replicate_Wild_Do_Table
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Replicate_Wild_Ignore_Table
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Last_Errno 0
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Last_Error
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Skip_Counter 0
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Exec_Master_Log_Pos 457
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Relay_Log_Space #
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Until_Condition None
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Until_Log_File
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Until_Log_Pos 0
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Master_SSL_Allowed No
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Master_SSL_CA_File
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Master_SSL_CA_Path
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Master_SSL_Cert
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Master_SSL_Cipher
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Master_SSL_Key
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Seconds_Behind_Master #
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Master_SSL_Verify_Server_Cert No
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SHOW BINLOG EVENTS;
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Log_name Pos Event_type Server_id End_log_pos Info
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slave-bin.000001 # Format_desc 2 # Server ver: VERSION, Binlog ver: 4
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slave-bin.000001 # Query 2 # use `test`; drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9
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slave-bin.000001 # Query 1 # use `test`; CREATE TABLE t1 (a INT, b LONG)
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slave-bin.000001 # Query 1 # use `test`; INSERT INTO t1 VALUES (1,1), (2,2)
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slave-bin.000001 # Table_map 1 # table_id: # (test.t1)
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slave-bin.000001 # Write_rows 1 # table_id: # flags: STMT_END_F
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DROP TABLE IF EXISTS t1;
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