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WL#5151: Conversion between different types when replicating

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Row-based replication requires the types of columns on the
master and slave to be approximately the same (some safe
conversions between strings are allowed), but does not
allow safe conversions between fields of similar types such
as TINYINT and INT.

This patch implement type conversions between similar fields
on the master and slave.

The conversions are controlled using a new variable
SLAVE_TYPE_CONVERSIONS of type SET('ALL_LOSSY','ALL_NON_LOSSY').

Non-lossy conversions are any conversions that do not run the
risk of losing any information, while lossy conversions can
potentially truncate the value. The column definitions are
checked to decide if the conversion is acceptable.

If neither conversion is enabled, it is required that the
definitions of the columns are identical on master and slave.

Conversion is done by creating an internal conversion table,
unpacking the master data into it, and then copy the data to
the real table on the slave.
This commit is contained in:
Mats Kindahl
2009-12-14 12:04:55 +01:00
parent c7a02cf807
commit c63df11f37
39 changed files with 2893 additions and 464 deletions
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69
mysql-test/suite/rpl/r/rpl_extraCol_innodb.result
View File

@@ -9,6 +9,8 @@ call mtr.add_suppression("Slave: Unknown table 't6' Error_code: 1051");
*** On Slave ***
STOP SLAVE;
RESET SLAVE;
SET @saved_slave_type_conversions = @@slave_type_conversions;
SET GLOBAL SLAVE_TYPE_CONVERSIONS = 'ALL_NON_LOSSY';
CREATE TABLE t1 (a INT, b INT PRIMARY KEY, c CHAR(20),
d FLOAT DEFAULT '2.00',
e CHAR(4) DEFAULT 'TEST')
@@ -32,6 +34,7 @@ a b c d e
1 2 TEXAS 2 TEST
2 1 AUSTIN 2 TEST
3 4 QA 2 TEST
SET GLOBAL SLAVE_TYPE_CONVERSIONS = @saved_slave_type_conversions;
*** Drop t1 ***
DROP TABLE t1;
*** Create t2 on slave ***
@@ -73,8 +76,8 @@ Replicate_Do_Table
Replicate_Ignore_Table #
Replicate_Wild_Do_Table
Replicate_Wild_Ignore_Table
Last_Errno 1535
Last_Error Table definition on master and slave does not match: Column 2 size mismatch - master has size 10, test.t2 on slave has size 6. Master's column size should be <= the slave's column size.
Last_Errno 1641
Last_Error Column 2 of table 'test.t2' cannot be converted from type 'char(10)' to type 'char(5)'
Skip_Counter 0
Exec_Master_Log_Pos #
Relay_Log_Space #
@@ -91,8 +94,8 @@ Seconds_Behind_Master #
Master_SSL_Verify_Server_Cert No
Last_IO_Errno #
Last_IO_Error #
Last_SQL_Errno 1535
Last_SQL_Error Table definition on master and slave does not match: Column 2 size mismatch - master has size 10, test.t2 on slave has size 6. Master's column size should be <= the slave's column size.
Last_SQL_Errno 1641
Last_SQL_Error Column 2 of table 'test.t2' cannot be converted from type 'char(10)' to type 'char(5)'
STOP SLAVE;
RESET SLAVE;
SELECT * FROM t2 ORDER BY a;
@@ -140,8 +143,8 @@ Replicate_Do_Table
Replicate_Ignore_Table #
Replicate_Wild_Do_Table
Replicate_Wild_Ignore_Table
Last_Errno 1535
Last_Error Table definition on master and slave does not match: Column 0 type mismatch - received type 252, test.t3 has type 3
Last_Errno 1641
Last_Error Column 0 of table 'test.t3' cannot be converted from type 'tinyblob' to type 'int(11)'
Skip_Counter 0
Exec_Master_Log_Pos #
Relay_Log_Space #
@@ -158,8 +161,8 @@ Seconds_Behind_Master #
Master_SSL_Verify_Server_Cert No
Last_IO_Errno #
Last_IO_Error #
Last_SQL_Errno 1535
Last_SQL_Error Table definition on master and slave does not match: Column 0 type mismatch - received type 252, test.t3 has type 3
Last_SQL_Errno 1641
Last_SQL_Error Column 0 of table 'test.t3' cannot be converted from type 'tinyblob' to type 'int(11)'
SET GLOBAL SQL_SLAVE_SKIP_COUNTER=2;
START SLAVE;
*** Drop t3 ***
@@ -202,8 +205,8 @@ Replicate_Do_Table
Replicate_Ignore_Table #
Replicate_Wild_Do_Table
Replicate_Wild_Ignore_Table
Last_Errno 1535
Last_Error Table definition on master and slave does not match: Column 0 type mismatch - received type 246, test.t4 has type 3
Last_Errno 1641
Last_Error Column 0 of table 'test.t4' cannot be converted from type 'decimal(8,2)' to type 'int(11)'
Skip_Counter 0
Exec_Master_Log_Pos #
Relay_Log_Space #
@@ -220,8 +223,8 @@ Seconds_Behind_Master #
Master_SSL_Verify_Server_Cert No
Last_IO_Errno #
Last_IO_Error #
Last_SQL_Errno 1535
Last_SQL_Error Table definition on master and slave does not match: Column 0 type mismatch - received type 246, test.t4 has type 3
Last_SQL_Errno 1641
Last_SQL_Error Column 0 of table 'test.t4' cannot be converted from type 'decimal(8,2)' to type 'int(11)'
SET GLOBAL SQL_SLAVE_SKIP_COUNTER=2;
START SLAVE;
*** Drop t4 ***
@@ -264,8 +267,8 @@ Replicate_Do_Table
Replicate_Ignore_Table #
Replicate_Wild_Do_Table
Replicate_Wild_Ignore_Table
Last_Errno 1535
Last_Error Table definition on master and slave does not match: Column 5 type mismatch - received type 4, test.t5 has type 246
Last_Errno 1641
Last_Error Column 1 of table 'test.t5' cannot be converted from type 'varchar(6)' to type 'char(5)'
Skip_Counter 0
Exec_Master_Log_Pos #
Relay_Log_Space #
@@ -282,8 +285,8 @@ Seconds_Behind_Master #
Master_SSL_Verify_Server_Cert No
Last_IO_Errno #
Last_IO_Error #
Last_SQL_Errno 1535
Last_SQL_Error Table definition on master and slave does not match: Column 5 type mismatch - received type 4, test.t5 has type 246
Last_SQL_Errno 1641
Last_SQL_Error Column 1 of table 'test.t5' cannot be converted from type 'varchar(6)' to type 'char(5)'
SET GLOBAL SQL_SLAVE_SKIP_COUNTER=2;
START SLAVE;
*** Drop t5 ***
@@ -325,8 +328,8 @@ Replicate_Do_Table
Replicate_Ignore_Table #
Replicate_Wild_Do_Table
Replicate_Wild_Ignore_Table
Last_Errno 1535
Last_Error Table definition on master and slave does not match: Column 3 type mismatch - received type 16, test.t6 has type 3
Last_Errno 1641
Last_Error Column 1 of table 'test.t6' cannot be converted from type 'varchar(6)' to type 'char(5)'
Skip_Counter 0
Exec_Master_Log_Pos #
Relay_Log_Space #
@@ -343,8 +346,8 @@ Seconds_Behind_Master #
Master_SSL_Verify_Server_Cert No
Last_IO_Errno #
Last_IO_Error #
Last_SQL_Errno 1535
Last_SQL_Error Table definition on master and slave does not match: Column 3 type mismatch - received type 16, test.t6 has type 3
Last_SQL_Errno 1641
Last_SQL_Error Column 1 of table 'test.t6' cannot be converted from type 'varchar(6)' to type 'char(5)'
SET GLOBAL SQL_SLAVE_SKIP_COUNTER=3;
*** Drop t6 ***
DROP TABLE t6;
@@ -493,8 +496,8 @@ Replicate_Do_Table
Replicate_Ignore_Table #
Replicate_Wild_Do_Table
Replicate_Wild_Ignore_Table
Last_Errno 1535
Last_Error Table definition on master and slave does not match: Column 2 type mismatch - received type 254, test.t10 has type 5
Last_Errno 1641
Last_Error Column 2 of table 'test.t10' cannot be converted from type 'char(5)' to type 'double'
Skip_Counter 0
Exec_Master_Log_Pos #
Relay_Log_Space #
@@ -511,8 +514,8 @@ Seconds_Behind_Master #
Master_SSL_Verify_Server_Cert No
Last_IO_Errno #
Last_IO_Error #
Last_SQL_Errno 1535
Last_SQL_Error Table definition on master and slave does not match: Column 2 type mismatch - received type 254, test.t10 has type 5
Last_SQL_Errno 1641
Last_SQL_Error Column 2 of table 'test.t10' cannot be converted from type 'char(5)' to type 'double'
SET GLOBAL SQL_SLAVE_SKIP_COUNTER=2;
START SLAVE;
*** Drop t10 ***
@@ -520,7 +523,7 @@ DROP TABLE t10;
*** Create t11 on slave ***
STOP SLAVE;
RESET SLAVE;
CREATE TABLE t11 (a INT KEY, b BLOB, f TEXT,
CREATE TABLE t11 (a INT KEY, b BLOB, f INT,
c CHAR(5) DEFAULT 'test', e INT DEFAULT '1')ENGINE='InnoDB';
*** Create t11 on Master ***
CREATE TABLE t11 (a INT PRIMARY KEY, b BLOB, c VARCHAR(254)
@@ -554,8 +557,8 @@ Replicate_Do_Table
Replicate_Ignore_Table #
Replicate_Wild_Do_Table
Replicate_Wild_Ignore_Table
Last_Errno 1535
Last_Error Table definition on master and slave does not match: Column 2 type mismatch - received type 15, test.t11 has type 252
Last_Errno 1641
Last_Error Column 2 of table 'test.t11' cannot be converted from type 'varchar(254)' to type 'int(11)'
Skip_Counter 0
Exec_Master_Log_Pos #
Relay_Log_Space #
@@ -572,8 +575,8 @@ Seconds_Behind_Master #
Master_SSL_Verify_Server_Cert No
Last_IO_Errno #
Last_IO_Error #
Last_SQL_Errno 1535
Last_SQL_Error Table definition on master and slave does not match: Column 2 type mismatch - received type 15, test.t11 has type 252
Last_SQL_Errno 1641
Last_SQL_Error Column 2 of table 'test.t11' cannot be converted from type 'varchar(254)' to type 'int(11)'
SET GLOBAL SQL_SLAVE_SKIP_COUNTER=2;
START SLAVE;
*** Drop t11 ***
@@ -944,8 +947,8 @@ Replicate_Do_Table
Replicate_Ignore_Table #
Replicate_Wild_Do_Table
Replicate_Wild_Ignore_Table
Last_Errno 1535
Last_Error Table definition on master and slave does not match: Column 0 type mismatch - received type 8, test.t17 has type 2
Last_Errno 1641
Last_Error Column 0 of table 'test.t17' cannot be converted from type 'bigint' to type 'smallint(6)'
Skip_Counter 0
Exec_Master_Log_Pos #
Relay_Log_Space #
@@ -962,8 +965,8 @@ Seconds_Behind_Master #
Master_SSL_Verify_Server_Cert No
Last_IO_Errno #
Last_IO_Error #
Last_SQL_Errno 1535
Last_SQL_Error Table definition on master and slave does not match: Column 0 type mismatch - received type 8, test.t17 has type 2
Last_SQL_Errno 1641
Last_SQL_Error Column 0 of table 'test.t17' cannot be converted from type 'bigint' to type 'smallint(6)'
SET GLOBAL SQL_SLAVE_SKIP_COUNTER=2;
START SLAVE;
** DROP table t17 ***