MDEV-6676: Optimistic parallel replication

Adjust the configuration options, as discussed on the
maria-developers@ mailing list.

The option to hint a transaction to not be replicated in parallel is
now called @@skip_parallel_replication, consistent with
@@skip_replication.

And the --slave-parallel-mode is now simplified to have just one of
the following values:

  none
  minimal
  conservative
  optimistic
  aggressive

This reflects successively harder efforts to find opportunities to run
things in parallel on the slave. It allows to extend the server with
more automatic heuristics in the future without having to introduce a
new configuration option for each and every one.

4 files changed, 20 insertions, 20 deletions

diff --git a/mysql-test/suite/multi_source/info_logs.result b/mysql-test/suite/multi_source/info_logs.result
index adab98d0e0c..6e6e4cf1503 100644
--- a/mysql-test/suite/multi_source/info_logs.result
+++ b/mysql-test/suite/multi_source/info_logs.result
@@ -85,16 +85,16 @@ MASTER 2.2
 #
 show all slaves status;
 Connection_name	Slave_SQL_State	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	Master_SSL_Verify_Server_Cert	Last_IO_Errno	Last_IO_Error	Last_SQL_Errno	Last_SQL_Error	Replicate_Ignore_Server_Ids	Master_Server_Id	Master_SSL_Crl	Master_SSL_Crlpath	Using_Gtid	Gtid_IO_Pos	Replicate_Do_Domain_Ids	Replicate_Ignore_Domain_Ids	Parallel_Mode	Retried_transactions	Max_relay_log_size	Executed_log_entries	Slave_received_heartbeats	Slave_heartbeat_period	Gtid_Slave_Pos
-	Slave has read all relay log; waiting for the slave I/O thread to update it	Waiting for master to send event	127.0.0.1	root	MYPORT_1	60	master-bin.000001	313	relay.000002	601	master-bin.000001	Yes	Yes							0		0	313	888	None		0	No						0	No	0		0			1			No				domain,follow_master_commit	0	1073741824	7	0	60.000	
-MASTER 2.2	Slave has read all relay log; waiting for the slave I/O thread to update it	Waiting for master to send event	127.0.0.1	root	MYPORT_2	60	master-bin.000001	313	relay-master@00202@002e2.000002	601	master-bin.000001	Yes	Yes							0		0	313	907	None		0	No						0	No	0		0			2			No				domain,follow_master_commit	0	1073741824	7	0	60.000	
+	Slave has read all relay log; waiting for the slave I/O thread to update it	Waiting for master to send event	127.0.0.1	root	MYPORT_1	60	master-bin.000001	313	relay.000002	601	master-bin.000001	Yes	Yes							0		0	313	888	None		0	No						0	No	0		0			1			No				conservative	0	1073741824	7	0	60.000	
+MASTER 2.2	Slave has read all relay log; waiting for the slave I/O thread to update it	Waiting for master to send event	127.0.0.1	root	MYPORT_2	60	master-bin.000001	313	relay-master@00202@002e2.000002	601	master-bin.000001	Yes	Yes							0		0	313	907	None		0	No						0	No	0		0			2			No				conservative	0	1073741824	7	0	60.000	
 include/wait_for_slave_to_start.inc
 set default_master_connection = 'MASTER 2.2';
 include/wait_for_slave_to_start.inc
 set default_master_connection = '';
 show all slaves status;
 Connection_name	Slave_SQL_State	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	Master_SSL_Verify_Server_Cert	Last_IO_Errno	Last_IO_Error	Last_SQL_Errno	Last_SQL_Error	Replicate_Ignore_Server_Ids	Master_Server_Id	Master_SSL_Crl	Master_SSL_Crlpath	Using_Gtid	Gtid_IO_Pos	Replicate_Do_Domain_Ids	Replicate_Ignore_Domain_Ids	Parallel_Mode	Retried_transactions	Max_relay_log_size	Executed_log_entries	Slave_received_heartbeats	Slave_heartbeat_period	Gtid_Slave_Pos
-	Slave has read all relay log; waiting for the slave I/O thread to update it	Waiting for master to send event	127.0.0.1	root	MYPORT_1	60	master-bin.000001	313	relay.000004	536	master-bin.000001	Yes	Yes							0		0	313	823	None		0	No						0	No	0		0			1			No				domain,follow_master_commit	0	1073741824	6	0	60.000	
-MASTER 2.2	Slave has read all relay log; waiting for the slave I/O thread to update it	Waiting for master to send event	127.0.0.1	root	MYPORT_2	60	master-bin.000001	313	relay-master@00202@002e2.000004	536	master-bin.000001	Yes	Yes							0		0	313	842	None		0	No						0	No	0		0			2			No				domain,follow_master_commit	0	1073741824	6	0	60.000	
+	Slave has read all relay log; waiting for the slave I/O thread to update it	Waiting for master to send event	127.0.0.1	root	MYPORT_1	60	master-bin.000001	313	relay.000004	536	master-bin.000001	Yes	Yes							0		0	313	823	None		0	No						0	No	0		0			1			No				conservative	0	1073741824	6	0	60.000	
+MASTER 2.2	Slave has read all relay log; waiting for the slave I/O thread to update it	Waiting for master to send event	127.0.0.1	root	MYPORT_2	60	master-bin.000001	313	relay-master@00202@002e2.000004	536	master-bin.000001	Yes	Yes							0		0	313	842	None		0	No						0	No	0		0			2			No				conservative	0	1073741824	6	0	60.000	
 #
 # List of files matching '*info*' pattern
 #   after slave server restart
diff --git a/mysql-test/suite/multi_source/multisource.result b/mysql-test/suite/multi_source/multisource.result
index 1647da74218..4475ec58c6f 100644
--- a/mysql-test/suite/multi_source/multisource.result
+++ b/mysql-test/suite/multi_source/multisource.result
@@ -11,13 +11,13 @@ set default_master_connection = 'master1';
 include/wait_for_slave_to_start.inc
 show slave 'master1' 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	Master_SSL_Verify_Server_Cert	Last_IO_Errno	Last_IO_Error	Last_SQL_Errno	Last_SQL_Error	Replicate_Ignore_Server_Ids	Master_Server_Id	Master_SSL_Crl	Master_SSL_Crlpath	Using_Gtid	Gtid_IO_Pos	Replicate_Do_Domain_Ids	Replicate_Ignore_Domain_Ids	Parallel_Mode
-Waiting for master to send event	127.0.0.1	root	MYPORT_1	60	master-bin.000001	313	mysqld-relay-bin-master1.000002	601	master-bin.000001	Yes	Yes							0		0	313	907	None		0	No						0	No	0		0			1			No				domain,follow_master_commit
+Waiting for master to send event	127.0.0.1	root	MYPORT_1	60	master-bin.000001	313	mysqld-relay-bin-master1.000002	601	master-bin.000001	Yes	Yes							0		0	313	907	None		0	No						0	No	0		0			1			No				conservative
 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	Master_SSL_Verify_Server_Cert	Last_IO_Errno	Last_IO_Error	Last_SQL_Errno	Last_SQL_Error	Replicate_Ignore_Server_Ids	Master_Server_Id	Master_SSL_Crl	Master_SSL_Crlpath	Using_Gtid	Gtid_IO_Pos	Replicate_Do_Domain_Ids	Replicate_Ignore_Domain_Ids	Parallel_Mode
-Waiting for master to send event	127.0.0.1	root	MYPORT_1	60	master-bin.000001	313	mysqld-relay-bin-master1.000002	601	master-bin.000001	Yes	Yes							0		0	313	907	None		0	No						0	No	0		0			1			No				domain,follow_master_commit
+Waiting for master to send event	127.0.0.1	root	MYPORT_1	60	master-bin.000001	313	mysqld-relay-bin-master1.000002	601	master-bin.000001	Yes	Yes							0		0	313	907	None		0	No						0	No	0		0			1			No				conservative
 show all slaves status;
 Connection_name	Slave_SQL_State	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	Master_SSL_Verify_Server_Cert	Last_IO_Errno	Last_IO_Error	Last_SQL_Errno	Last_SQL_Error	Replicate_Ignore_Server_Ids	Master_Server_Id	Master_SSL_Crl	Master_SSL_Crlpath	Using_Gtid	Gtid_IO_Pos	Replicate_Do_Domain_Ids	Replicate_Ignore_Domain_Ids	Parallel_Mode	Retried_transactions	Max_relay_log_size	Executed_log_entries	Slave_received_heartbeats	Slave_heartbeat_period	Gtid_Slave_Pos
-master1	Slave has read all relay log; waiting for the slave I/O thread to update it	Waiting for master to send event	127.0.0.1	root	MYPORT_1	60	master-bin.000001	313	mysqld-relay-bin-master1.000002	601	master-bin.000001	Yes	Yes							0		0	313	907	None		0	No						0	No	0		0			1			No				domain,follow_master_commit	0	1073741824	7	0	60.000	
+master1	Slave has read all relay log; waiting for the slave I/O thread to update it	Waiting for master to send event	127.0.0.1	root	MYPORT_1	60	master-bin.000001	313	mysqld-relay-bin-master1.000002	601	master-bin.000001	Yes	Yes							0		0	313	907	None		0	No						0	No	0		0			1			No				conservative	0	1073741824	7	0	60.000	
 drop database if exists db1;
 create database db1;
 use db1;
@@ -76,8 +76,8 @@ start slave;
 include/wait_for_slave_to_start.inc
 show all slaves status;
 Connection_name	Slave_SQL_State	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	Master_SSL_Verify_Server_Cert	Last_IO_Errno	Last_IO_Error	Last_SQL_Errno	Last_SQL_Error	Replicate_Ignore_Server_Ids	Master_Server_Id	Master_SSL_Crl	Master_SSL_Crlpath	Using_Gtid	Gtid_IO_Pos	Replicate_Do_Domain_Ids	Replicate_Ignore_Domain_Ids	Parallel_Mode	Retried_transactions	Max_relay_log_size	Executed_log_entries	Slave_received_heartbeats	Slave_heartbeat_period	Gtid_Slave_Pos
-	Slave has read all relay log; waiting for the slave I/O thread to update it	Waiting for master to send event	127.0.0.1	root	MYPORT_2	60	master-bin.000001	313	mysqld-relay-bin.000002	601	master-bin.000001	Yes	Yes							0		0	313	899	None		0	No						0	No	0		0			2			No				domain,follow_master_commit	0	1073741824	7	0	60.000	0-1-4
-master1	Slave has read all relay log; waiting for the slave I/O thread to update it	Waiting for master to send event	127.0.0.1	root	MYPORT_1	60	master-bin.000001	988	mysqld-relay-bin-master1.000002	1276	master-bin.000001	Yes	Yes							0		0	988	1582	None		0	No						0	No	0		0			1			No				domain,follow_master_commit	0	1073741824	17	0	60.000	0-1-4
+	Slave has read all relay log; waiting for the slave I/O thread to update it	Waiting for master to send event	127.0.0.1	root	MYPORT_2	60	master-bin.000001	313	mysqld-relay-bin.000002	601	master-bin.000001	Yes	Yes							0		0	313	899	None		0	No						0	No	0		0			2			No				conservative	0	1073741824	7	0	60.000	0-1-4
+master1	Slave has read all relay log; waiting for the slave I/O thread to update it	Waiting for master to send event	127.0.0.1	root	MYPORT_1	60	master-bin.000001	988	mysqld-relay-bin-master1.000002	1276	master-bin.000001	Yes	Yes							0		0	988	1582	None		0	No						0	No	0		0			1			No				conservative	0	1073741824	17	0	60.000	0-1-4
 insert into t1 (f1) values ('three');
 drop database if exists db2;
 create database db2;
@@ -106,8 +106,8 @@ insert into t1 (f1) values ('four');
 create table db1.t3 (f1 int) engine=InnoDB;
 show all slaves status;
 Connection_name	Slave_SQL_State	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	Master_SSL_Verify_Server_Cert	Last_IO_Errno	Last_IO_Error	Last_SQL_Errno	Last_SQL_Error	Replicate_Ignore_Server_Ids	Master_Server_Id	Master_SSL_Crl	Master_SSL_Crlpath	Using_Gtid	Gtid_IO_Pos	Replicate_Do_Domain_Ids	Replicate_Ignore_Domain_Ids	Parallel_Mode	Retried_transactions	Max_relay_log_size	Executed_log_entries	Slave_received_heartbeats	Slave_heartbeat_period	Gtid_Slave_Pos
-	Slave has read all relay log; waiting for the slave I/O thread to update it	Waiting for master to send event	127.0.0.1	root	MYPORT_2	60	master-bin.000001	921	mysqld-relay-bin.000002	1209	master-bin.000001	Yes	Yes							0		0	921	1507	None		0	No						0	No	0		0			2			No				domain,follow_master_commit	0	1073741824	17	0	60.000	0-1-7
-master1	Slave has read all relay log; waiting for the slave I/O thread to update it	Waiting for master to send event	127.0.0.1	root	MYPORT_1	60	master-bin.000002	740	mysqld-relay-bin-master1.000004	1028	master-bin.000002	Yes	Yes							0		0	740	1378	None		0	No						0	No	0		0			1			No				domain,follow_master_commit	0	1073741824	37	0	60.000	0-1-7
+	Slave has read all relay log; waiting for the slave I/O thread to update it	Waiting for master to send event	127.0.0.1	root	MYPORT_2	60	master-bin.000001	921	mysqld-relay-bin.000002	1209	master-bin.000001	Yes	Yes							0		0	921	1507	None		0	No						0	No	0		0			2			No				conservative	0	1073741824	17	0	60.000	0-1-7
+master1	Slave has read all relay log; waiting for the slave I/O thread to update it	Waiting for master to send event	127.0.0.1	root	MYPORT_1	60	master-bin.000002	740	mysqld-relay-bin-master1.000004	1028	master-bin.000002	Yes	Yes							0		0	740	1378	None		0	No						0	No	0		0			1			No				conservative	0	1073741824	37	0	60.000	0-1-7
 select * from db1.t1;
 i	f1
 1	one
diff --git a/mysql-test/suite/multi_source/reset_slave.result b/mysql-test/suite/multi_source/reset_slave.result
index c968d705a81..5e28047945d 100644
--- a/mysql-test/suite/multi_source/reset_slave.result
+++ b/mysql-test/suite/multi_source/reset_slave.result
@@ -11,14 +11,14 @@ insert into t1 values (1),(2);
 stop slave 'master1';
 show slave 'master1' 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	Master_SSL_Verify_Server_Cert	Last_IO_Errno	Last_IO_Error	Last_SQL_Errno	Last_SQL_Error	Replicate_Ignore_Server_Ids	Master_Server_Id	Master_SSL_Crl	Master_SSL_Crlpath	Using_Gtid	Gtid_IO_Pos	Replicate_Do_Domain_Ids	Replicate_Ignore_Domain_Ids	Parallel_Mode
-	127.0.0.1	root	MYPORT_1	60	master-bin.000001	802	mysqld-relay-bin-master1.000002	1090	master-bin.000001	No	No							0		0	802	1396	None		0	No						NULL	No	0		0			1			No				domain,follow_master_commit
+	127.0.0.1	root	MYPORT_1	60	master-bin.000001	802	mysqld-relay-bin-master1.000002	1090	master-bin.000001	No	No							0		0	802	1396	None		0	No						NULL	No	0		0			1			No				conservative
 mysqld-relay-bin-master1.000001
 mysqld-relay-bin-master1.000002
 mysqld-relay-bin-master1.index
 reset slave 'master1';
 show slave 'master1' 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	Master_SSL_Verify_Server_Cert	Last_IO_Errno	Last_IO_Error	Last_SQL_Errno	Last_SQL_Error	Replicate_Ignore_Server_Ids	Master_Server_Id	Master_SSL_Crl	Master_SSL_Crlpath	Using_Gtid	Gtid_IO_Pos	Replicate_Do_Domain_Ids	Replicate_Ignore_Domain_Ids	Parallel_Mode
-	127.0.0.1	root	MYPORT_1	60		4		1090		No	No							0		0	0	1396	None		0	No						NULL	No	0		0			1			No				domain,follow_master_commit
+	127.0.0.1	root	MYPORT_1	60		4		1090		No	No							0		0	0	1396	None		0	No						NULL	No	0		0			1			No				conservative
 reset slave 'master1' all;
 show slave 'master1' status;
 ERROR HY000: There is no master connection 'master1'
diff --git a/mysql-test/suite/multi_source/simple.result b/mysql-test/suite/multi_source/simple.result
index 6c6e15bb750..405e60c28fe 100644
--- a/mysql-test/suite/multi_source/simple.result
+++ b/mysql-test/suite/multi_source/simple.result
@@ -11,8 +11,8 @@ include/wait_for_slave_to_start.inc
 set default_master_connection = '';
 show all slaves status;
 Connection_name	Slave_SQL_State	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	Master_SSL_Verify_Server_Cert	Last_IO_Errno	Last_IO_Error	Last_SQL_Errno	Last_SQL_Error	Replicate_Ignore_Server_Ids	Master_Server_Id	Master_SSL_Crl	Master_SSL_Crlpath	Using_Gtid	Gtid_IO_Pos	Replicate_Do_Domain_Ids	Replicate_Ignore_Domain_Ids	Parallel_Mode	Retried_transactions	Max_relay_log_size	Executed_log_entries	Slave_received_heartbeats	Slave_heartbeat_period	Gtid_Slave_Pos
-slave1	Slave has read all relay log; waiting for the slave I/O thread to update it	Waiting for master to send event	127.0.0.1	root	MYPORT_1	60	master-bin.000001	313	mysqld-relay-bin-slave1.000002	601	master-bin.000001	Yes	Yes							0		0	313	906	None		0	No						0	No	0		0			1			No				domain,follow_master_commit	0	1073741824	7	0	60.000	
-slave2	Slave has read all relay log; waiting for the slave I/O thread to update it	Waiting for master to send event	127.0.0.1	root	MYPORT_2	60	master-bin.000001	313	mysqld-relay-bin-slave2.000002	601	master-bin.000001	Yes	Yes							0		0	313	906	None		0	No						0	No	0		0			2			No				domain,follow_master_commit	0	1073741824	7	0	60.000	
+slave1	Slave has read all relay log; waiting for the slave I/O thread to update it	Waiting for master to send event	127.0.0.1	root	MYPORT_1	60	master-bin.000001	313	mysqld-relay-bin-slave1.000002	601	master-bin.000001	Yes	Yes							0		0	313	906	None		0	No						0	No	0		0			1			No				conservative	0	1073741824	7	0	60.000	
+slave2	Slave has read all relay log; waiting for the slave I/O thread to update it	Waiting for master to send event	127.0.0.1	root	MYPORT_2	60	master-bin.000001	313	mysqld-relay-bin-slave2.000002	601	master-bin.000001	Yes	Yes							0		0	313	906	None		0	No						0	No	0		0			2			No				conservative	0	1073741824	7	0	60.000	
 start all slaves;
 stop slave 'slave1';
 show slave 'slave1' status;
@@ -62,22 +62,22 @@ Using_Gtid	No
 Gtid_IO_Pos	
 Replicate_Do_Domain_Ids	
 Replicate_Ignore_Domain_Ids	
-Parallel_Mode	domain,follow_master_commit
+Parallel_Mode	conservative
 reset slave 'slave1';
 show all slaves status;
 Connection_name	Slave_SQL_State	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	Master_SSL_Verify_Server_Cert	Last_IO_Errno	Last_IO_Error	Last_SQL_Errno	Last_SQL_Error	Replicate_Ignore_Server_Ids	Master_Server_Id	Master_SSL_Crl	Master_SSL_Crlpath	Using_Gtid	Gtid_IO_Pos	Replicate_Do_Domain_Ids	Replicate_Ignore_Domain_Ids	Parallel_Mode	Retried_transactions	Max_relay_log_size	Executed_log_entries	Slave_received_heartbeats	Slave_heartbeat_period	Gtid_Slave_Pos
-slave1			127.0.0.1	root	MYPORT_1	60		4		601		No	No							0		0	0	906	None		0	No						NULL	No	0		0			1			No				domain,follow_master_commit	0	1073741824	7	0	60.000	
-slave2	Slave has read all relay log; waiting for the slave I/O thread to update it	Waiting for master to send event	127.0.0.1	root	MYPORT_2	60	master-bin.000001	313	mysqld-relay-bin-slave2.000002	601	master-bin.000001	Yes	Yes							0		0	313	906	None		0	No						0	No	0		0			2			No				domain,follow_master_commit	0	1073741824	7	0	60.000	
+slave1			127.0.0.1	root	MYPORT_1	60		4		601		No	No							0		0	0	906	None		0	No						NULL	No	0		0			1			No				conservative	0	1073741824	7	0	60.000	
+slave2	Slave has read all relay log; waiting for the slave I/O thread to update it	Waiting for master to send event	127.0.0.1	root	MYPORT_2	60	master-bin.000001	313	mysqld-relay-bin-slave2.000002	601	master-bin.000001	Yes	Yes							0		0	313	906	None		0	No						0	No	0		0			2			No				conservative	0	1073741824	7	0	60.000	
 reset slave 'slave1' all;
 show all slaves status;
 Connection_name	Slave_SQL_State	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	Master_SSL_Verify_Server_Cert	Last_IO_Errno	Last_IO_Error	Last_SQL_Errno	Last_SQL_Error	Replicate_Ignore_Server_Ids	Master_Server_Id	Master_SSL_Crl	Master_SSL_Crlpath	Using_Gtid	Gtid_IO_Pos	Replicate_Do_Domain_Ids	Replicate_Ignore_Domain_Ids	Parallel_Mode	Retried_transactions	Max_relay_log_size	Executed_log_entries	Slave_received_heartbeats	Slave_heartbeat_period	Gtid_Slave_Pos
-slave2	Slave has read all relay log; waiting for the slave I/O thread to update it	Waiting for master to send event	127.0.0.1	root	MYPORT_2	60	master-bin.000001	313	mysqld-relay-bin-slave2.000002	601	master-bin.000001	Yes	Yes							0		0	313	906	None		0	No						0	No	0		0			2			No				domain,follow_master_commit	0	1073741824	7	0	60.000	
+slave2	Slave has read all relay log; waiting for the slave I/O thread to update it	Waiting for master to send event	127.0.0.1	root	MYPORT_2	60	master-bin.000001	313	mysqld-relay-bin-slave2.000002	601	master-bin.000001	Yes	Yes							0		0	313	906	None		0	No						0	No	0		0			2			No				conservative	0	1073741824	7	0	60.000	
 stop all slaves;
 Warnings:
 Note	1938	SLAVE 'slave2' stopped
 show all slaves status;
 Connection_name	Slave_SQL_State	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	Master_SSL_Verify_Server_Cert	Last_IO_Errno	Last_IO_Error	Last_SQL_Errno	Last_SQL_Error	Replicate_Ignore_Server_Ids	Master_Server_Id	Master_SSL_Crl	Master_SSL_Crlpath	Using_Gtid	Gtid_IO_Pos	Replicate_Do_Domain_Ids	Replicate_Ignore_Domain_Ids	Parallel_Mode	Retried_transactions	Max_relay_log_size	Executed_log_entries	Slave_received_heartbeats	Slave_heartbeat_period	Gtid_Slave_Pos
-slave2			127.0.0.1	root	MYPORT_2	60	master-bin.000001	313	mysqld-relay-bin-slave2.000002	601	master-bin.000001	No	No							0		0	313	906	None		0	No						NULL	No	0		0			2			No				domain,follow_master_commit	0	1073741824	7	0	60.000	
+slave2			127.0.0.1	root	MYPORT_2	60	master-bin.000001	313	mysqld-relay-bin-slave2.000002	601	master-bin.000001	No	No							0		0	313	906	None		0	No						NULL	No	0		0			2			No				conservative	0	1073741824	7	0	60.000	
 stop all slaves;
 include/reset_master_slave.inc
 include/reset_master_slave.inc