Merge mysql.com:/home/svoj/devel/mysql/BUG13861/mysql-5.0-engines

into  mysql.com:/home/svoj/devel/mysql/BUG13861/mysql-5.1-engines


mysql-test/suite/rpl/r/rpl_dual_pos_advance.result:
  Auto merged
sql/log_event.cc:
  Auto merged
sql/slave.h:
  Use local.
mysql-test/suite/rpl/t/rpl_dual_pos_advance.test:
  Manual merge.
sql/slave.cc:
  Manual merge.

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

@@ -8,15 +8,56 @@ reset master;
 change master to master_host="127.0.0.1",master_port=SLAVE_PORT,master_user="root";
 start slave;
 create table t1 (n int);
+stop slave;
+create table t2 (n int);
+show tables;
+Tables_in_test
+t1
+t2
+create table t3 (n int) engine=innodb;
+set @a=1;
+insert into t3 values(@a);
+begin;
+insert into t3 values(2);
+insert into t3 values(3);
+commit;
+insert into t3 values(4);
+start slave until master_log_file="slave-bin.000001",master_log_pos=195;
+Warnings:
+Note	1278	It is recommended to use --skip-slave-start when doing step-by-step replication with START SLAVE UNTIL; otherwise, you will get problems if you get an unexpected slave's mysqld restart
+select master_pos_wait("slave-bin.000001",137);
+master_pos_wait("slave-bin.000001",137)
+0
+show tables;
+Tables_in_test
+t1
+t2
+start slave until master_log_file="slave-bin.000001",master_log_pos=438;
+Warnings:
+Note	1278	It is recommended to use --skip-slave-start when doing step-by-step replication with START SLAVE UNTIL; otherwise, you will get problems if you get an unexpected slave's mysqld restart
+select * from t3;
+n
+1
+start slave until master_log_file="slave-bin.000001",master_log_pos=663;
+Warnings:
+Note	1278	It is recommended to use --skip-slave-start when doing step-by-step replication with START SLAVE UNTIL; otherwise, you will get problems if you get an unexpected slave's mysqld restart
+select * from t3;
+n
+1
+2
+3
+start slave;
 create table t4 (n int);
 create table t5 (n int);
 create table t6 (n int);
 show tables;
 Tables_in_test
 t1
+t2
+t3
 t4
 t5
 t6
 stop slave;
 reset slave;
-drop table t1,t4,t5,t6;
+drop table t1,t2,t3,t4,t5,t6;

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

@@ -7,6 +7,7 @@
 # It also will test BUG#13861.
 
 source include/master-slave.inc;
+source include/have_innodb.inc;
 
 
 # set up "dual head"
@@ -30,45 +31,64 @@ save_master_pos;
 connection master;
 sync_with_master;
 
-# Now test BUG#13861. This will be enabled when Guilhem fixes this
-# bug.
+#
+# BUG#13861 - START SLAVE UNTIL may stop 1 evnt too late if
+#             log-slave-updates and circul repl
+#
+stop slave;
 
-# stop slave
+create table t2 (n int); # create one ignored event
 
-# create table t2 (n int); # create one ignored event
+save_master_pos;
+connection slave;
+sync_with_master;
 
-# save_master_pos;
-# connection slave;
-# sync_with_master;
+connection slave;
 
-# connection slave;
+show tables;
 
-# show tables;
+save_master_pos;
 
-# save_master_pos;
+create table t3 (n int) engine=innodb;
+set @a=1;
+insert into t3 values(@a);
+begin;
+insert into t3 values(2);
+insert into t3 values(3);
+commit;
+insert into t3 values(4);
 
-# create table t3 (n int);
 
-# connection master;
+connection master;
 
 # bug is that START SLAVE UNTIL may stop too late, we test that by
 # asking it to stop before creation of t3.
 
-# start slave until master_log_file="slave-bin.000001",master_log_pos=195;
+start slave until master_log_file="slave-bin.000001",master_log_pos=195;
 
 # wait until it's started (the position below is the start of "CREATE
 # TABLE t2") (otherwise wait_for_slave_to_stop may return at once)
 
-# select master_pos_wait("slave-bin.000001",137);
+select master_pos_wait("slave-bin.000001",137);
 
-# --source include/wait_for_slave_to_stop.inc
+--source include/wait_for_slave_to_stop.inc
 
 # then BUG#13861 causes t3 to show up below (because stopped too
 # late).
 
-# show tables;
+show tables;
+
+# ensure that we do not break set @a=1; insert into t3 values(@a);
+start slave until master_log_file="slave-bin.000001",master_log_pos=438;
+--source include/wait_for_slave_to_stop.inc
+select * from t3;
+
+# ensure that we do not break transaction
+start slave until master_log_file="slave-bin.000001",master_log_pos=663;
+--source include/wait_for_slave_to_stop.inc
+select * from t3;
 
-# start slave;
+start slave;
 
 # BUG#13023 is that Exec_master_log_pos may stay too low "forever":
 
@@ -99,7 +119,7 @@ show tables;
 
 stop slave;
 reset slave;
-drop table t1,t4,t5,t6; # add t2 and t3 later
+drop table t1,t2,t3,t4,t5,t6;
 
 save_master_pos;
 connection slave;

mysql-test/t/rpl_dual_pos_advance-slave.opt

+--innodb

sql/log_event.cc

@@ -603,6 +603,7 @@ Log_event::Log_event(const char* buf,
 #endif
   when = uint4korr(buf);
   server_id = uint4korr(buf + SERVER_ID_OFFSET);
+  data_written= uint4korr(buf + EVENT_LEN_OFFSET);
   if (description_event->binlog_version==1)
   {
     log_pos= 0;
@@ -635,7 +636,7 @@ Log_event::Log_event(const char* buf,
         binlog, so which will cause problems if the user uses this value
         in CHANGE MASTER).
       */
-    log_pos+= uint4korr(buf + EVENT_LEN_OFFSET);
+    log_pos+= data_written;
   }
   DBUG_PRINT("info", ("log_pos: %lu", (ulong) log_pos));
 

sql/slave.cc

@@ -1971,28 +1971,6 @@ static int exec_relay_log_event(THD* thd, Relay_log_info* rli)
      wait for something for example inside of next_event().
    */
   pthread_mutex_lock(&rli->data_lock);
-  /*
-    This tests if the position of the end of the last previous executed event
-    hits the UNTIL barrier.
-    We would prefer to test if the position of the start (or possibly) end of
-    the to-be-read event hits the UNTIL barrier, this is different if there
-    was an event ignored by the I/O thread just before (BUG#13861 to be
-    fixed).
-  */
-  if (rli->until_condition!=Relay_log_info::UNTIL_NONE &&
-      rli->is_until_satisfied())
-  {
-    char buf[22];
-    sql_print_information("Slave SQL thread stopped because it reached its"
-                    " UNTIL position %s", llstr(rli->until_pos(), buf));
-    /*
-      Setting abort_slave flag because we do not want additional message about
-      error in query execution to be printed.
-    */
-    rli->abort_slave= 1;
-    pthread_mutex_unlock(&rli->data_lock);
-    DBUG_RETURN(1);
-  }
 
   Log_event * ev = next_event(rli);
 
@@ -2006,7 +1984,30 @@ static int exec_relay_log_event(THD* thd, Relay_log_info* rli)
   }
   if (ev)
   {
-    int exec_res= apply_event_and_update_pos(ev, thd, rli, TRUE);
+    int exec_res;
+
+    /*
+      This tests if the position of the beginning of the current event
+      hits the UNTIL barrier.
+    */
+    if (rli->until_condition != RELAY_LOG_INFO::UNTIL_NONE &&
+        rli->is_until_satisfied((rli->is_in_group() || !ev->log_pos) ?
+                                rli->group_master_log_pos :
+                                ev->log_pos - ev->data_written))
+    {
+      char buf[22];
+      sql_print_information("Slave SQL thread stopped because it reached its"
+                            " UNTIL position %s", llstr(rli->until_pos(), buf));
+      /*
+        Setting abort_slave flag because we do not want additional message about
+        error in query execution to be printed.
+      */
+      rli->abort_slave= 1;
+      pthread_mutex_unlock(&rli->data_lock);
+      delete ev;
+      DBUG_RETURN(1);
+    }
+    exec_res= apply_event_and_update_pos(ev, thd, rli, TRUE);
 
     /*
       Format_description_log_event should not be deleted because it will be
@@ -2642,6 +2643,22 @@ Slave SQL thread aborted. Can't execute init_slave query");
     }
   }
 
+  /*
+    First check until condition - probably there is nothing to execute. We
+    do not want to wait for next event in this case.
+  */
+  pthread_mutex_lock(&rli->data_lock);
+  if (rli->until_condition != RELAY_LOG_INFO::UNTIL_NONE &&
+      rli->is_until_satisfied(rli->group_master_log_pos))
+  {
+    char buf[22];
+    sql_print_information("Slave SQL thread stopped because it reached its"
+                          " UNTIL position %s", llstr(rli->until_pos(), buf));
+    pthread_mutex_unlock(&rli->data_lock);
+    goto err;
+  }
+  pthread_mutex_unlock(&rli->data_lock);
+
   /* Read queries from the IO/THREAD until this thread is killed */
 
   while (!sql_slave_killed(thd,rli))