WL#3171: Dynamic logging format

  Removed error on seeing table map event when slave is in SBR mode
  and switching temporarily to RBR mode to replicate the rows.


sql/log_event.cc:
  Settig binlog format to "row" on seeing a table map event.
  Resetting binlog format on error and seeing STMT_END_F.
sql/sql_class.h:
  Adding method to unconditially set binlog format to "row".
mysql-test/r/rpl_rbr_to_sbr.result:
  New BitKeeper file ``mysql-test/r/rpl_rbr_to_sbr.result''
mysql-test/t/rpl_rbr_to_sbr.test:
  New BitKeeper file ``mysql-test/t/rpl_rbr_to_sbr.test''

mysql-test/r/rpl_rbr_to_sbr.result

+stop slave;
+drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
+reset master;
+reset slave;
+drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
+start slave;
+SET BINLOG_FORMAT=MIXED;
+SELECT @@GLOBAL.BINLOG_FORMAT, @@SESSION.BINLOG_FORMAT;
+@@GLOBAL.BINLOG_FORMAT	@@SESSION.BINLOG_FORMAT
+STATEMENT	MIXED
+SET GLOBAL BINLOG_FORMAT=MIXED;
+SELECT @@GLOBAL.BINLOG_FORMAT, @@SESSION.BINLOG_FORMAT;
+@@GLOBAL.BINLOG_FORMAT	@@SESSION.BINLOG_FORMAT
+MIXED	MIXED
+**** On Master ****
+CREATE TABLE t1 (a INT, b LONG);
+INSERT INTO t1 VALUES (1,1), (2,2);
+INSERT INTO t1 VALUES (3,UUID()), (4,UUID());
+SHOW BINLOG EVENTS;
+Log_name	Pos	Event_type	Server_id	End_log_pos	Info
+master-bin.000001	4	Format_desc	1	102	Server ver: 5.1.8-beta-debug-log, Binlog ver: 4
+master-bin.000001	102	Query	1	196	use `test`; CREATE TABLE t1 (a INT, b LONG)
+master-bin.000001	196	Query	1	293	use `test`; INSERT INTO t1 VALUES (1,1), (2,2)
+master-bin.000001	293	Table_map	1	333	test.t1
+master-bin.000001	333	Write_rows	1	450	
+**** On Slave ****
+SHOW SLAVE STATUS;
+Slave_IO_State	#
+Master_Host	127.0.0.1
+Master_User	root
+Master_Port	MASTER_PORT
+Connect_Retry	1
+Master_Log_File	master-bin.000001
+Read_Master_Log_Pos	450
+Relay_Log_File	#
+Relay_Log_Pos	#
+Relay_Master_Log_File	master-bin.000001
+Slave_IO_Running	Yes
+Slave_SQL_Running	Yes
+Replicate_Do_DB	
+Replicate_Ignore_DB	
+Replicate_Do_Table	
+Replicate_Ignore_Table	
+Replicate_Wild_Do_Table	
+Replicate_Wild_Ignore_Table	
+Last_Errno	0
+Last_Error	
+Skip_Counter	0
+Exec_Master_Log_Pos	450
+Relay_Log_Space	#
+Until_Condition	None
+Until_Log_File	
+Until_Log_Pos	0
+Master_SSL_Allowed	No
+Master_SSL_CA_File	
+Master_SSL_CA_Path	
+Master_SSL_Cert	
+Master_SSL_Cipher	
+Master_SSL_Key	
+Seconds_Behind_Master	#
+SHOW BINLOG EVENTS;
+Log_name	Pos	Event_type	Server_id	End_log_pos	Info
+slave-bin.000001	4	Format_desc	2	102	Server ver: 5.1.8-beta-debug-log, Binlog ver: 4
+slave-bin.000001	102	Query	2	212	use `test`; drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9
+slave-bin.000001	212	Query	1	306	use `test`; CREATE TABLE t1 (a INT, b LONG)
+slave-bin.000001	306	Query	1	403	use `test`; INSERT INTO t1 VALUES (1,1), (2,2)
+slave-bin.000001	403	Table_map	1	443	test.t1
+slave-bin.000001	443	Write_rows	1	560	
+DROP TABLE IF EXISTS t1;

mysql-test/t/rpl_rbr_to_sbr.test

+-- source include/have_binlog_format_statement.inc
+-- source include/master-slave.inc
+
+# Test that the slave temporarily switches to ROW when seeing binrow
+# events when it is in STATEMENT or MIXED mode
+
+SET BINLOG_FORMAT=MIXED;
+SELECT @@GLOBAL.BINLOG_FORMAT, @@SESSION.BINLOG_FORMAT;
+SET GLOBAL BINLOG_FORMAT=MIXED;
+SELECT @@GLOBAL.BINLOG_FORMAT, @@SESSION.BINLOG_FORMAT;
+
+--echo **** On Master ****
+CREATE TABLE t1 (a INT, b LONG);
+INSERT INTO t1 VALUES (1,1), (2,2);
+INSERT INTO t1 VALUES (3,UUID()), (4,UUID());
+SHOW BINLOG EVENTS;
+sync_slave_with_master;
+--echo **** On Slave ****
+--replace_result $MASTER_MYPORT MASTER_PORT
+--replace_column 1 # 8 # 9 # 23 # 33 #
+--query_vertical SHOW SLAVE STATUS
+SHOW BINLOG EVENTS;
+
+--exec $MYSQL_DUMP --compact --order-by-primary --skip-extended-insert --no-create-info test > $MYSQLTEST_VARDIR/tmp/rpl_rbr_to_sbr_master.sql
+--exec $MYSQL_DUMP_SLAVE --compact --order-by-primary --skip-extended-insert --no-create-info test > $MYSQLTEST_VARDIR/tmp/rpl_rbr_to_sbr_slave.sql
+
+connection master;
+DROP TABLE IF EXISTS t1;
+
+# Let's compare. Note: If they match test will pass, if they do not match
+# the test will show that the diff statement failed and not reject file
+# will be created. You will need to go to the mysql-test dir and diff
+# the files your self to see what is not matching
+
+--exec diff $MYSQLTEST_VARDIR/tmp/rpl_rbr_to_sbr_master.sql $MYSQLTEST_VARDIR/tmp/rpl_rbr_to_sbr_slave.sql;
+
+# If all is good, we can remove the files
+
+system rm $MYSQLTEST_VARDIR/tmp/rpl_rbr_to_sbr_master.sql;
+system rm $MYSQLTEST_VARDIR/tmp/rpl_rbr_to_sbr_slave.sql;

sql/log_event.cc

@@ -5452,6 +5452,7 @@ int Rows_log_event::exec_event(st_relay_log_info *rli)
       For now we code, knowing that error is not skippable and so slave SQL
       thread is certainly going to stop.
     */
+    thd->reset_current_stmt_binlog_row_based();
     rli->cleanup_context(thd, 1);
     thd->query_error= 1;
     DBUG_RETURN(error);
@@ -5495,6 +5496,7 @@ int Rows_log_event::exec_event(st_relay_log_info *rli)
       event flushed.
     */
 
+    thd->reset_current_stmt_binlog_row_based();
     rli->cleanup_context(thd, 0);
     rli->transaction_end(thd);
 
@@ -5856,24 +5858,14 @@ int Table_map_log_event::exec_event(st_relay_log_info *rli)
       (!rpl_filter->is_on() || rpl_filter->tables_ok("", &table_list)))
   {
     /*
-      TODO: Mats will soon change this test below so that a SBR slave always
-      accepts RBR events from the master (and binlogs them RBR).
+      Check if the slave is set to use SBR.  If so, it should switch
+      to using RBR until the end of the "statement", i.e., next
+      STMT_END_F or next error.
     */
-    /*
-      Check if the slave is set to use SBR.  If so, the slave should
-      stop immediately since it is not possible to daisy-chain from
-      RBR to SBR.  Once RBR is used, the rest of the chain has to use
-      RBR.
-    */
-    if (mysql_bin_log.is_open() && (thd->options & OPTION_BIN_LOG) &&
-        !thd->current_stmt_binlog_row_based)
+    if (!thd->current_stmt_binlog_row_based &&
+        mysql_bin_log.is_open() && (thd->options & OPTION_BIN_LOG))
     {
-      slave_print_msg(ERROR_LEVEL, rli, ER_BINLOG_ROW_RBR_TO_SBR,
-                      "It is not possible to use statement-based binlogging "
-                      "on a slave that replicates row-based.  Please use "
-                      "--binrow-format=row on slave if you want to use "
-                      "--log-slave-updates and read row-based binlog events.");
-      DBUG_RETURN(ERR_RBR_TO_SBR);
+      thd->set_current_stmt_binlog_row_based();
     }
 
     /*

sql/sql_class.h

@@ -1387,6 +1387,10 @@ class THD :public Statement,
     if (variables.binlog_format == BINLOG_FORMAT_MIXED)
       current_stmt_binlog_row_based= 1;
   }
+  inline void set_current_stmt_binlog_row_based()
+  {
+    current_stmt_binlog_row_based= 1;
+  }
   inline void reset_current_stmt_binlog_row_based()
   {
     current_stmt_binlog_row_based= test(variables.binlog_format == BINLOG_FORMAT_ROW);