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Bug #44331 Restore of database with events produces warning in replication

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If an EVENT is created without the DEFINER clause set explicitly or with it set  
to CURRENT_USER, the master and slaves become inconsistent. This issue stems from 
the fact that in both cases, the DEFINER is set to the CURRENT_USER of the current 
thread. On the master, the CURRENT_USER is the mysqld's user, while on the slave,  
the CURRENT_USER is empty for the SQL Thread which is responsible for executing 
the statement.

To fix the problem, we do what follows. If the definer is not set explicitly,  
a DEFINER clause is added when writing the query into binlog; if 'CURRENT_USER' is 
used as the DEFINER, it is replaced with the value of the current user before 
writing to binlog.

mysql-test/suite/rpl/r/rpl_create_if_not_exists.result:
  Updated the result file after fixing bug#44331
mysql-test/suite/rpl/r/rpl_drop_if_exists.result:
  Updated the result file after fixing bug#44331
mysql-test/suite/rpl/r/rpl_events.result:
  Test result of Bug#44331
mysql-test/suite/rpl/r/rpl_innodb_mixed_dml.result:
  Updated the result file after fixing bug#44331
mysql-test/suite/rpl/t/rpl_events.test:
  Added test to verify if the definer is consistent between master and slave
  when the event is created without the DEFINER clause set explicitly or the
  DEFINER is set to CURRENT_USER
sql/events.cc:
  The "create_query_string" function is added to create a new query string 
  for removing executable comments.
sql/sql_yacc.yy:
  The remember_name token was added for recording the offset of EVENT_SYM.
This commit is contained in:
unknown
2009-08-29 16:52:22 +08:00
parent dc7106f5ca
commit f32c08bd0c
7 changed files with 131 additions and 12 deletions
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4
mysql-test/suite/rpl/r/rpl_innodb_mixed_dml.result
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@ -690,7 +690,7 @@ test_rpl e1 root@localhost SYSTEM RECURRING NULL 1 # # NULL ENABLED 1 latin1 lat
USE test_rpl;
SHOW EVENTS;
Db Name Definer Time zone Type Execute at Interval value Interval field Starts Ends Status Originator character_set_client collation_connection Database Collation
test_rpl e1 @ SYSTEM RECURRING NULL 1 # # NULL SLAVESIDE_DISABLED 1 latin1 latin1_swedish_ci latin1_swedish_ci
test_rpl e1 root@localhost SYSTEM RECURRING NULL 1 # # NULL SLAVESIDE_DISABLED 1 latin1 latin1_swedish_ci latin1_swedish_ci
==========MASTER==========
SELECT COUNT(*) FROM t1;
COUNT(*)
@ -1078,7 +1078,7 @@ master-bin.000001 # Query 1 # use `test_rpl`; GRANT EVENT ON *.* TO 'root'@'loca
master-bin.000001 # Query 1 # BEGIN
master-bin.000001 # Query 1 # use `test_rpl`; INSERT INTO t1 VALUES(1, 'test1')
master-bin.000001 # Xid 1 # #
master-bin.000001 # Query 1 # use `test_rpl`; CREATE EVENT e1 ON SCHEDULE EVERY '1' SECOND COMMENT 'e_second_comment' DO DELETE FROM t1
master-bin.000001 # Query 1 # use `test_rpl`; CREATE DEFINER=`root`@`localhost` EVENT e1 ON SCHEDULE EVERY '1' SECOND COMMENT 'e_second_comment' DO DELETE FROM t1
master-bin.000001 # Query 1 # use `test_rpl`; ALTER EVENT e1 RENAME TO e2
master-bin.000001 # Query 1 # use `test_rpl`; DROP EVENT e2
master-bin.000001 # Query 1 # BEGIN