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include/master-slave.inc
[connection master]
connection server_2;
include/stop_slave.inc
connection server_1;
RESET MASTER;
SET @@global.max_binlog_size= 4096;
set @@global.rpl_semi_sync_master_enabled = 1;
connection server_2;
RESET MASTER;
SET @@global.max_binlog_size= 4096;
set @@global.rpl_semi_sync_slave_enabled = 1;
set @@global.gtid_slave_pos = "";
CHANGE MASTER TO master_use_gtid= slave_pos;
include/start_slave.inc
connection server_1;
ALTER TABLE mysql.gtid_slave_pos ENGINE=InnoDB;
set @@global.rpl_semi_sync_master_wait_point=AFTER_SYNC;
CREATE TABLE t1 (a INT PRIMARY KEY, b MEDIUMTEXT) ENGINE=Innodb;
INSERT INTO t1 VALUES (1, 'dummy1');
connection server_2;
connection server_1;
#
# Case:1
#
# CRASH the original master, and FAILOVER to the new
# INSERT INTO t1 VALUES (2, REPEAT("x", 4100))
# Row - 2 will be in master's binlog but not committed, gets replicated
# to slave and applied. On crash master should have 1 row and slave
# should have 2 rows.
#
# Expected State post crash:
#=================================================================
# Master | Slave |
# 0-1-4 (Not committed) | 0-1-4 (Received through semi-sync |
# | replication and applied) |
#=================================================================
connect conn_client,127.0.0.1,root,,test,$SERVER_MYPORT_1,;
SET DEBUG_SYNC= "commit_after_release_LOCK_after_binlog_sync SIGNAL con1_ready WAIT_FOR con1_go";
INSERT INTO t1 VALUES (2, REPEAT("x", 4100));
connection server_1;
SET DEBUG_SYNC= "now WAIT_FOR con1_ready";
# Kill the server
connection server_2;
include/wait_for_slave_param.inc [Slave_SQL_Running_State]
include/stop_slave.inc
select count(*) 'on slave must be 2' from t1;
on slave must be 2
2
SELECT @@GLOBAL.gtid_current_pos;
@@GLOBAL.gtid_current_pos
0-1-4
# restart: --skip-slave-start=1 --rpl-semi-sync-slave-enabled=1 --init-rpl-role=SLAVE
connection server_1;
# Ensuring variable rpl_semi_sync_slave_enabled is ON..
# Ensuring status rpl_semi_sync_slave_status is OFF..
select count(*) 'on master must be 1' from t1;
on master must be 1
1
FOUND 1 /truncated binlog file:.*master.*000001/ in mysqld.1.err
disconnect conn_client;
connection server_2;
set global rpl_semi_sync_master_enabled = 1;
set global rpl_semi_sync_master_wait_point=AFTER_SYNC;
connection server_1;
CHANGE MASTER TO master_host='127.0.0.1', master_port=$new_master_port, master_user='root', master_ssl_verify_server_cert=0, master_use_gtid=SLAVE_POS;
set global rpl_semi_sync_slave_enabled = 1;
set @@global.gtid_slave_pos=@@global.gtid_binlog_pos;
include/start_slave.inc
#
# Server_2 promoted as master will send 0-1-4 to new slave Server_1
#
connection server_2;
INSERT INTO t1 VALUES (3, 'dummy3');
# The gtid state on current master must be equal to ...
SHOW VARIABLES LIKE 'gtid_binlog_pos';
Variable_name Value
gtid_binlog_pos 0-2-5
SHOW VARIABLES LIKE 'gtid_binlog_state';
Variable_name Value
gtid_binlog_state 0-1-4,0-2-5
SHOW VARIABLES LIKE 'gtid_slave_pos';
Variable_name Value
gtid_slave_pos 0-1-4
connection server_1;
SELECT COUNT(*) 'must be 3' FROM t1;
must be 3
3
# ... the gtid states on the slave:
SHOW VARIABLES LIKE 'gtid_slave_pos';
Variable_name Value
gtid_slave_pos 0-2-5
SHOW VARIABLES LIKE 'gtid_binlog_pos';
Variable_name Value
gtid_binlog_pos 0-2-5
SHOW VARIABLES LIKE 'gtid_binlog_state';
Variable_name Value
gtid_binlog_state 0-1-4,0-2-5
connection server_2;
#
# Case:2
#
# CRASH the new master, and FAILOVER back to the original
# SET STATEMENT server_id=1 FOR INSERT INTO t1 VALUES (4, REPEAT("x", 4100))
# INSERT INTO t1 VALUES (5, REPEAT("x", 4100))
# Rows 4 and 5 will be in master's binlog but not committed, they get
# replicated to slave and applied. On crash master should have 3 rows
# and slave should have 5 rows.
#
# Expected State post crash:
#=================================================================
# Master | Slave |
# 0-1-6 (Not commited) | 0-1-6 (Received through semi-sync |
# | replication and applied) |
# 0-2-7 (Not commited) | 0-2-7 (Received through semi-sync |
# | replication and applied) |
#=================================================================
connect conn_client,127.0.0.1,root,,test,$SERVER_MYPORT_2,;
SET DEBUG_SYNC= "commit_before_get_LOCK_commit_ordered SIGNAL con1_ready WAIT_FOR con1_go";
SET DEBUG_SYNC= "commit_after_release_LOCK_after_binlog_sync WAIT_FOR con1_go1";
SET STATEMENT server_id=1 FOR INSERT INTO t1 VALUES (4, REPEAT("x", 4100));
connect conn_client_2,127.0.0.1,root,,test,$SERVER_MYPORT_2,;
SET DEBUG_SYNC= "now WAIT_FOR con1_ready";
SET DEBUG_SYNC= "commit_before_get_LOCK_after_binlog_sync SIGNAL con1_go";
SET DEBUG_SYNC= "commit_before_get_LOCK_commit_ordered SIGNAL con2_ready";
INSERT INTO t1 VALUES (5, REPEAT("x", 4100));
connection server_2;
SET DEBUG_SYNC= "now WAIT_FOR con2_ready";
# Kill the server
connection server_1;
include/wait_for_slave_param.inc [Slave_SQL_Running_State]
include/stop_slave.inc
select count(*) 'on slave must be 5' from t1;
on slave must be 5
5
SELECT @@GLOBAL.gtid_current_pos;
@@GLOBAL.gtid_current_pos
0-2-7
# restart: --skip-slave-start=1 --rpl-semi-sync-slave-enabled=1 --init-rpl-role=SLAVE
connection server_2;
# Ensuring variable rpl_semi_sync_slave_enabled is ON..
# Ensuring status rpl_semi_sync_slave_status is OFF..
select count(*) 'on master must be 3' from t1;
on master must be 3
3
FOUND 1 /truncated binlog file:.*slave.*000002.* to remove transactions starting from GTID 0-1-6/ in mysqld.2.err
disconnect conn_client;
connection server_1;
set global rpl_semi_sync_master_enabled = 1;
set global rpl_semi_sync_master_wait_point=AFTER_SYNC;
connection server_2;
CHANGE MASTER TO master_host='127.0.0.1', master_port=$new_master_port, master_user='root', master_ssl_verify_server_cert=0, master_use_gtid=SLAVE_POS;
set global rpl_semi_sync_slave_enabled = 1;
set @@global.gtid_slave_pos=@@global.gtid_binlog_pos;
include/start_slave.inc
#
# Server_1 promoted as master will send 0-1-6 and 0-2-7 to slave Server_2
#
connection server_1;
INSERT INTO t1 VALUES (6, 'dummy6');
# The gtid state on current master must be equal to ...
SHOW VARIABLES LIKE 'gtid_binlog_pos';
Variable_name Value
gtid_binlog_pos 0-1-8
SHOW VARIABLES LIKE 'gtid_binlog_state';
Variable_name Value
gtid_binlog_state 0-2-7,0-1-8
SHOW VARIABLES LIKE 'gtid_slave_pos';
Variable_name Value
gtid_slave_pos 0-2-7
connection server_2;
SELECT COUNT(*) 'must be 6 as' FROM t1;
must be 6 as
6
# ... the gtid states on the slave:
SHOW VARIABLES LIKE 'gtid_slave_pos';
Variable_name Value
gtid_slave_pos 0-1-8
SHOW VARIABLES LIKE 'gtid_binlog_pos';
Variable_name Value
gtid_binlog_pos 0-1-8
SHOW VARIABLES LIKE 'gtid_binlog_state';
Variable_name Value
gtid_binlog_state 0-2-7,0-1-8
include/diff_tables.inc [server_1:t1, server_2:t1]
connection server_1;
#
# Case:3
#
# CRASH the master and FAILOVER to slave
# INSERT INTO t1 VALUES (7, REPEAT("x", 4100))
# INSERT INTO t1 VALUES (8, REPEAT("x", 4100))
# Rows 7 and 8 will be in master's binlog but not committed, only 7
# gets replicated to slave and applied. On crash master should have 6
# rows and slave should have 7 rows.
#
# Expected State post crash:
#=================================================================
# Master | Slave |
# 0-1-9 (Not commited) | 0-1-9 (Received through semi-sync |
# | replication and applied) |
# 0-1-10 (Not commited - | |
# never sent to slave) | |
#=================================================================
connect conn_client,127.0.0.1,root,,test,$SERVER_MYPORT_1,;
SET DEBUG_SYNC= "commit_before_get_LOCK_commit_ordered SIGNAL con1_ready WAIT_FOR con1_go";
INSERT INTO t1 VALUES (7, REPEAT("x", 4100));
connect conn_client_3,127.0.0.1,root,,test,$SERVER_MYPORT_1,;
SET DEBUG_SYNC= "now WAIT_FOR con1_ready";
SET DEBUG_SYNC= "commit_before_update_binlog_end_pos SIGNAL con3_ready WAIT_FOR con1_go";
INSERT INTO t1 VALUES (8, REPEAT("x", 4100));
connection server_1;
SET DEBUG_SYNC= "now WAIT_FOR con3_ready";
# Kill the server
connection server_2;
include/wait_for_slave_param.inc [Slave_SQL_Running_State]
include/stop_slave.inc
select count(*) 'on slave must be 7' from t1;
on slave must be 7
7
SELECT @@GLOBAL.gtid_current_pos;
@@GLOBAL.gtid_current_pos
0-1-9
# restart: --skip-slave-start=1 --rpl-semi-sync-slave-enabled=1 --init-rpl-role=SLAVE
connection server_1;
# Ensuring variable rpl_semi_sync_slave_enabled is ON..
# Ensuring status rpl_semi_sync_slave_status is OFF..
select count(*) 'on master must be 6' from t1;
on master must be 6
6
FOUND 1 /truncated binlog file:.*master.*000002.* to remove transactions starting from GTID 0-1-9/ in mysqld.1.err
disconnect conn_client;
connection server_2;
set global rpl_semi_sync_master_enabled = 1;
set global rpl_semi_sync_master_wait_point=AFTER_SYNC;
connection server_1;
CHANGE MASTER TO master_host='127.0.0.1', master_port=$new_master_port, master_user='root', master_ssl_verify_server_cert=0, master_use_gtid=SLAVE_POS;
set global rpl_semi_sync_slave_enabled = 1;
set @@global.gtid_slave_pos=@@global.gtid_binlog_pos;
include/start_slave.inc
#
# Server_2 promoted as master will send 0-1-9 to slave Server_1
#
connection server_2;
INSERT INTO t1 VALUES (8, 'Done');
include/save_master_gtid.inc
# The gtid state on current master must be equal to ...
SHOW VARIABLES LIKE 'gtid_binlog_pos';
Variable_name Value
gtid_binlog_pos 0-2-10
SHOW VARIABLES LIKE 'gtid_binlog_state';
Variable_name Value
gtid_binlog_state 0-1-9,0-2-10
SHOW VARIABLES LIKE 'gtid_slave_pos';
Variable_name Value
gtid_slave_pos 0-1-9
connection server_1;
include/sync_with_master_gtid.inc
SELECT COUNT(*) 'must be 8' FROM t1;
must be 8
8
# ... the gtid states on the slave:
SHOW VARIABLES LIKE 'gtid_slave_pos';
Variable_name Value
gtid_slave_pos 0-2-10
SHOW VARIABLES LIKE 'gtid_binlog_pos';
Variable_name Value
gtid_binlog_pos 0-2-10
SHOW VARIABLES LIKE 'gtid_binlog_state';
Variable_name Value
gtid_binlog_state 0-1-9,0-2-10
#
# Cleanup
#
include/stop_slave.inc
set global rpl_semi_sync_slave_enabled = 0;
set global rpl_semi_sync_master_enabled = 0;
set global rpl_semi_sync_master_wait_point=default;
RESET MASTER;
RESET SLAVE;
connection server_2;
RESET MASTER;
RESET SLAVE;
set @@global.rpl_semi_sync_master_enabled = 0;
set @@global.rpl_semi_sync_slave_enabled = 0;
set @@global.rpl_semi_sync_master_wait_point=default;
CHANGE MASTER TO master_host='127.0.0.1', master_port=$SERVER_MYPORT_1, master_user='root', master_use_gtid=SLAVE_POS;
set @@global.gtid_slave_pos=@@global.gtid_binlog_pos;
include/start_slave.inc
connection server_1;
DROP TABLE t1;
connection server_2;
connection default;
include/rpl_end.inc
|
