Last part of fix for BUG#7998 "Replication should be more clever about when to...

Last part of fix for BUG#7998 "Replication should be more clever about when to replicate RELEASE_LOCK()" + fixes after merge

mysql-test/r/drop_temp_table.result

@@ -18,5 +18,4 @@ master-bin.000001	#	Query	1	#	use `drop-temp+table-test`; create temporary table
 master-bin.000001	#	Query	1	#	use `drop-temp+table-test`; create temporary table `table:name` (a int)
 master-bin.000001	#	Query	1	#	use `drop-temp+table-test`; create temporary table shortn2 (a int)
 master-bin.000001	#	Query	1	#	use `drop-temp+table-test`; DROP /*!40005 TEMPORARY */ TABLE IF EXISTS `drop-temp+table-test`.`shortn2`,`drop-temp+table-test`.`table:name`,`drop-temp+table-test`.`shortn1`
-master-bin.000001	#	Query	1	#	use `drop-temp+table-test`; DO RELEASE_LOCK("a")
 drop database `drop-temp+table-test`;

mysql-test/r/mix_innodb_myisam_binlog.result

@@ -93,7 +93,6 @@ master-bin.000001	96	Query	1	#	use `test`; BEGIN
 master-bin.000001	165	Query	1	#	use `test`; insert into t1 values(8)
 master-bin.000001	253	Query	1	#	use `test`; insert into t2 select * from t1
 master-bin.000001	348	Query	1	#	use `test`; ROLLBACK
-master-bin.000001	420	Query	1	#	use `test`; DO RELEASE_LOCK("a")
 delete from t1;
 delete from t2;
 reset master;

mysql-test/r/rpl000001.result

@@ -33,27 +33,12 @@ select sum(length(word)) from t1;
 sum(length(word))
 1022
 drop table t1,t3;
+create table t1 (n int) engine=myisam;
 reset master;
 stop slave;
 reset slave;
-create table t1(n int);
-select get_lock("hold_slave",10);
-get_lock("hold_slave",10)
-1
-explain extended select get_lock("hold_slave",10);
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
-Warnings:
-Note	1003	select sql_no_cache get_lock(_latin1'hold_slave',10) AS `get_lock("hold_slave",10)`
+lock tables t1 read;
 start slave;
-select release_lock("hold_slave");
-release_lock("hold_slave")
-1
-explain extended select release_lock("hold_slave");
-id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
-1	SIMPLE	NULL	NULL	NULL	NULL	NULL	NULL	NULL	No tables used
-Warnings:
-Note	1003	select sql_no_cache release_lock(_latin1'hold_slave') AS `release_lock("hold_slave")`
 unlock tables;
 create table t2(id int);
 insert into t2 values(connection_id());

mysql-test/r/rpl_change_master.result

@@ -4,26 +4,20 @@ reset master;
 reset slave;
 drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9;
 start slave;
-select get_lock("a",5);
-get_lock("a",5)
-1
 create table t1(n int);
-insert into t1 values(1+get_lock("a",15)*0);
-insert into t1 values(2);
-stop slave;
 select * from t1;
 n
-1
+stop slave sql_thread;
+insert into t1 values(1);
+insert into t1 values(2);
+stop slave;
 show slave status;
 Slave_IO_State	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	Seconds_Behind_Master
-#	127.0.0.1	root	MASTER_MYPORT	1	master-bin.000001	377	#	#	master-bin.000001	No	No							0		0	289	#	None		0	No						#
+#	127.0.0.1	root	MASTER_MYPORT	1	master-bin.000001	358	#	#	master-bin.000001	No	No							0		0	182	#	None		0	No						#
 change master to master_user='root';
 show slave status;
 Slave_IO_State	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	Seconds_Behind_Master
-#	127.0.0.1	root	MASTER_MYPORT	1	master-bin.000001	289	#	#	master-bin.000001	No	No							0		0	289	#	None		0	No						#
-select release_lock("a");
-release_lock("a")
-1
+#	127.0.0.1	root	MASTER_MYPORT	1	master-bin.000001	182	#	#	master-bin.000001	No	No							0		0	182	#	None		0	No						#
 start slave;
 select * from t1;
 n

mysql-test/r/rpl_deadlock.result

@@ -11,13 +11,13 @@ create table t4 (a int) engine=innodb;
 show create table t1;
 Table	Create Table
 t1	CREATE TABLE `t1` (
-  `a` int(11) NOT NULL default '0',
+  `a` int(11) NOT NULL,
   KEY `a` (`a`)
 ) ENGINE=InnoDB DEFAULT CHARSET=latin1
 show create table t2;
 Table	Create Table
 t2	CREATE TABLE `t2` (
-  `a` int(11) NOT NULL default '0',
+  `a` int(11) NOT NULL,
   KEY `a` (`a`)
 ) ENGINE=InnoDB DEFAULT CHARSET=latin1
 stop slave;
@@ -39,9 +39,9 @@ a
 22
 show slave status;
 Slave_IO_State	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	Seconds_Behind_Master
-#	127.0.0.1	root	MASTER_MYPORT	1	master-bin.000001	13110	#	#	master-bin.000001	Yes	Yes							0		0	13110	#	None		0	No						#
+#	127.0.0.1	root	MASTER_MYPORT	1	master-bin.000001	19116	#	#	master-bin.000001	Yes	Yes							0		0	19116	#	None		0	No						#
 stop slave;
-change master to master_log_pos=401;
+change master to master_log_pos=534;
 begin;
 select * from t2 for update;
 a
@@ -57,10 +57,10 @@ a
 22
 show slave status;
 Slave_IO_State	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	Seconds_Behind_Master
-#	127.0.0.1	root	MASTER_MYPORT	1	master-bin.000001	13110	#	#	master-bin.000001	Yes	Yes							0		0	13110	#	None		0	No						#
+#	127.0.0.1	root	MASTER_MYPORT	1	master-bin.000001	19116	#	#	master-bin.000001	Yes	Yes							0		0	19116	#	None		0	No						#
 set global max_relay_log_size=0;
 stop slave;
-change master to master_log_pos=401;
+change master to master_log_pos=534;
 begin;
 select * from t2 for update;
 a
@@ -77,5 +77,5 @@ a
 22
 show slave status;
 Slave_IO_State	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	Seconds_Behind_Master
-#	127.0.0.1	root	MASTER_MYPORT	1	master-bin.000001	13110	#	#	master-bin.000001	Yes	Yes							0		0	13110	#	None		0	No						#
+#	127.0.0.1	root	MASTER_MYPORT	1	master-bin.000001	19116	#	#	master-bin.000001	Yes	Yes							0		0	19116	#	None		0	No						#
 drop table t1,t2;

mysql-test/t/rpl000001.test

@@ -39,7 +39,13 @@ save_master_pos;
 connection slave;
 sync_with_master;
 
-#test handling of aborted connection in the middle of update
+# Test if the slave SQL thread can be more than 16K behind the slave
+# I/O thread (> IO_SIZE)
+
+connection master;
+# we'll use table-level locking to delay slave SQL thread
+create table t1 (n int) engine=myisam;
+sync_slave_with_master;
 connection master;
 reset master;
 connection slave;
@@ -47,29 +53,26 @@ stop slave;
 reset slave;
 
 connection master;
-create table t1(n int);
-#we want the log to exceed 16K to test deal with the log that is bigger than
-#IO_SIZE
 let $1=5000;
+# Generate 16K of relay log
 disable_query_log;
 while ($1)
 {
- eval insert into t1 values($1+get_lock("hold_slave",10)*0);
+ eval insert into t1 values($1);
  dec $1;
 }
 enable_query_log;
 
-# Try to cause a large relay log lag on the slave 
+# Try to cause a large relay log lag on the slave by locking t1
 connection slave;
-select get_lock("hold_slave",10);
-explain extended select get_lock("hold_slave",10);
+lock tables t1 read;
 start slave;
 #hope this is long enough for I/O thread to fetch over 16K relay log data
 sleep 3;
-select release_lock("hold_slave");
-explain extended select release_lock("hold_slave");
 unlock tables;
 
+#test handling of aborted connection in the middle of update
+
 connection master;
 create table t2(id int);
 insert into t2 values(connection_id());

mysql-test/t/rpl_change_master.test

+# Verify that after CHANGE MASTER, replication (I/O thread and SQL
+# thread) restart from where SQL thread left, not from where
+# I/O thread left (some old bug fixed in 4.0.17)
+
 source include/master-slave.inc;
 
-connection slave;
-select get_lock("a",5);
 connection master;
+# Make SQL slave thread advance a bit
 create table t1(n int);
-insert into t1 values(1+get_lock("a",15)*0);
+sync_slave_with_master;
+select * from t1;
+# Now stop it and make I/O slave thread be ahead
+stop slave sql_thread;
+connection master;
+insert into t1 values(1);
 insert into t1 values(2);
 save_master_pos;
 connection slave;
---real_sleep 3; # can't sync_with_master as we should be blocked
+--real_sleep 3; # wait for I/O thread to have read updates
 stop slave;
-select * from t1;
 --replace_result $MASTER_MYPORT MASTER_MYPORT
 --replace_column 1 # 8 # 9 # 23 # 33 #
 show slave status;
@@ -18,8 +25,6 @@ change master to master_user='root';
 --replace_result $MASTER_MYPORT MASTER_MYPORT
 --replace_column 1 # 8 # 9 # 23 # 33 #
 show slave status;
-# Will restart from after the values(2), which is bug
-select release_lock("a");
 start slave;
 sync_with_master;
 select * from t1;

mysql-test/t/rpl_deadlock.test

@@ -68,7 +68,7 @@ show slave status;
 # 2) Test lock wait timeout
 
 stop slave;
-change master to master_log_pos=401; # the BEGIN log event
+change master to master_log_pos=534; # the BEGIN log event
 begin;
 select * from t2 for update; # hold lock
 start slave;
@@ -89,7 +89,7 @@ set global max_relay_log_size=0;
 
 # This is really copy-paste of 2) of above
 stop slave;
-change master to master_log_pos=401;
+change master to master_log_pos=534;
 begin;
 select * from t2 for update;
 start slave;

mysql-test/t/rpl_get_lock.test

@@ -22,6 +22,13 @@ connection slave;
 sync_with_master;
 select get_lock("lock",3);
 select * from t1;
+# There is no point in testing REPLICATIION of the IS_*_LOCK
+# functions; slave does not run with the same concurrency context as
+# master (generally in slave we can't know that on master this lock
+# was already held by another connection and so that the the
+# get_lock() we're replicating timed out on master hence returned 0,
+# or that the is_free_lock() we're playing returned 0 etc.
+# But here all we do is test these functions outside of replication.
 select is_free_lock("lock"), is_used_lock("lock") = connection_id();
 explain extended select is_free_lock("lock"), is_used_lock("lock");
 # Check lock functions