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################################################################################
# Validate group_replication_consistency= 'AFTER' against majority loss.
#
# Test:
# 00. The test requires three servers: M1, M2 and M3.
# 01. Create a table on the group.
# 02. Make server2 and 3 block before send its prepare message.
# This will allow us to deterministically remove it from the
# group while others are waiting for its acknowledge.
# The not acknowledged transaction must rollback on server 2 and 3.
# 03. Execute T1 on server1.
# 04. Wait until T1 is prepared on server3.
# 05. Crash server 2 and 3.
# Their state on server1 will be UNREACHABLE and the group
# will loose the majority.
# 06. server1 is waiting for the acknowledges, it will not
# proceed until the group majority is reestablished.
# 07. Unblock the group by forcing its membership to be only
# server1.
# 08. T1 did complete on server1.
# 09. T1 did not complete on server 2 and 3.
# 10. Clean up.
################################################################################
# Don't test this under valgrind, memory leaks will occur
--source include/not_valgrind.inc
--source include/have_debug_sync.inc
--source include/force_restart.inc
--source include/have_group_replication_plugin.inc
--let $rpl_server_count= 3
--source include/group_replication.inc
--echo
--echo ############################################################
--echo # 01. Create a table on the group.
--let $rpl_connection_name= server1
--source include/rpl_connection.inc
CREATE TABLE t1 (c1 INT NOT NULL PRIMARY KEY);
--let $rpl_connection_name= server1
--source include/rpl_connection.inc
--let $member1_uuid= query_get_value(SELECT @@SERVER_UUID, @@SERVER_UUID, 1)
--let $rpl_connection_name= server2
--source include/rpl_connection.inc
--let $member2_uuid= query_get_value(SELECT @@SERVER_UUID, @@SERVER_UUID, 1)
--let $rpl_connection_name= server3
--source include/rpl_connection.inc
--let $member3_uuid= query_get_value(SELECT @@SERVER_UUID, @@SERVER_UUID, 1)
--echo
--echo ############################################################
--echo # 02. Make server2 and 3 block before send its prepare message.
--echo # This will allow us to deterministically remove it from the
--echo # group while others are waiting for its acknowledge.
--echo # The not acknowledged transaction must rollback on server 2 and 3.
--let $rpl_connection_name= server2
--source include/rpl_connection.inc
SET @@GLOBAL.DEBUG= '+d,group_replication_wait_on_supress_message_send_after_applier_prepare';
--let $rpl_connection_name= server3
--source include/rpl_connection.inc
SET @@GLOBAL.DEBUG= '+d,group_replication_wait_on_supress_message_send_after_applier_prepare';
--echo
--echo ############################################################
--echo # 03. Execute T1 on server1.
--let $rpl_connection_name= server1
--source include/rpl_connection.inc
--send INSERT INTO t1 VALUES (1)
--echo
--echo ############################################################
--echo # 04. Wait until T1 is prepared on server3.
--let $rpl_connection_name= server2
--source include/rpl_connection.inc
# Wait for the debug sync to be reached.
SET DEBUG_SYNC= "now WAIT_FOR signal.after_supress_message_send_after_applier_prepare_waiting";
--let $rpl_connection_name= server3
--source include/rpl_connection.inc
# Wait for the debug sync to be reached.
SET DEBUG_SYNC= "now WAIT_FOR signal.after_supress_message_send_after_applier_prepare_waiting";
--echo
--echo ############################################################
--echo # 05. Crash server 2 and 3.
--echo # Their state on server1 will be UNREACHABLE and the group
--echo # will loose the majority.
# We do kill the servers, using shutdown_server 0, and then MTR will
# follow the expect file and restart the server, but we do not wait
# for the server restart.
# Since the servers loose its GCS configuration them will not rejoin
# the group.
--let $rpl_connection_name= server2
--source include/rpl_connection.inc
--exec echo "restart" > $MYSQLTEST_VARDIR/tmp/mysqld.2.expect
--shutdown_server 0
--source include/wait_until_disconnected.inc
--let $rpl_connection_name= server3
--source include/rpl_connection.inc
--exec echo "restart" > $MYSQLTEST_VARDIR/tmp/mysqld.3.expect
--shutdown_server 0
--source include/wait_until_disconnected.inc
--let $rpl_connection_name= server_1
--source include/rpl_connection.inc
--let $group_replication_member_state= UNREACHABLE
--let $group_replication_member_id= $member2_uuid
--source include/gr_wait_for_member_state.inc
--let $group_replication_member_state= UNREACHABLE
--let $group_replication_member_id= $member3_uuid
--source include/gr_wait_for_member_state.inc
--let $group_replication_member_id= $member1_uuid
--echo
--echo ############################################################
--echo # 06. server1 is waiting for the acknowledges, it will not
--echo # proceed until the group majority is reestablished.
--let $rpl_connection_name= server_1
--source include/rpl_connection.inc
--let $wait_condition=SELECT COUNT(*)=1 FROM information_schema.processlist WHERE user='root' AND state='waiting for handler commit' AND info='INSERT INTO t1 VALUES (1)'
--source include/wait_condition.inc
--echo
--echo ############################################################
--echo # 07. Unblock the group by forcing its membership to be only
--echo # server1.
--let $member1_local_address= `SELECT @@GLOBAL.group_replication_local_address`
--replace_result $member1_local_address MEMBER1_LOCAL_ADDRESS
--eval SET GLOBAL group_replication_force_members= "$member1_local_address"
--echo
--echo ############################################################
--echo # 08. T1 did complete on server1.
--let $rpl_connection_name= server1
--source include/rpl_connection.inc
--reap
--let $assert_text= 'There is 1 value in table t1'
--let $assert_cond= [SELECT COUNT(*) AS count FROM t1 WHERE c1=1, count, 1] = 1
--source include/assert.inc
--echo
--echo ############################################################
--echo # 09. T1 did not complete on server 2 and 3.
--let $rpl_connection_name= server_2
--source include/rpl_connection.inc
--let $rpl_server_number= 2
--source include/rpl_reconnect.inc
--let $assert_text= 'There are no values in table t1'
--let $assert_cond= [SELECT COUNT(*) AS count FROM t1, count, 1] = 0
--source include/assert.inc
--let $rpl_connection_name= server_3
--source include/rpl_connection.inc
--let $rpl_server_number= 3
--source include/rpl_reconnect.inc
--let $assert_text= 'There are no values in table t1'
--let $assert_cond= [SELECT COUNT(*) AS count FROM t1, count, 1] = 0
--source include/assert.inc
--echo
--echo ############################################################
--echo # 10. Clean up.
--let $rpl_connection_name= server1
--source include/rpl_connection.inc
DROP TABLE t1;
--let $rpl_connection_name= server_2
--source include/rpl_connection.inc
DROP TABLE t1;
--let $rpl_connection_name= server_3
--source include/rpl_connection.inc
DROP TABLE t1;
--source include/group_replication_end.inc
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