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################################################################################
# This test verifies whether the group_replication works fine when majority loss
# occurs while there are dml operations running on some server
#
# Test:
# 0. The test requires two servers: M1 and M2.
# 1. Start the group_replication on all the servers.
# 2. CREATE TABLE ON M1 and CREATE a procedure to perform the dml operations
# on the table
# 3. Call the procedure using send operation
# 4. Kill and restart the server M2
# 5. Wait until server M2 is in UNREACHABLE state.
# 6. SET group_replication_force_members value as local_address of server M1
# 7. Start GR on server M2.
# 8. Obtain the result of send command on M1 and wait until both
# the servers are ONLINE.
# 9. Verify that table t1 has same data across all the members.
# 10.Clean up
################################################################################
# This test does crashes servers, thence we skip it on valgrind.
--source include/not_valgrind.inc
--source include/big_test.inc
--source include/force_restart.inc
--source include/set_privilege_checks_user_as_system_user.inc
--source include/have_group_replication_plugin.inc
--source include/group_replication.inc
--let $rpl_connection_name= server1
--source include/rpl_connection.inc
# Save the local address of server1
--let $local_address_server1= `SELECT @@GLOBAL.group_replication_local_address`
CREATE TABLE t1(a int primary key);
--source include/rpl_sync.inc
# Create a procedure to perform the dml operations.
delimiter $$;
CREATE PROCEDURE dml_operations()
BEGIN
declare x INT;
set x=1;
while x<300 do
insert into t1 values (x);
update t1 set a=x+300 where a=x;
delete from t1 where a<310;
set x=x+1;
end while;
end$$
delimiter ;$$
--echo
--echo ----call procedure----
--send call dml_operations()
--echo
--let $rpl_connection_name= server2
--source include/rpl_connection.inc
set sql_log_bin=0;
call mtr.add_suppression(".*Replica SQL for channel 'group_replication_applier': ... The replica coordinator and worker threads are stopped, possibly leaving data in inconsistent state*");
call mtr.add_suppression("Error in Log_event::read_log_event()");
set sql_log_bin=1;
# Wait until some data is entered into table t1 to ensure that the server2
# will get killed while there are dml operations running on server1
--let $wait_condition= SELECT COUNT(*) >20 FROM t1
--source include/wait_condition.inc
# Kill server2
--echo # killing
--let $group_replication_local_address= `SELECT @@GLOBAL.group_replication_local_address`
--let $group_replication_group_seeds= `SELECT @@GLOBAL.group_replication_group_seeds`
--let $restart_parameters=restart:--group_replication_local_address=$group_replication_local_address --group_replication_group_seeds=$group_replication_group_seeds --group_replication_group_name=$group_replication_group_name
--replace_result $group_replication_local_address GROUP_REPLICATION_LOCAL_ADDRESS $group_replication_group_seeds GROUP_REPLICATION_GROUP_SEEDS $group_replication_group_name GROUP_REPLICATION_GROUP_NAME
--source include/kill_and_restart_mysqld.inc
--echo # restarting
# Needed as we are not using rpl_restart_server.inc
--let $rpl_server_number= 2
--source include/rpl_reconnect.inc
--let $rpl_connection_name= server_1
--source include/rpl_connection.inc
# Verify that there are still two members in the group
--let $group_replication_number_of_members= 2
--source include/gr_wait_for_number_of_members.inc
# Verify that server2 is marked as UNREACHABLE.
let $wait_condition= SELECT COUNT(*)=1 FROM performance_schema.replication_group_members where member_state= "UNREACHABLE";
--source include/wait_condition.inc
--replace_result $local_address_server1 LOCAL_ADDRESS_SERVER_1
eval SET @@GLOBAL.group_replication_force_members= "$local_address_server1";
# Wait until there is only one member in group.
let $wait_condition= SELECT COUNT(*)=1 FROM performance_schema.replication_group_members;
--source include/wait_condition.inc
--let $rpl_connection_name= server2
--source include/rpl_connection.inc
# Start group replication on server2
--let $wait_timeout=300
--source include/start_group_replication.inc
--let $rpl_connection_name= server1
--source include/rpl_connection.inc
# Obtain the result of send command
reap;
# Sync all the servers.
--let $slave_timeout= 100
--source include/rpl_sync.inc
# Verify that table t1 has same data on both the servers.
--let $diff_tables=server1:t1, server2:t1
--source include/diff_tables.inc
# Clean up
drop table t1;
drop procedure dml_operations;
--source include/group_replication_end.inc
|
