MINI MINI MANI MO

################################################################################
# This test evaluates that when a policy cannot be enforced, recovery fails
#
# Test:
#   0. The test requires two servers.
#   1. Create 2 tables (t1,t2) on both servers.
#   2. Start group replication on server1 with some data inserted on t1.
#      Change recovery policy on server2 to wait for transaction execution i.e.
#      transactions_applied.
#   3. Lock table t1 on server2 and start group replication to block first
#      phase of recovery. Recovery will get stuck as the member can't execute
#      data on t1.
#   4. Insert some data on t2 on server1.
#      Recovery application of cached data is waiting on the state transfer
#      completion.
#   5. Stop the applier thread for the Group Replication applier.
#   6. Unlock t1 and recovery first phase will unblock.
#      The member should error out as it can't execute cached transactions.
#   7. Clean up.
################################################################################

--let $group_replication_group_name= a5980950-41c7-11e5-b970-0800200c9a66
--source ../inc/have_group_replication_plugin.inc
--let $rpl_skip_group_replication_start= 1
--source ../inc/group_replication.inc

--echo #
--echo # Create t1 and t2 on both servers
--echo # Start group replication on server 1 and insert data on t1
--echo #

--connection server1
--echo server1

SET SESSION sql_log_bin=0;
CREATE TABLE t1 (c1 INT NOT NULL PRIMARY KEY) ENGINE=InnoDB;
CREATE TABLE t2 (c1 INT NOT NULL PRIMARY KEY) ENGINE=InnoDB;
SET SESSION sql_log_bin=1;

--source ../inc/start_and_bootstrap_group_replication.inc

INSERT INTO t1 VALUES (1);

--connection server2
--echo server2

SET SESSION sql_log_bin=0;

CREATE TABLE t1 (c1 INT NOT NULL PRIMARY KEY) ENGINE=InnoDB;
CREATE TABLE t2 (c1 INT NOT NULL PRIMARY KEY) ENGINE=InnoDB;

call mtr.add_suppression("It is not possible to ensure the execution of group*");
call mtr.add_suppression("Fatal error during the Recovery process of Group Replication.*");
call mtr.add_suppression("The member is leaving a group without being on one");
call mtr.add_suppression("The member is already leaving or joining a group.");
call mtr.add_suppression("Error leaving the group");
call mtr.add_suppression("Skipping leave operation: concurrent attempt to leave the group is on-going.");
call mtr.add_suppression("Can't evaluate the group replication applier execution status. Group replication recovery will shutdown to avoid data corruption.");
SET SESSION sql_log_bin=1;

--echo #
--echo # Change recovery policy on server 2 to wait for transaction execution.
--echo #

--connection server2
--echo server2

SET @configured_rec_policy= @@GLOBAL.group_replication_recovery_complete_at;
SET GLOBAL group_replication_recovery_complete_at= "transactions_applied";

--echo #
--echo # Lock table t1 on server 2
--echo # Table t1: Blocks first phase of recovery
--echo #

--connection server_2
--echo server_2 (server2)

LOCK TABLE t1 READ;

--echo #
--echo # Start group replication on server 2 and check it is stuck on recovery
--echo #

--connection server2
--echo server2

--let $group_replication_start_member_state= RECOVERING
--source include/start_group_replication.inc

--echo #
--echo # Insert some transaction on server 1 that will be cached on server 2
--echo #

--connection server1
--echo server1

INSERT INTO t2 VALUES (1);

--echo #
--echo # Wait for the transactions to be cached on server 2
--echo #

--connection server2
--echo server2

--let $wait_condition= SELECT COUNT_TRANSACTIONS_IN_QUEUE=2 FROM performance_schema.replication_group_member_stats;
--source include/wait_condition.inc

--echo #
--echo # Stop the group replication applier thread during recovery.
--echo #

--connection server2
--echo server2

STOP SLAVE SQL_THREAD FOR CHANNEL "group_replication_applier";

--echo #
--echo # UnLock table t1: First phase of recovery can carry on.
--echo # Member 2 will error out as it can't wait for data execution
--echo #

--connection server_2
--echo server_2 (server2)

UNLOCK TABLES;

--let $group_replication_member_state= ERROR
--source ../inc/gr_wait_for_member_state.inc

--echo #
--echo # Test cleanup
--echo #

--connection server1
--echo server1

--let $group_replication_number_of_members= 1
--source ../inc/gr_wait_for_number_of_members.inc

--connection server2
--echo server2

--source include/stop_group_replication.inc
--source include/start_group_replication.inc

DROP TABLE t1;
DROP TABLE t2;

SET GLOBAL group_replication_recovery_complete_at= @configured_rec_policy;

--source ../inc/group_replication_end.inc