MDEV-20122: With MASTER_USE_GTID=current_pos, slave's I/O thread only checks gtid_current_pos when thread is first startedbb-10.6-sujatha

Deprecate master_use_gtid=current_pos

27 files changed, 110 insertions, 0 deletions

diff --git a/mysql-test/suite/binlog_encryption/rpl_gtid_basic.result b/mysql-test/suite/binlog_encryption/rpl_gtid_basic.result
index 4e17669605f..15384207f63 100644
--- a/mysql-test/suite/binlog_encryption/rpl_gtid_basic.result
+++ b/mysql-test/suite/binlog_encryption/rpl_gtid_basic.result
@@ -69,6 +69,8 @@ INSERT INTO t2 VALUES (5, "i1a");
 connection server_4;
 CHANGE MASTER TO master_host = '127.0.0.1', master_port = MASTER_PORT,
 MASTER_USE_GTID=CURRENT_POS;
+Warnings:
+Warning	1681	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
 include/start_slave.inc
 SELECT * FROM t1 ORDER BY a;
 a	b
@@ -89,6 +91,8 @@ connection server_2;
 include/stop_slave.inc
 CHANGE MASTER TO master_host = '127.0.0.1', master_port = SERVER_MYPORT_4,
 MASTER_USE_GTID=CURRENT_POS;
+Warnings:
+Warning	1681	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
 include/start_slave.inc
 connection server_4;
 UPDATE t2 SET b="j1a" WHERE a=5;
@@ -117,6 +121,8 @@ include/save_master_gtid.inc
 connection server_3;
 CHANGE MASTER TO master_host = '127.0.0.1', master_port = SERVER_MYPORT_4,
 MASTER_USE_GTID=CURRENT_POS;
+Warnings:
+Warning	1681	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
 include/start_slave.inc
 include/sync_with_master_gtid.inc
 SELECT * FROM t2 ORDER BY a;
diff --git a/mysql-test/suite/engines/funcs/r/rpl_change_master.result b/mysql-test/suite/engines/funcs/r/rpl_change_master.result
index 48cec72d917..457fd83dc2a 100644
--- a/mysql-test/suite/engines/funcs/r/rpl_change_master.result
+++ b/mysql-test/suite/engines/funcs/r/rpl_change_master.result
@@ -26,4 +26,9 @@ connection master;
 CHANGE MASTER TO MASTER_USER='root', MASTER_SSL=0, MASTER_SSL_CA='', MASTER_SSL_CERT='',
 MASTER_SSL_KEY='', MASTER_SSL_CRL='', MASTER_SSL_CRLPATH='';
 CHANGE MASTER TO MASTER_USER='root', MASTER_PASSWORD='', MASTER_SSL=0;
+"Usage of CURRENT_POS in CHANGE MASTER  MASTER_USE_GTID is dreprecated.
+CHANGE MASTER TO MASTER_USE_GTID=CURRENT_POS;
+Warnings:
+Warning	1681	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
+CHANGE MASTER TO MASTER_USE_GTID=SLAVE_POS;
 include/rpl_end.inc
diff --git a/mysql-test/suite/multi_source/gtid.result b/mysql-test/suite/multi_source/gtid.result
index 0ed1062b70f..be62a33ed66 100644
--- a/mysql-test/suite/multi_source/gtid.result
+++ b/mysql-test/suite/multi_source/gtid.result
@@ -48,7 +48,11 @@ INSERT INTO t2 VALUES (2, "switch1");
 INSERT INTO t3 VALUES (202, "switch1 b");
 connection slave2;
 CHANGE MASTER 'slave1' TO master_port=MYPORT_1, master_host='127.0.0.1', master_user='root', master_use_gtid=current_pos;
+Warnings:
+Warning	1681	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
 CHANGE MASTER 'slave2' TO master_port=MYPORT_2, master_host='127.0.0.1', master_user='root', master_use_gtid=current_pos;
+Warnings:
+Warning	1681	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
 SET default_master_connection = 'slave1';
 START SLAVE;
 include/wait_for_slave_to_start.inc
@@ -76,6 +80,8 @@ connection slave2;
 include/sync_with_master_gtid.inc
 connection slave1;
 CHANGE MASTER TO master_port=MYPORT_4, master_host='127.0.0.1', master_user='root', master_use_gtid=current_pos;
+Warnings:
+Warning	1681	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
 START SLAVE;
 SELECT * FROM t1 ORDER BY a;
 a	b
diff --git a/mysql-test/suite/rpl/r/rpl_binlog_dump_slave_gtid_state_info.result b/mysql-test/suite/rpl/r/rpl_binlog_dump_slave_gtid_state_info.result
index 98688df7273..e18a89080c5 100644
--- a/mysql-test/suite/rpl/r/rpl_binlog_dump_slave_gtid_state_info.result
+++ b/mysql-test/suite/rpl/r/rpl_binlog_dump_slave_gtid_state_info.result
@@ -5,6 +5,8 @@ SET GLOBAL LOG_WARNINGS=2;
 connection slave;
 include/stop_slave.inc
 CHANGE MASTER TO MASTER_USE_GTID=current_pos;
+Warnings:
+Warning	1681	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
 include/start_slave.inc
 connection master;
 "Test Case 1: Start binlog_dump to slave_server(#), pos(master-bin.000001, ###), using_gtid(1), gtid('')"
diff --git a/mysql-test/suite/rpl/r/rpl_change_master.result b/mysql-test/suite/rpl/r/rpl_change_master.result
index 48cec72d917..457fd83dc2a 100644
--- a/mysql-test/suite/rpl/r/rpl_change_master.result
+++ b/mysql-test/suite/rpl/r/rpl_change_master.result
@@ -26,4 +26,9 @@ connection master;
 CHANGE MASTER TO MASTER_USER='root', MASTER_SSL=0, MASTER_SSL_CA='', MASTER_SSL_CERT='',
 MASTER_SSL_KEY='', MASTER_SSL_CRL='', MASTER_SSL_CRLPATH='';
 CHANGE MASTER TO MASTER_USER='root', MASTER_PASSWORD='', MASTER_SSL=0;
+"Usage of CURRENT_POS in CHANGE MASTER  MASTER_USE_GTID is dreprecated.
+CHANGE MASTER TO MASTER_USE_GTID=CURRENT_POS;
+Warnings:
+Warning	1681	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
+CHANGE MASTER TO MASTER_USE_GTID=SLAVE_POS;
 include/rpl_end.inc
diff --git a/mysql-test/suite/rpl/r/rpl_gtid_basic.result b/mysql-test/suite/rpl/r/rpl_gtid_basic.result
index 32df09789cc..eb846745307 100644
--- a/mysql-test/suite/rpl/r/rpl_gtid_basic.result
+++ b/mysql-test/suite/rpl/r/rpl_gtid_basic.result
@@ -69,6 +69,8 @@ INSERT INTO t2 VALUES (5, "i1a");
 connection server_4;
 CHANGE MASTER TO master_host = '127.0.0.1', master_port = MASTER_PORT,
 MASTER_USE_GTID=CURRENT_POS;
+Warnings:
+Warning	1681	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
 include/start_slave.inc
 SELECT * FROM t1 ORDER BY a;
 a	b
@@ -89,6 +91,8 @@ connection server_2;
 include/stop_slave.inc
 CHANGE MASTER TO master_host = '127.0.0.1', master_port = SERVER_MYPORT_4,
 MASTER_USE_GTID=CURRENT_POS;
+Warnings:
+Warning	1681	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
 include/start_slave.inc
 connection server_4;
 UPDATE t2 SET b="j1a" WHERE a=5;
@@ -117,6 +121,8 @@ include/save_master_gtid.inc
 connection server_3;
 CHANGE MASTER TO master_host = '127.0.0.1', master_port = SERVER_MYPORT_4,
 MASTER_USE_GTID=CURRENT_POS;
+Warnings:
+Warning	1681	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
 include/start_slave.inc
 include/sync_with_master_gtid.inc
 SELECT * FROM t2 ORDER BY a;
diff --git a/mysql-test/suite/rpl/r/rpl_gtid_crash.result b/mysql-test/suite/rpl/r/rpl_gtid_crash.result
index 153081d9ca5..5e14213c7da 100644
--- a/mysql-test/suite/rpl/r/rpl_gtid_crash.result
+++ b/mysql-test/suite/rpl/r/rpl_gtid_crash.result
@@ -15,6 +15,8 @@ SET sql_log_bin=1;
 include/stop_slave.inc
 CHANGE MASTER TO master_host = '127.0.0.1', master_port = MASTER_PORT,
 MASTER_USE_GTID=CURRENT_POS;
+Warnings:
+Warning	1681	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
 connection server_1;
 INSERT INTO t1 VALUES (2,1);
 INSERT INTO t1 VALUES (3,1);
diff --git a/mysql-test/suite/rpl/r/rpl_gtid_errorhandling.result b/mysql-test/suite/rpl/r/rpl_gtid_errorhandling.result
index 54156685806..31f9e689d41 100644
--- a/mysql-test/suite/rpl/r/rpl_gtid_errorhandling.result
+++ b/mysql-test/suite/rpl/r/rpl_gtid_errorhandling.result
@@ -74,6 +74,8 @@ INSERT INTO t1 VALUES (2);
 SET sql_log_bin = 1;
 INSERT INTO t1 VALUES (3);
 CHANGE MASTER TO master_use_gtid=current_pos;
+Warnings:
+Warning	1681	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
 BEGIN;
 SET GLOBAL gtid_slave_pos = "100-100-100";
 ERROR 25000: You are not allowed to execute this command in a transaction
diff --git a/mysql-test/suite/rpl/r/rpl_gtid_excess_initial_delay.result b/mysql-test/suite/rpl/r/rpl_gtid_excess_initial_delay.result
index 641d186ab78..e5838f8ed50 100644
--- a/mysql-test/suite/rpl/r/rpl_gtid_excess_initial_delay.result
+++ b/mysql-test/suite/rpl/r/rpl_gtid_excess_initial_delay.result
@@ -4,6 +4,8 @@ CREATE TABLE t1 (i INT);
 connection slave;
 include/stop_slave.inc
 CHANGE MASTER TO MASTER_USE_GTID= current_pos, MASTER_DELAY= 10;
+Warnings:
+Warning	1681	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
 include/start_slave.inc
 connection master;
 INSERT INTO t1 VALUES (1);
diff --git a/mysql-test/suite/rpl/r/rpl_gtid_master_promote.result b/mysql-test/suite/rpl/r/rpl_gtid_master_promote.result
index 15bcb6621ff..6a77d532f1b 100644
--- a/mysql-test/suite/rpl/r/rpl_gtid_master_promote.result
+++ b/mysql-test/suite/rpl/r/rpl_gtid_master_promote.result
@@ -13,15 +13,23 @@ END|
 connection server_2;
 include/stop_slave.inc
 CHANGE MASTER TO master_use_gtid=current_pos;
+Warnings:
+Warning	1681	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
 connection server_3;
 include/stop_slave.inc
 CHANGE MASTER TO master_use_gtid=current_pos;
+Warnings:
+Warning	1681	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
 connection server_4;
 include/stop_slave.inc
 CHANGE MASTER TO master_use_gtid=current_pos;
+Warnings:
+Warning	1681	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
 connection server_5;
 include/stop_slave.inc
 CHANGE MASTER TO master_use_gtid=current_pos;
+Warnings:
+Warning	1681	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
 connection server_1;
 SET gtid_domain_id= 1;
 CREATE TABLE t1 (a INT PRIMARY KEY) ENGINE=InnoDB;
@@ -340,6 +348,8 @@ a	b
 connection server_1;
 CHANGE MASTER TO master_host = '127.0.0.1', master_port = SERVER_MYPORT_2,
 master_user = "root", master_use_gtid = current_pos;
+Warnings:
+Warning	1681	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
 include/start_slave.inc
 SELECT * FROM t1 ORDER BY a;
 a
diff --git a/mysql-test/suite/rpl/r/rpl_gtid_mdev4473.result b/mysql-test/suite/rpl/r/rpl_gtid_mdev4473.result
index 5c80e64dc9b..39e7e9a0c6a 100644
--- a/mysql-test/suite/rpl/r/rpl_gtid_mdev4473.result
+++ b/mysql-test/suite/rpl/r/rpl_gtid_mdev4473.result
@@ -13,6 +13,8 @@ reset slave all;
 connection server_1;
 CHANGE MASTER TO master_host = '127.0.0.1', master_port = SERVER_MYPORT_2,
 master_user='root', MASTER_USE_GTID=CURRENT_POS;
+Warnings:
+Warning	1681	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
 include/start_slave.inc
 include/wait_for_slave_to_start.inc
 connection server_2;
@@ -23,6 +25,8 @@ flush logs;
 connection server_3;
 CHANGE MASTER TO master_host = '127.0.0.1', master_port = SERVER_MYPORT_2,
 MASTER_USE_GTID=CURRENT_POS;
+Warnings:
+Warning	1681	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
 include/start_slave.inc
 select * from t1 order by n;
 n
@@ -56,11 +60,15 @@ reset slave all;
 connection server_2;
 CHANGE MASTER TO master_host = '127.0.0.1', master_port = SERVER_MYPORT_1,
 master_user = 'root', MASTER_USE_GTID=CURRENT_POS;
+Warnings:
+Warning	1681	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
 include/start_slave.inc
 connection server_3;
 include/stop_slave.inc
 CHANGE MASTER TO master_host = '127.0.0.1', master_port = SERVER_MYPORT_1,
 MASTER_USE_GTID=CURRENT_POS;
+Warnings:
+Warning	1681	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
 include/start_slave.inc
 connection server_1;
 drop table t1;
diff --git a/mysql-test/suite/rpl/r/rpl_gtid_mdev4820.result b/mysql-test/suite/rpl/r/rpl_gtid_mdev4820.result
index 606207c1d99..9b8a1916262 100644
--- a/mysql-test/suite/rpl/r/rpl_gtid_mdev4820.result
+++ b/mysql-test/suite/rpl/r/rpl_gtid_mdev4820.result
@@ -45,6 +45,8 @@ SET GLOBAL gtid_slave_pos= '0-2-10';
 connection server_1;
 CHANGE MASTER TO master_host = '127.0.0.1', master_port = SERVER_MYPORT_2,
 master_user= 'root', master_use_gtid=CURRENT_POS;
+Warnings:
+Warning	1681	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
 START SLAVE;
 connection server_2;
 INSERT INTO t1 VALUES (11);
@@ -72,6 +74,8 @@ connection server_2;
 INSERT INTO t1 VALUES (22);
 CHANGE MASTER TO master_host = '127.0.0.1', master_port = SERVER_MYPORT_1,
 master_user= 'root', master_use_gtid=CURRENT_POS;
+Warnings:
+Warning	1681	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
 START SLAVE;
 SET sql_log_bin= 0;
 CALL mtr.add_suppression("which is not in the master's binlog. Since the master's binlog contains GTIDs with higher sequence numbers, it probably means that the slave has diverged");
diff --git a/mysql-test/suite/rpl/r/rpl_gtid_misc.result b/mysql-test/suite/rpl/r/rpl_gtid_misc.result
index a5c61759ed6..bdc07d5956c 100644
--- a/mysql-test/suite/rpl/r/rpl_gtid_misc.result
+++ b/mysql-test/suite/rpl/r/rpl_gtid_misc.result
@@ -10,6 +10,8 @@ SET sql_log_bin= 0;
 INSERT INTO t1 VALUES (1);
 SET sql_log_bin= 1;
 CHANGE MASTER TO master_use_gtid= current_pos;
+Warnings:
+Warning	1681	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
 connection master;
 CREATE TEMPORARY TABLE t2 LIKE t1;
 INSERT INTO t2 VALUE (1);
diff --git a/mysql-test/suite/rpl/r/rpl_gtid_nobinlog.result b/mysql-test/suite/rpl/r/rpl_gtid_nobinlog.result
index c42348d40ee..b7e8bac2fec 100644
--- a/mysql-test/suite/rpl/r/rpl_gtid_nobinlog.result
+++ b/mysql-test/suite/rpl/r/rpl_gtid_nobinlog.result
@@ -22,6 +22,8 @@ include/stop_slave.inc
 connection server_1;
 CHANGE MASTER TO master_host = '127.0.0.1', master_port = SLAVE_PORT,
 master_user = 'root', master_use_gtid = current_pos;
+Warnings:
+Warning	1681	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
 START SLAVE;
 include/wait_for_slave_to_start.inc
 connection server_2;
@@ -52,6 +54,8 @@ include/save_master_gtid.inc
 connection server_2;
 CHANGE MASTER TO master_host = '127.0.0.1', master_port = MASTER_PORT,
 master_use_gtid = current_pos;
+Warnings:
+Warning	1681	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
 START SLAVE;
 include/sync_with_master_gtid.inc
 SELECT * FROM t1 ORDER BY a;
diff --git a/mysql-test/suite/rpl/r/rpl_gtid_reconnect.result b/mysql-test/suite/rpl/r/rpl_gtid_reconnect.result
index 4f50d7c6d85..279783f0864 100644
--- a/mysql-test/suite/rpl/r/rpl_gtid_reconnect.result
+++ b/mysql-test/suite/rpl/r/rpl_gtid_reconnect.result
@@ -2,6 +2,8 @@ include/rpl_init.inc [topology=1->2]
 connection server_2;
 include/stop_slave.inc
 CHANGE MASTER TO master_use_gtid= current_pos;
+Warnings:
+Warning	1681	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
 include/start_slave.inc
 connection server_1;
 CREATE TABLE t1 (a INT);
diff --git a/mysql-test/suite/rpl/r/rpl_gtid_sort.result b/mysql-test/suite/rpl/r/rpl_gtid_sort.result
index 34c0fd32766..ced329f0aef 100644
--- a/mysql-test/suite/rpl/r/rpl_gtid_sort.result
+++ b/mysql-test/suite/rpl/r/rpl_gtid_sort.result
@@ -59,6 +59,8 @@ Variable_name	Value
 gtid_binlog_state	
 CHANGE MASTER TO master_host = '127.0.0.1', master_port = MASTER_PORT,
 MASTER_USE_GTID=CURRENT_POS;
+Warnings:
+Warning	1681	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
 include/start_slave.inc
 SHOW VARIABLES LIKE 'gtid_binlog_pos';
 Variable_name	Value
diff --git a/mysql-test/suite/rpl/r/rpl_gtid_startpos.result b/mysql-test/suite/rpl/r/rpl_gtid_startpos.result
index 3c363004170..146d0df8205 100644
--- a/mysql-test/suite/rpl/r/rpl_gtid_startpos.result
+++ b/mysql-test/suite/rpl/r/rpl_gtid_startpos.result
@@ -12,6 +12,8 @@ connection server_2;
 SET GLOBAL gtid_slave_pos="";
 CHANGE MASTER TO master_host = '127.0.0.1', master_port = MASTER_PORT,
 MASTER_USE_GTID=CURRENT_POS;
+Warnings:
+Warning	1681	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
 include/start_slave.inc
 SELECT * FROM t1;
 a
@@ -34,6 +36,8 @@ connection server_2;
 SET GLOBAL gtid_slave_pos="";
 CHANGE MASTER TO master_host = '127.0.0.1', master_port = MASTER_PORT,
 MASTER_USE_GTID=CURRENT_POS;
+Warnings:
+Warning	1681	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
 START SLAVE;
 include/wait_for_slave_io_error.inc [errno=1236]
 include/stop_slave.inc
@@ -56,6 +60,8 @@ connection server_2;
 SET GLOBAL gtid_slave_pos='0-1-3';
 CHANGE MASTER TO master_host = '127.0.0.1', master_port = MASTER_PORT,
 MASTER_USE_GTID=CURRENT_POS;
+Warnings:
+Warning	1681	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
 include/start_slave.inc
 include/sync_with_master_gtid.inc
 SELECT * FROM t1 ORDER by a;
@@ -96,6 +102,8 @@ RESET MASTER;
 connection server_2;
 SET GLOBAL gtid_slave_pos='';
 CHANGE MASTER TO master_host='127.0.0.1', master_port=MASTER_PORT, master_user='root', master_use_gtid=current_pos;
+Warnings:
+Warning	1681	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
 include/start_slave.inc
 connection server_1;
 CREATE TABLE t1 (a INT PRIMARY KEY);
@@ -151,6 +159,8 @@ START SLAVE;
 include/wait_for_slave_sql_error.inc [errno=1050]
 STOP SLAVE IO_THREAD;
 CHANGE MASTER TO MASTER_USE_GTID=CURRENT_POS;
+Warnings:
+Warning	1681	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
 include/start_slave.inc
 connection server_1;
 INSERT INTO t1 VALUES(3);
diff --git a/mysql-test/suite/rpl/r/rpl_gtid_stop_start.result b/mysql-test/suite/rpl/r/rpl_gtid_stop_start.result
index 50f24d56e9a..883f9c768c4 100644
--- a/mysql-test/suite/rpl/r/rpl_gtid_stop_start.result
+++ b/mysql-test/suite/rpl/r/rpl_gtid_stop_start.result
@@ -8,6 +8,8 @@ include/stop_slave.inc
 Master_Log_File = 'master-bin.000001'
 Using_Gtid = 'No'
 CHANGE MASTER TO master_use_gtid=current_pos;
+Warnings:
+Warning	1681	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
 FLUSH LOGS;
 connection server_1;
 FLUSH LOGS;
diff --git a/mysql-test/suite/rpl/r/rpl_gtid_until.result b/mysql-test/suite/rpl/r/rpl_gtid_until.result
index 2295aad34ac..8b99c0a59c4 100644
--- a/mysql-test/suite/rpl/r/rpl_gtid_until.result
+++ b/mysql-test/suite/rpl/r/rpl_gtid_until.result
@@ -26,6 +26,8 @@ include/stop_slave_io.inc
 START SLAVE UNTIL master_gtid_pos = "";
 ERROR HY000: START SLAVE UNTIL master_gtid_pos requires that slave is using GTID
 CHANGE MASTER TO master_use_gtid=current_pos;
+Warnings:
+Warning	1681	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
 connection server_1;
 CREATE TABLE t1 (a INT PRIMARY KEY) ENGINE=InnoDB;
 INSERT INTO t1 VALUES(1);
@@ -212,6 +214,8 @@ INSERT INTO t1 VALUES (10);
 connection server_2;
 CHANGE MASTER TO master_host = '127.0.0.1', master_port = SERVER_MYPORT_1,
 master_user = "root", master_use_gtid = current_pos;
+Warnings:
+Warning	1681	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
 START SLAVE UNTIL master_gtid_pos = '0-1-2';
 include/wait_for_slave_to_start.inc
 connection server_1;
diff --git a/mysql-test/suite/rpl/r/rpl_mdev6386.result b/mysql-test/suite/rpl/r/rpl_mdev6386.result
index d0e5144857a..8c376bfa991 100644
--- a/mysql-test/suite/rpl/r/rpl_mdev6386.result
+++ b/mysql-test/suite/rpl/r/rpl_mdev6386.result
@@ -11,6 +11,8 @@ CALL mtr.add_suppression("Commit failed due to failure of an earlier commit on w
 INSERT INTO t1 VALUES (1, 2);
 SET sql_log_bin= 1;
 CHANGE MASTER TO master_use_gtid= current_pos;
+Warnings:
+Warning	1681	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
 Contents on slave before:
 SELECT * FROM t1 ORDER BY a;
 a	b
diff --git a/mysql-test/suite/rpl/r/rpl_parallel_mdev6589.result b/mysql-test/suite/rpl/r/rpl_parallel_mdev6589.result
index 47cdb3496da..f56fd88c6da 100644
--- a/mysql-test/suite/rpl/r/rpl_parallel_mdev6589.result
+++ b/mysql-test/suite/rpl/r/rpl_parallel_mdev6589.result
@@ -5,6 +5,8 @@ SET @old_parallel_threads=@@GLOBAL.slave_parallel_threads;
 include/stop_slave.inc
 SET GLOBAL slave_parallel_threads=10;
 CHANGE MASTER TO master_use_gtid=current_pos;
+Warnings:
+Warning	1681	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
 include/start_slave.inc
 *** MDEV-6589: Incorrect relay log start position when restarting SQL thread after error in parallel replication ***
 connection server_1;
diff --git a/mysql-test/suite/rpl/r/rpl_parallel_multilevel2.result b/mysql-test/suite/rpl/r/rpl_parallel_multilevel2.result
index 674cd7a32b4..f438ced5439 100644
--- a/mysql-test/suite/rpl/r/rpl_parallel_multilevel2.result
+++ b/mysql-test/suite/rpl/r/rpl_parallel_multilevel2.result
@@ -18,11 +18,15 @@ SET @old_updates= @@GLOBAL.binlog_direct_non_transactional_updates;
 SET GLOBAL binlog_direct_non_transactional_updates=OFF;
 SET SESSION binlog_direct_non_transactional_updates=OFF;
 CHANGE MASTER TO master_use_gtid=current_pos;
+Warnings:
+Warning	1681	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
 connection server_3;
 SET @old_parallel_threads=@@GLOBAL.slave_parallel_threads;
 include/stop_slave.inc
 SET GLOBAL slave_parallel_threads=10;
 CHANGE MASTER TO master_use_gtid=current_pos;
+Warnings:
+Warning	1681	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
 connection server_1;
 BEGIN;
 CREATE TEMPORARY TABLE t2 (a INT PRIMARY KEY) ENGINE=MEMORY;
diff --git a/mysql-test/suite/rpl/r/rpl_parallel_temptable.result b/mysql-test/suite/rpl/r/rpl_parallel_temptable.result
index 52efed22541..19b787ff61b 100644
--- a/mysql-test/suite/rpl/r/rpl_parallel_temptable.result
+++ b/mysql-test/suite/rpl/r/rpl_parallel_temptable.result
@@ -5,6 +5,8 @@ SET @old_parallel_threads=@@GLOBAL.slave_parallel_threads;
 include/stop_slave.inc
 SET GLOBAL slave_parallel_threads=5;
 CHANGE MASTER TO master_use_gtid= current_pos;
+Warnings:
+Warning	1681	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
 include/start_slave.inc
 connection server_1;
 CREATE TABLE t1 (a INT PRIMARY KEY, b VARCHAR(100) CHARACTER SET utf8);
diff --git a/mysql-test/suite/rpl/r/rpl_perfschema_connect_config.result b/mysql-test/suite/rpl/r/rpl_perfschema_connect_config.result
index 4ace84ffac4..38b6c1727d1 100644
--- a/mysql-test/suite/rpl/r/rpl_perfschema_connect_config.result
+++ b/mysql-test/suite/rpl/r/rpl_perfschema_connect_config.result
@@ -87,6 +87,8 @@ include/assert.inc [Value returned by SSS and PS table for Using_Gtid should be
 change master to
 master_user = 'root',
 master_use_gtid= CURRENT_POS;
+Warnings:
+Warning	####	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
 include/assert.inc [Value returned by SSS and PS table for Using_Gtid should be same.]
 
 # 3) Test for Auto_position= SLAVE_POS
diff --git a/mysql-test/suite/rpl/r/rpl_upgrade_master_info.result b/mysql-test/suite/rpl/r/rpl_upgrade_master_info.result
index ffa041efd27..ce788022114 100644
--- a/mysql-test/suite/rpl/r/rpl_upgrade_master_info.result
+++ b/mysql-test/suite/rpl/r/rpl_upgrade_master_info.result
@@ -4,6 +4,8 @@ include/master-slave.inc
 connection slave;
 include/stop_slave.inc
 CHANGE MASTER TO master_use_gtid=CURRENT_POS;
+Warnings:
+Warning	1681	'master_use_gtid=current_pos' is deprecated and will be removed in a future release
 include/rpl_stop_server.inc [server_number=2]
 include/rpl_start_server.inc [server_number=2]
 connection master;
diff --git a/mysql-test/suite/rpl/t/rpl_change_master.test b/mysql-test/suite/rpl/t/rpl_change_master.test
index 9ab49a585e6..010dbf6ffe6 100644
--- a/mysql-test/suite/rpl/t/rpl_change_master.test
+++ b/mysql-test/suite/rpl/t/rpl_change_master.test
@@ -108,4 +108,10 @@ CHANGE MASTER TO MASTER_USER='root', MASTER_SSL=0, MASTER_SSL_CA='', MASTER_SSL_
   MASTER_SSL_KEY='', MASTER_SSL_CRL='', MASTER_SSL_CRLPATH='';
 CHANGE MASTER TO MASTER_USER='root', MASTER_PASSWORD='', MASTER_SSL=0;
 
+
+# MDEV-20122: With MASTER_USE_GTID=current_pos, slave's I/O thread only checks gtid_current_pos when thread is first started
+--echo "Usage of CURRENT_POS in CHANGE MASTER  MASTER_USE_GTID is dreprecated.
+CHANGE MASTER TO MASTER_USE_GTID=CURRENT_POS;
+CHANGE MASTER TO MASTER_USE_GTID=SLAVE_POS;
+
 --source include/rpl_end.inc
diff --git a/sql/sql_repl.cc b/sql/sql_repl.cc
index 7bcff12a735..28cd2575e7e 100644
--- a/sql/sql_repl.cc
+++ b/sql/sql_repl.cc
@@ -3812,7 +3812,13 @@ bool change_master(THD* thd, Master_info* mi, bool *master_info_added)
   if (lex_mi->use_gtid_opt == LEX_MASTER_INFO::LEX_GTID_SLAVE_POS)
     mi->using_gtid= Master_info::USE_GTID_SLAVE_POS;
   else if (lex_mi->use_gtid_opt == LEX_MASTER_INFO::LEX_GTID_CURRENT_POS)
+  {
     mi->using_gtid= Master_info::USE_GTID_CURRENT_POS;
+    push_warning_printf(thd, Sql_condition::WARN_LEVEL_WARN,
+                        ER_WARN_DEPRECATED_SYNTAX_NO_REPLACEMENT,
+                        ER_THD(thd, ER_WARN_DEPRECATED_SYNTAX_NO_REPLACEMENT),
+                        "master_use_gtid=current_pos");
+  }
   else if (lex_mi->use_gtid_opt == LEX_MASTER_INFO::LEX_GTID_NO ||
            lex_mi->log_file_name || lex_mi->pos ||
            lex_mi->relay_log_name || lex_mi->relay_log_pos)