BUG#28618 (Skipping into the middle of a group with SQL_SLAVE_SKIP_COUNTER

is possible):

When skipping the beginning of a transaction starting with BEGIN, the OPTION_BEGIN
flag was not set correctly, which caused the slave to not recognize that it was
inside a group. This patch sets the OPTION_BEGIN flag for BEGIN, COMMIT, ROLLBACK,
and XID events. It also adds checks if inside a group before decreasing the
slave skip counter to zero.

Begin_query_log_event was not marked that it could not end a group, which is now
corrected.

mysql-test/extra/rpl_tests/rpl_extraSlave_Col.test

@@ -736,7 +736,7 @@ connection slave;
 --replace_result $MASTER_MYPORT MASTER_PORT
 --replace_column 1 # 4 # 7 # 8 # 9 # 16 # 22 # 23 # 33 # 35 # 36 #
 --query_vertical SHOW SLAVE STATUS
-SET GLOBAL SQL_SLAVE_SKIP_COUNTER=2;
+SET GLOBAL SQL_SLAVE_SKIP_COUNTER=1;
 START SLAVE;
 
 --echo *** Try to insert in master ****
@@ -744,6 +744,8 @@ connection master;
 INSERT INTO t15 () VALUES(5,2.00,'Replication Testing',@b1,'Buda',2);
 SELECT * FROM t15 ORDER BY c1;
 
+#SHOW BINLOG EVENTS;
+
 --echo *** Try to select from slave ****
 sync_slave_with_master;
 --replace_column 7 CURRENT_TIMESTAMP

mysql-test/suite/rpl/data/rpl_bug28618.dat

@@ -0,0 +1,3 @@
+1|master only
+2|master only
+3|master only

mysql-test/suite/rpl/r/rpl_slave_skip.result

@@ -142,3 +142,211 @@ Last_SQL_Errno	0
 Last_SQL_Error	
 **** On Master ****
 DROP TABLE t1, t2;
+SET SESSION BINLOG_FORMAT=ROW;
+SET AUTOCOMMIT=0;
+CREATE TABLE t1 (a INT, b VARCHAR(20)) ENGINE=myisam;
+CREATE TABLE t2 (a INT, b VARCHAR(20)) ENGINE=myisam;
+CREATE TABLE t3 (a INT, b VARCHAR(20)) ENGINE=myisam;
+INSERT INTO t1 VALUES (1,'master/slave');
+INSERT INTO t2 VALUES (1,'master/slave');
+INSERT INTO t3 VALUES (1,'master/slave');
+CREATE TRIGGER tr1 AFTER UPDATE on t1 FOR EACH ROW
+BEGIN
+INSERT INTO t2 VALUES (NEW.a,NEW.b);
+DELETE FROM t2 WHERE a < NEW.a;
+END|
+CREATE TRIGGER tr2 AFTER INSERT on t2 FOR EACH ROW
+BEGIN
+UPDATE t3 SET a =2, b = 'master only';
+END|
+**** On Slave ****
+STOP SLAVE;
+**** On Master ****
+UPDATE t1 SET a = 2, b = 'master only' WHERE a = 1;
+DROP TRIGGER tr1;
+DROP TRIGGER tr2;
+INSERT INTO t1 VALUES (3,'master/slave');
+INSERT INTO t2 VALUES (3,'master/slave');
+INSERT INTO t3 VALUES (3,'master/slave');
+SELECT * FROM t1 ORDER BY a;
+a	b
+2	master only
+3	master/slave
+SELECT * FROM t2 ORDER BY a;
+a	b
+2	master only
+3	master/slave
+SELECT * FROM t3 ORDER BY a;
+a	b
+2	master only
+3	master/slave
+*** On Slave ***
+SET GLOBAL SQL_SLAVE_SKIP_COUNTER=1;
+START SLAVE;
+SELECT * FROM t1 ORDER BY a;
+a	b
+1	master/slave
+3	master/slave
+SELECT * FROM t2 ORDER BY a;
+a	b
+1	master/slave
+3	master/slave
+SELECT * FROM t3 ORDER BY a;
+a	b
+1	master/slave
+3	master/slave
+DROP TABLE t1, t2, t3;
+**** Case 2: Row binlog format and transactional tables ****
+*** On Master ***
+CREATE TABLE t4 (a INT, b VARCHAR(20)) ENGINE=innodb;
+CREATE TABLE t5 (a INT, b VARCHAR(20)) ENGINE=innodb;
+CREATE TABLE t6 (a INT, b VARCHAR(20)) ENGINE=innodb;
+**** On Slave ****
+STOP SLAVE;
+*** On Master ***
+BEGIN;
+INSERT INTO t4 VALUES (2, 'master only');
+INSERT INTO t5 VALUES (2, 'master only');
+INSERT INTO t6 VALUES (2, 'master only');
+COMMIT;
+BEGIN;
+INSERT INTO t4 VALUES (3, 'master/slave');
+INSERT INTO t5 VALUES (3, 'master/slave');
+INSERT INTO t6 VALUES (3, 'master/slave');
+COMMIT;
+SELECT * FROM t4 ORDER BY a;
+a	b
+2	master only
+3	master/slave
+SELECT * FROM t5 ORDER BY a;
+a	b
+2	master only
+3	master/slave
+SELECT * FROM t6 ORDER BY a;
+a	b
+2	master only
+3	master/slave
+*** On Slave ***
+SET GLOBAL SQL_SLAVE_SKIP_COUNTER=1;
+START SLAVE;
+SELECT * FROM t4 ORDER BY a;
+a	b
+3	master/slave
+SELECT * FROM t5 ORDER BY a;
+a	b
+3	master/slave
+SELECT * FROM t6 ORDER BY a;
+a	b
+3	master/slave
+**** On Slave ****
+STOP SLAVE;
+*** On Master ***
+BEGIN;
+INSERT INTO t4 VALUES (6, 'master only');
+INSERT INTO t5 VALUES (6, 'master only');
+INSERT INTO t6 VALUES (6, 'master only');
+COMMIT;
+BEGIN;
+INSERT INTO t4 VALUES (7, 'master only');
+INSERT INTO t5 VALUES (7, 'master only');
+INSERT INTO t6 VALUES (7, 'master only');
+COMMIT;
+SELECT * FROM t4 ORDER BY a;
+a	b
+2	master only
+3	master/slave
+6	master only
+7	master only
+SELECT * FROM t5 ORDER BY a;
+a	b
+2	master only
+3	master/slave
+6	master only
+7	master only
+SELECT * FROM t6 ORDER BY a;
+a	b
+2	master only
+3	master/slave
+6	master only
+7	master only
+*** On Slave ***
+SET GLOBAL SQL_SLAVE_SKIP_COUNTER=10;
+START SLAVE;
+SELECT * FROM t4 ORDER BY a;
+a	b
+3	master/slave
+SELECT * FROM t5 ORDER BY a;
+a	b
+3	master/slave
+SELECT * FROM t6 ORDER BY a;
+a	b
+3	master/slave
+STOP SLAVE;
+SET AUTOCOMMIT=0;
+INSERT INTO t4 VALUES (4, 'master only');
+INSERT INTO t5 VALUES (4, 'master only');
+INSERT INTO t6 VALUES (4, 'master only');
+COMMIT;
+INSERT INTO t4 VALUES (5, 'master/slave');
+INSERT INTO t5 VALUES (5, 'master/slave');
+INSERT INTO t6 VALUES (5, 'master/slave');
+COMMIT;
+SELECT * FROM t4 ORDER BY a;
+a	b
+2	master only
+3	master/slave
+4	master only
+5	master/slave
+6	master only
+7	master only
+SELECT * FROM t5 ORDER BY a;
+a	b
+2	master only
+3	master/slave
+4	master only
+5	master/slave
+6	master only
+7	master only
+SELECT * FROM t6 ORDER BY a;
+a	b
+2	master only
+3	master/slave
+4	master only
+5	master/slave
+6	master only
+7	master only
+*** On Slave ***
+SET GLOBAL SQL_SLAVE_SKIP_COUNTER=1;
+START SLAVE;
+SELECT * FROM t4 ORDER BY a;
+a	b
+3	master/slave
+5	master/slave
+SELECT * FROM t5 ORDER BY a;
+a	b
+3	master/slave
+5	master/slave
+SELECT * FROM t6 ORDER BY a;
+a	b
+3	master/slave
+5	master/slave
+DROP TABLE t4, t5, t6;
+**** Case 3: Statement logging format and LOAD DATA with non-transactional table ****
+*** On Master ***
+CREATE TABLE t10 (a INT, b VARCHAR(20)) ENGINE=myisam;
+*** On Slave ***
+STOP SLAVE;
+*** On Master ***
+SET SESSION BINLOG_FORMAT=STATEMENT;
+LOAD DATA INFILE 'MYSQLTEST_VARDIR/tmp/rpl_bug28618.dat' INTO TABLE t10 FIELDS TERMINATED BY '|';
+SELECT * FROM t10 ORDER BY a;
+a	b
+1	master only
+2	master only
+3	master only
+*** On Slave ***
+SET GLOBAL SQL_SLAVE_SKIP_COUNTER=1;
+START SLAVE;
+SELECT * FROM t10 ORDER BY a;
+a	b
+DROP TABLE t10;

mysql-test/suite/rpl/t/rpl_slave_skip-slave.opt

@@ -0,0 +1 @@
+--innodb

mysql-test/suite/rpl/t/rpl_slave_skip.test

@@ -1,7 +1,9 @@
 source include/master-slave.inc;
+source include/have_innodb.inc;
 
 --echo **** On Slave ****
 connection slave;
+source include/have_innodb.inc;
 STOP SLAVE;
 
 --echo **** On Master ****
@@ -69,3 +71,240 @@ query_vertical SHOW SLAVE STATUS;
 connection master;
 DROP TABLE t1, t2;
 sync_slave_with_master;
+
+#
+# More tests for BUG#28618
+#
+# Case 1.
+# ROW binlog format and non-transactional tables.
+# Create the group of events via triggers and try to skip 
+# some items of that group.
+#  
+
+connection master;
+SET SESSION BINLOG_FORMAT=ROW;
+SET AUTOCOMMIT=0;
+
+CREATE TABLE t1 (a INT, b VARCHAR(20)) ENGINE=myisam;
+CREATE TABLE t2 (a INT, b VARCHAR(20)) ENGINE=myisam;
+CREATE TABLE t3 (a INT, b VARCHAR(20)) ENGINE=myisam;
+
+INSERT INTO t1 VALUES (1,'master/slave');
+INSERT INTO t2 VALUES (1,'master/slave');
+INSERT INTO t3 VALUES (1,'master/slave');
+
+DELIMITER |;
+
+CREATE TRIGGER tr1 AFTER UPDATE on t1 FOR EACH ROW
+BEGIN
+  INSERT INTO t2 VALUES (NEW.a,NEW.b);
+  DELETE FROM t2 WHERE a < NEW.a;
+END|
+
+CREATE TRIGGER tr2 AFTER INSERT on t2 FOR EACH ROW
+BEGIN
+  UPDATE t3 SET a =2, b = 'master only';
+END|
+
+DELIMITER ;|
+
+--echo **** On Slave ****
+sync_slave_with_master;
+STOP SLAVE;
+source include/wait_for_slave_to_stop.inc;
+
+--echo **** On Master ****
+connection master;
+UPDATE t1 SET a = 2, b = 'master only' WHERE a = 1;
+DROP TRIGGER tr1;
+DROP TRIGGER tr2;
+INSERT INTO t1 VALUES (3,'master/slave');
+INSERT INTO t2 VALUES (3,'master/slave');
+INSERT INTO t3 VALUES (3,'master/slave');
+
+SELECT * FROM t1 ORDER BY a;
+SELECT * FROM t2 ORDER BY a;
+SELECT * FROM t3 ORDER BY a;
+
+save_master_pos;
+
+--echo *** On Slave ***
+connection slave;
+SET GLOBAL SQL_SLAVE_SKIP_COUNTER=1;
+START SLAVE;
+source include/wait_for_slave_to_start.inc;
+sync_with_master;
+
+SELECT * FROM t1 ORDER BY a;
+SELECT * FROM t2 ORDER BY a;
+SELECT * FROM t3 ORDER BY a;
+
+connection master;
+DROP TABLE t1, t2, t3;
+sync_slave_with_master;
+
+--echo **** Case 2: Row binlog format and transactional tables ****
+
+# Create the transaction and try to skip some
+# queries from one.
+
+--echo *** On Master ***
+connection master;
+CREATE TABLE t4 (a INT, b VARCHAR(20)) ENGINE=innodb;
+CREATE TABLE t5 (a INT, b VARCHAR(20)) ENGINE=innodb;
+CREATE TABLE t6 (a INT, b VARCHAR(20)) ENGINE=innodb;
+
+--echo **** On Slave ****
+sync_slave_with_master;
+STOP SLAVE;
+source include/wait_for_slave_to_stop.inc;
+
+--echo *** On Master ***
+connection master;
+BEGIN;
+INSERT INTO t4 VALUES (2, 'master only');
+INSERT INTO t5 VALUES (2, 'master only');
+INSERT INTO t6 VALUES (2, 'master only');
+COMMIT;
+
+BEGIN;
+INSERT INTO t4 VALUES (3, 'master/slave');
+INSERT INTO t5 VALUES (3, 'master/slave');
+INSERT INTO t6 VALUES (3, 'master/slave');
+COMMIT;
+
+SELECT * FROM t4 ORDER BY a;
+SELECT * FROM t5 ORDER BY a;
+SELECT * FROM t6 ORDER BY a;
+
+save_master_pos;
+
+--echo *** On Slave ***
+connection slave;
+SET GLOBAL SQL_SLAVE_SKIP_COUNTER=1;
+START SLAVE;
+source include/wait_for_slave_to_start.inc;
+sync_with_master;
+
+SELECT * FROM t4 ORDER BY a;
+SELECT * FROM t5 ORDER BY a;
+SELECT * FROM t6 ORDER BY a;
+
+# Test skipping two groups
+
+--echo **** On Slave ****
+connection slave;
+STOP SLAVE;
+source include/wait_for_slave_to_stop.inc;
+
+--echo *** On Master ***
+connection master;
+BEGIN;
+INSERT INTO t4 VALUES (6, 'master only');
+INSERT INTO t5 VALUES (6, 'master only');
+INSERT INTO t6 VALUES (6, 'master only');
+COMMIT;
+
+BEGIN;
+INSERT INTO t4 VALUES (7, 'master only');
+INSERT INTO t5 VALUES (7, 'master only');
+INSERT INTO t6 VALUES (7, 'master only');
+COMMIT;
+
+SELECT * FROM t4 ORDER BY a;
+SELECT * FROM t5 ORDER BY a;
+SELECT * FROM t6 ORDER BY a;
+
+save_master_pos;
+
+--echo *** On Slave ***
+connection slave;
+SET GLOBAL SQL_SLAVE_SKIP_COUNTER=10;
+START SLAVE;
+source include/wait_for_slave_to_start.inc;
+sync_with_master;
+
+SELECT * FROM t4 ORDER BY a;
+SELECT * FROM t5 ORDER BY a;
+SELECT * FROM t6 ORDER BY a;
+
+#
+# And the same, but with autocommit = 0
+#
+connection slave;
+STOP SLAVE;
+source include/wait_for_slave_to_stop.inc;
+
+connection master;
+SET AUTOCOMMIT=0;
+
+INSERT INTO t4 VALUES (4, 'master only');
+INSERT INTO t5 VALUES (4, 'master only');
+INSERT INTO t6 VALUES (4, 'master only');
+COMMIT;
+
+INSERT INTO t4 VALUES (5, 'master/slave');
+INSERT INTO t5 VALUES (5, 'master/slave');
+INSERT INTO t6 VALUES (5, 'master/slave');
+COMMIT;
+
+SELECT * FROM t4 ORDER BY a;
+SELECT * FROM t5 ORDER BY a;
+SELECT * FROM t6 ORDER BY a;
+
+save_master_pos;
+
+--echo *** On Slave ***
+connection slave;
+SET GLOBAL SQL_SLAVE_SKIP_COUNTER=1;
+START SLAVE;
+source include/wait_for_slave_to_start.inc;
+sync_with_master;
+
+SELECT * FROM t4 ORDER BY a;
+SELECT * FROM t5 ORDER BY a;
+SELECT * FROM t6 ORDER BY a;
+
+connection master;
+DROP TABLE t4, t5, t6;
+sync_slave_with_master;
+
+--echo **** Case 3: Statement logging format and LOAD DATA with non-transactional table ****
+
+# LOAD DATA creates two events in binary log for statement binlog format.
+# Try to skip the first.
+
+--echo *** On Master ***
+connection master;
+CREATE TABLE t10 (a INT, b VARCHAR(20)) ENGINE=myisam;
+
+--echo *** On Slave ***
+sync_slave_with_master;
+STOP SLAVE;
+source include/wait_for_slave_to_stop.inc;
+
+--echo *** On Master ***
+connection master;
+SET SESSION BINLOG_FORMAT=STATEMENT;
+exec cp ./suite/rpl/data/rpl_bug28618.dat $MYSQLTEST_VARDIR/tmp/;
+--replace_result $MYSQLTEST_VARDIR MYSQLTEST_VARDIR
+eval LOAD DATA INFILE '$MYSQLTEST_VARDIR/tmp/rpl_bug28618.dat' INTO TABLE t10 FIELDS TERMINATED BY '|';
+remove_file $MYSQLTEST_VARDIR/tmp/rpl_bug28618.dat;
+
+SELECT * FROM t10 ORDER BY a;
+
+save_master_pos;
+
+--echo *** On Slave ***
+connection slave;
+SET GLOBAL SQL_SLAVE_SKIP_COUNTER=1;
+START SLAVE;
+source include/wait_for_slave_to_start.inc;
+sync_with_master;
+
+SELECT * FROM t10 ORDER BY a;
+
+connection master;
+DROP TABLE t10;
+sync_slave_with_master;
+

mysql-test/suite/rpl_ndb/r/rpl_ndb_extraCol.result

@@ -707,7 +707,7 @@ Last_IO_Errno	#
 Last_IO_Error	#
 Last_SQL_Errno	1060
 Last_SQL_Error	Error 'Duplicate column name 'c6'' on query. Default database: 'test'. Query: 'ALTER TABLE t15 ADD COLUMN c6 INT AFTER c5'
-SET GLOBAL SQL_SLAVE_SKIP_COUNTER=2;
+SET GLOBAL SQL_SLAVE_SKIP_COUNTER=1;
 START SLAVE;
 *** Try to insert in master ****
 INSERT INTO t15 () VALUES(5,2.00,'Replication Testing',@b1,'Buda',2);

sql/log_event.cc

@@ -570,7 +570,8 @@ Log_event::do_shall_skip(Relay_log_info *rli)
                       (ulong) server_id, (ulong) ::server_id,
                       rli->replicate_same_server_id,
                       rli->slave_skip_counter));
-  if (server_id == ::server_id && !rli->replicate_same_server_id)
+  if (server_id == ::server_id && !rli->replicate_same_server_id ||
+      rli->slave_skip_counter == 1 && rli->is_in_group())
     return EVENT_SKIP_IGNORE;
   else if (rli->slave_skip_counter > 0)
     return EVENT_SKIP_COUNT;
@@ -1227,6 +1228,16 @@ void Log_event::print_timestamp(IO_CACHE* file, time_t* ts)
 #endif /* MYSQL_CLIENT */
 
 
+#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
+inline Log_event::enum_skip_reason
+Log_event::continue_group(Relay_log_info *rli)
+{
+  if (rli->slave_skip_counter == 1)
+    return Log_event::EVENT_SKIP_IGNORE;
+  return Log_event::do_shall_skip(rli);
+}
+#endif
+
 /**************************************************************************
 	Query_log_event methods
 **************************************************************************/
@@ -2235,6 +2246,30 @@ int Query_log_event::do_update_pos(Relay_log_info *rli)
 }
 
 
+Log_event::enum_skip_reason
+Query_log_event::do_shall_skip(Relay_log_info *rli)
+{
+  DBUG_ENTER("Query_log_event::do_shall_skip");
+  DBUG_PRINT("debug", ("query: %s; q_len: %d", query, q_len));
+  DBUG_ASSERT(query && q_len > 0);
+
+  if (rli->slave_skip_counter > 0)
+  {
+    if (strcmp("BEGIN", query) == 0)
+    {
+      thd->options|= OPTION_BEGIN;
+      DBUG_RETURN(Log_event::continue_group(rli));
+    }
+
+    if (strcmp("COMMIT", query) == 0 || strcmp("ROLLBACK", query) == 0)
+    {
+      thd->options&= ~OPTION_BEGIN;
+      DBUG_RETURN(Log_event::EVENT_SKIP_COUNT);
+    }
+  }
+  DBUG_RETURN(Log_event::do_shall_skip(rli));
+}
+
 #endif
 
 
@@ -3871,10 +3906,7 @@ Intvar_log_event::do_shall_skip(Relay_log_info *rli)
     that we do not change the value of the slave skip counter since it
     will be decreased by the following insert event.
   */
-  if (rli->slave_skip_counter == 1)
+  return continue_group(rli);
-    return Log_event::EVENT_SKIP_IGNORE;
-  else
-    return Log_event::do_shall_skip(rli);
 }
 
 #endif
@@ -3970,10 +4002,7 @@ Rand_log_event::do_shall_skip(Relay_log_info *rli)
     that we do not change the value of the slave skip counter since it
     will be decreased by the following insert event.
   */
-  if (rli->slave_skip_counter == 1)
+  return continue_group(rli);
-    return Log_event::EVENT_SKIP_IGNORE;
-  else
-    return Log_event::do_shall_skip(rli);
 }
 
 #endif /* !MYSQL_CLIENT */
@@ -4049,6 +4078,17 @@ int Xid_log_event::do_apply_event(Relay_log_info const *rli)
                     "COMMIT /* implicit, from Xid_log_event */");
   return end_trans(thd, COMMIT);
 }
+
+Log_event::enum_skip_reason
+Xid_log_event::do_shall_skip(Relay_log_info *rli)
+{
+  DBUG_ENTER("Xid_log_event::do_shall_skip");
+  if (rli->slave_skip_counter > 0) {
+    thd->options&= ~OPTION_BEGIN;
+    DBUG_RETURN(Log_event::EVENT_SKIP_COUNT);
+  }
+  DBUG_RETURN(Log_event::do_shall_skip(rli));
+}
 #endif /* !MYSQL_CLIENT */
 
 
@@ -4427,10 +4467,7 @@ User_var_log_event::do_shall_skip(Relay_log_info *rli)
     that we do not change the value of the slave skip counter since it
     will be decreased by the following insert event.
   */
-  if (rli->slave_skip_counter == 1)
+  return continue_group(rli);
-    return Log_event::EVENT_SKIP_IGNORE;
-  else
-    return Log_event::do_shall_skip(rli);
 }
 #endif /* !MYSQL_CLIENT */
 
@@ -5366,6 +5403,19 @@ int Begin_load_query_log_event::get_create_or_append() const
 #endif /* defined( HAVE_REPLICATION) && !defined(MYSQL_CLIENT) */
 
 
+#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
+Log_event::enum_skip_reason
+Begin_load_query_log_event::do_shall_skip(Relay_log_info *rli)
+{
+  /*
+    If the slave skip counter is 1, then we should not start executing
+    on the next event.
+  */
+  return continue_group(rli);
+}
+#endif
+
+
 /**************************************************************************
 	Execute_load_query_log_event methods
 **************************************************************************/
@@ -6870,10 +6920,7 @@ Table_map_log_event::do_shall_skip(Relay_log_info *rli)
     If the slave skip counter is 1, then we should not start executing
     on the next event.
   */
-  if (rli->slave_skip_counter == 1)
+  return continue_group(rli);
-    return Log_event::EVENT_SKIP_IGNORE;
-  else
-    return Log_event::do_shall_skip(rli);
 }
 
 int Table_map_log_event::do_update_pos(Relay_log_info *rli)

sql/log_event.h

@@ -870,6 +870,25 @@ public:
 
 protected:
 
+  /**
+     Helper function to ignore an event w.r.t. the slave skip counter.
+
+     This function can be used inside do_shall_skip() for functions
+     that cannot end a group. If the slave skip counter is 1 when
+     seeing such an event, the event shall be ignored, the counter
+     left intact, and processing continue with the next event.
+
+     A typical usage is:
+     @code
+     enum_skip_reason do_shall_skip(Relay_log_info *rli) {
+       return continue_group(rli);
+     }
+     @endcode
+
+     @return Skip reason
+   */
+  enum_skip_reason continue_group(Relay_log_info *rli);
+
   /**
     Primitive to apply an event to the database.
 
@@ -1086,6 +1105,7 @@ public:
 
 public:        /* !!! Public in this patch to allow old usage */
 #if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
+  virtual enum_skip_reason do_shall_skip(Relay_log_info *rli);
   virtual int do_apply_event(Relay_log_info const *rli);
   virtual int do_update_pos(Relay_log_info *rli);
 
@@ -1559,6 +1579,7 @@ class Xid_log_event: public Log_event
 private:
 #if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
   virtual int do_apply_event(Relay_log_info const *rli);
+  enum_skip_reason do_shall_skip(Relay_log_info *rli);
 #endif
 };
 
@@ -1937,6 +1958,10 @@ public:
                              *description_event);
   ~Begin_load_query_log_event() {}
   Log_event_type get_type_code() { return BEGIN_LOAD_QUERY_EVENT; }
+private:
+#if !defined(MYSQL_CLIENT) && defined(HAVE_REPLICATION)
+  virtual enum_skip_reason do_shall_skip(Relay_log_info *rli);
+#endif
 };
 
 

sql/rpl_rli.h

@@ -365,6 +365,18 @@ public:
     m_flags |= (1UL << flag);
   }
 
+  /**
+     Get the value of a replication state flag.
+
+     @param flag Flag to get value of
+
+     @return @c true if the flag was set, @c false otherwise.
+   */
+  bool get_flag(enum_state_flag flag)
+  {
+    return m_flags & (1UL << flag);
+  }
+
   /**
      Clear the value of a replication state flag.
 

sql/slave.cc

@@ -1853,10 +1853,13 @@ static int exec_relay_log_event(THD* thd, Relay_log_info* rli)
       // EVENT_SKIP_NOT,
       "not skipped",
       // EVENT_SKIP_IGNORE,
-      "skipped because event originated from this server",
+      "skipped because event should be ignored",
       // EVENT_SKIP_COUNT
       "skipped because event skip counter was non-zero"
     };
+    DBUG_PRINT("info", ("OPTION_BEGIN: %d; IN_STMT: %d",
+                        thd->options & OPTION_BEGIN ? 1 : 0,
+                        rli->get_flag(Relay_log_info::IN_STMT)));
     DBUG_PRINT("skip_event", ("%s event was %s",
                               ev->get_type_str(), explain[reason]));
 #endif