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Bug #38360: BLACKHOLE replication with RBR is broken

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The Blackhole engine did not support row-based replication
since the delete_row(), update_row(), and the index and range
searching functions were not implemented.

This patch adds row-based replication support for the
Blackhole engine by implementing the two functions mentioned
above, and making the engine pretend that it has found the
correct row to delete or update when executed from the slave
SQL thread by implementing index and range searching functions.

It is necessary to only pretend this for the SQL thread, since
a SELECT executed on the Blackhole engine will otherwise never
return EOF, causing a livelock.
This commit is contained in:
Mats Kindahl
2008-10-02 11:02:38 +02:00
parent 969ea5ed32
commit 43fb8633b0
10 changed files with 231 additions and 28 deletions
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11
mysql-test/suite/binlog/r/binlog_multi_engine.result
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@@ -43,8 +43,6 @@ INSERT INTO t1n VALUES (1,1), (1,2), (2,1), (2,2);
UPDATE t1m, t1b SET m = 2, b = 3 WHERE n = c;
UPDATE t1m, t1n SET m = 2, e = 3 WHERE n = f;
ERROR HY000: Binary logging not possible. Message: Statement cannot be written atomically since more than one engine involved and at least one engine is self-logging
UPDATE t1n, t1b SET e = 2, b = 3 WHERE f = c;
ERROR HY000: Binary logging not possible. Message: Statement cannot be written atomically since more than one engine involved and at least one engine is self-logging
TRUNCATE t1m;
TRUNCATE t1b;
TRUNCATE t1n;
@@ -68,20 +66,21 @@ RESET MASTER;
SET SESSION BINLOG_FORMAT=ROW;
INSERT INTO t1m VALUES (1,1), (1,2), (2,1), (2,2);
INSERT INTO t1b VALUES (1,1), (1,2), (2,1), (2,2);
ERROR HY000: Binary logging not possible. Message: Row-based format required for this statement, but not allowed by this combination of engines
INSERT INTO t1n VALUES (1,1), (1,2), (2,1), (2,2);
UPDATE t1m, t1b SET m = 2, b = 3 WHERE n = c;
ERROR HY000: Binary logging not possible. Message: Row-based format required for this statement, but not allowed by this combination of engines
UPDATE t1m, t1n SET m = 2, e = 3 WHERE n = f;
ERROR HY000: Binary logging not possible. Message: Statement cannot be written atomically since more than one engine involved and at least one engine is self-logging
UPDATE t1n, t1b SET e = 2, b = 3 WHERE f = c;
ERROR HY000: Binary logging not possible. Message: Row-based format required for this statement, but not allowed by this combination of engines
ERROR HY000: Binary logging not possible. Message: Statement cannot be written atomically since more than one engine involved and at least one engine is self-logging
show binlog events from <binlog_start>;
Log_name Pos Event_type Server_id End_log_pos Info
master-bin.000001 # Query # # use `test`; BEGIN
master-bin.000001 # Table_map # # table_id: # (test.t1m)
master-bin.000001 # Write_rows # # table_id: # flags: STMT_END_F
master-bin.000001 # Query # # use `test`; COMMIT
master-bin.000001 # Query # # use `test`; BEGIN
master-bin.000001 # Table_map # # table_id: # (test.t1b)
master-bin.000001 # Write_rows # # table_id: # flags: STMT_END_F
master-bin.000001 # Query # # use `test`; COMMIT
master-bin.000001 # Query # # BEGIN
master-bin.000001 # Table_map # # table_id: # (test.t1n)
master-bin.000001 # Table_map # # table_id: # (mysql.ndb_apply_status)