Fixed spurios failures of rpl_until test.

mysql-test/r/rpl_until.result:
  Fixed race then sometimes io slave thread stopped without managing to get any data from master and sometimes not.
mysql-test/t/rpl_until.test:
  Fixed race then sometimes io slave thread stopped without managing to get any data from master and sometimes not.

mysql-test/r/rpl_until.result

@@ -31,7 +31,7 @@ n
 4
 show slave status;
 Master_Host	Master_User	Master_Port	Connect_retry	Master_Log_File	Read_Master_Log_Pos	Relay_Log_File	Relay_Log_Pos	Relay_Master_Log_File	Slave_IO_Running	Slave_SQL_Running	Replicate_do_db	Replicate_ignore_db	Replicate_do_table	Replicate_ignore_table	Replicate_wild_do_table	Replicate_wild_ignore_table	Last_errno	Last_error	Skip_counter	Exec_master_log_pos	Relay_log_space	Until_condition	Until_Log_File	Until_Log_pos	Master_SSL_Allowed	Master_SSL_CA_File	Master_SSL_CA_Path	Master_SSL_Cert	Master_SSL_Cipher	Master_SSL_Key
-127.0.0.1	root	MASTER_MYPORT	1	master-bin.000001	561	slave-relay-bin.000002	288	master-bin.000001	Yes	No							0		0	244	605	Master	master-bin.000001	244	No					
+127.0.0.1	root	MASTER_MYPORT	1	master-bin.000001	561	slave-relay-bin.000002	332	master-bin.000001	Yes	No							0		0	244	649	Master	master-bin.000001	244	No					
 start slave until master_log_file='master-no-such-bin.000001', master_log_pos=291;
 select * from t1;
 n
@@ -41,21 +41,21 @@ n
 4
 show slave status;
 Master_Host	Master_User	Master_Port	Connect_retry	Master_Log_File	Read_Master_Log_Pos	Relay_Log_File	Relay_Log_Pos	Relay_Master_Log_File	Slave_IO_Running	Slave_SQL_Running	Replicate_do_db	Replicate_ignore_db	Replicate_do_table	Replicate_ignore_table	Replicate_wild_do_table	Replicate_wild_ignore_table	Last_errno	Last_error	Skip_counter	Exec_master_log_pos	Relay_log_space	Until_condition	Until_Log_File	Until_Log_pos	Master_SSL_Allowed	Master_SSL_CA_File	Master_SSL_CA_Path	Master_SSL_Cert	Master_SSL_Cipher	Master_SSL_Key
-127.0.0.1	root	MASTER_MYPORT	1	master-bin.000001	561	slave-relay-bin.000002	288	master-bin.000001	Yes	No							0		0	244	605	Master	master-no-such-bin.000001	291	No					
-start slave until relay_log_file='slave-relay-bin.000002', relay_log_pos=493;
+127.0.0.1	root	MASTER_MYPORT	1	master-bin.000001	561	slave-relay-bin.000002	332	master-bin.000001	Yes	No							0		0	244	649	Master	master-no-such-bin.000001	291	No					
+start slave until relay_log_file='slave-relay-bin.000002', relay_log_pos=537;
 select * from t2;
 n
 1
 2
 show slave status;
 Master_Host	Master_User	Master_Port	Connect_retry	Master_Log_File	Read_Master_Log_Pos	Relay_Log_File	Relay_Log_Pos	Relay_Master_Log_File	Slave_IO_Running	Slave_SQL_Running	Replicate_do_db	Replicate_ignore_db	Replicate_do_table	Replicate_ignore_table	Replicate_wild_do_table	Replicate_wild_ignore_table	Last_errno	Last_error	Skip_counter	Exec_master_log_pos	Relay_log_space	Until_condition	Until_Log_File	Until_Log_pos	Master_SSL_Allowed	Master_SSL_CA_File	Master_SSL_CA_Path	Master_SSL_Cert	Master_SSL_Cipher	Master_SSL_Key
-127.0.0.1	root	MASTER_MYPORT	1	master-bin.000001	561	slave-relay-bin.000002	493	master-bin.000001	Yes	No							0		0	449	605	Relay	slave-relay-bin.000002	493	No					
+127.0.0.1	root	MASTER_MYPORT	1	master-bin.000001	561	slave-relay-bin.000002	537	master-bin.000001	Yes	No							0		0	449	649	Relay	slave-relay-bin.000002	537	No					
 start slave;
 stop slave;
 start slave until master_log_file='master-bin.000001', master_log_pos=561;
 show slave status;
 Master_Host	Master_User	Master_Port	Connect_retry	Master_Log_File	Read_Master_Log_Pos	Relay_Log_File	Relay_Log_Pos	Relay_Master_Log_File	Slave_IO_Running	Slave_SQL_Running	Replicate_do_db	Replicate_ignore_db	Replicate_do_table	Replicate_ignore_table	Replicate_wild_do_table	Replicate_wild_ignore_table	Last_errno	Last_error	Skip_counter	Exec_master_log_pos	Relay_log_space	Until_condition	Until_Log_File	Until_Log_pos	Master_SSL_Allowed	Master_SSL_CA_File	Master_SSL_CA_Path	Master_SSL_Cert	Master_SSL_Cipher	Master_SSL_Key
-127.0.0.1	root	MASTER_MYPORT	1	master-bin.000001	561	slave-relay-bin.000002	605	master-bin.000001	Yes	No							0		0	561	649	Master	master-bin.000001	561	No					
+127.0.0.1	root	MASTER_MYPORT	1	master-bin.000001	561	slave-relay-bin.000002	649	master-bin.000001	Yes	No							0		0	561	693	Master	master-bin.000001	561	No					
 start slave until master_log_file='master-bin', master_log_pos=561;
 ERROR HY000: Wrong parameter or combination of parameters for START SLAVE UNTIL
 start slave until master_log_file='master-bin.000001', master_log_pos=561, relay_log_pos=12;

mysql-test/t/rpl_until.test

@@ -3,8 +3,11 @@ source include/master-slave.inc;
 # prepare version for substitutions
 let $VERSION=`select version()`;
 
-# stop slave before he will start replication
+# stop slave before he will start replication also sync with master
+# for avoiding undetermenistic behaviour
+save_master_pos;
 connection slave;
+sync_with_master;
 stop slave;
 
 connection master;
@@ -37,7 +40,7 @@ sleep 2;
 show slave status;
 
 # try replicate all until second insert to t2;
-start slave until relay_log_file='slave-relay-bin.000002', relay_log_pos=493;
+start slave until relay_log_file='slave-relay-bin.000002', relay_log_pos=537;
 sleep 2;
 select * from t2;
 --replace_result $MASTER_MYPORT MASTER_MYPORT