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

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

mysql-test/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/t/rpl_dual_pos_advance-slave.opt

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

mysql-test/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;
-# connection slave;
-# sync_with_master;
 
-# 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);
 
-# wait_for_slave_to_stop;
+wait_for_slave_to_stop;
 
 # then BUG#13861 causes t3 to show up below (because stopped too
 # late).
 
-# show tables;
+show tables;
 
-# start slave;
+# 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;
+wait_for_slave_to_stop;
+select * from t3;
+
+# ensure that we do not break transaction
+start slave until master_log_file="slave-bin.000001",master_log_pos=663;
+wait_for_slave_to_stop;
+select * from t3;
+
+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;

sql/log_event.cc

@@ -373,6 +373,7 @@ 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;
@@ -405,7 +406,7 @@ 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

@@ -3115,6 +3115,11 @@ int check_expected_error(THD* thd, RELAY_LOG_INFO* rli, int expected_error)
      Check if condition stated in UNTIL clause of START SLAVE is reached.
    SYNOPSYS
      st_relay_log_info::is_until_satisfied()
+     master_beg_pos    position of the beginning of to be executed event
+                       (not log_pos member of the event that points to the
+                        beginning of the following event)
+
+
    DESCRIPTION
      Checks if UNTIL condition is reached. Uses caching result of last 
      comparison of current log file name and target log file name. So cached 
@@ -3139,7 +3144,7 @@ int check_expected_error(THD* thd, RELAY_LOG_INFO* rli, int expected_error)
      false - condition not met
 */
 
-bool st_relay_log_info::is_until_satisfied()
+bool st_relay_log_info::is_until_satisfied(my_off_t master_beg_pos)
 {
   const char *log_name;
   ulonglong log_pos;
@@ -3149,7 +3154,7 @@ bool st_relay_log_info::is_until_satisfied()
   if (until_condition == UNTIL_MASTER_POS)
   {
     log_name= group_master_log_name;
-    log_pos= group_master_log_pos;
+    log_pos= master_beg_pos;
   }
   else
   { /* until_condition == UNTIL_RELAY_POS */
@@ -3228,28 +3233,6 @@ 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);
-    return 1;
-  }
 
   Log_event * ev = next_event(rli);
 
@@ -3266,6 +3249,27 @@ static int exec_relay_log_event(THD* thd, RELAY_LOG_INFO* rli)
     int type_code = ev->get_type_code();
     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((thd->options & OPTION_BEGIN || !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;
+      return 1;
+    }
     /*
       Queries originating from this server must be skipped.
       Low-level events (Format_desc, Rotate, Stop) from this server
@@ -3977,6 +3981,22 @@ 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))

sql/slave.h

@@ -348,7 +348,7 @@ typedef struct st_relay_log_info
   void close_temporary_tables();
 
   /* Check if UNTIL condition is satisfied. See slave.cc for more. */
-  bool is_until_satisfied();
+  bool is_until_satisfied(my_off_t master_beg_pos);
   inline ulonglong until_pos()
   {
     return ((until_condition == UNTIL_MASTER_POS) ? group_master_log_pos :