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|
################################################################################
#
# Starting from communication protocol version 8.0.22, XCom will use a single
# leader consensus algorithm based on Multi-Paxos when running GR in SPM.
#
# This test shall verify that, upon switching the group mode from MPM to SPM,
# when on communication protocol v8.0.22, a single leader is used. It will also
# test that when switching from MPM to SPM while using a previous communication
# protocol, the previous consensus algorithm is used (i.e. all members as
# leaders).
#
# Test:
# 0) The test requires three servers.
# 1) Switch to SPM on every member. For each member that was elected as primary
# in SPM, the WRITE_CONSENSUS_LEADERS_MEMBER_ID_PREFERRED and
# WRITE_CONSENSUS_LEADERS_MEMBER_ID_ACTIVE fields of the
# performance_schema.replication_group_communication_information PFS table
# should contain *only* the UUID of that member.
# 2) Change the communication protocol to 8.0.21.
# 3) Switch to SPM on every member. For each member that was elected as primary
# in SPM the WRITE_CONSENSUS_LEADERS_MEMBER_ID_PREFERRED and
# WRITE_CONSENSUS_LEADERS_MEMBER_ID_ACTIVE fields of the
# performance_schema.replication_group_communication_information PFS table
# should contain the UUIDs of *all* the members in the group.
# 4) Cleanup.
#
################################################################################
--source include/big_test.inc
--source include/have_group_replication_plugin.inc
--echo
--echo ####
--echo # 0) The test requires three servers.
--echo ####
--echo
--let $rpl_server_count = 3
--let $rpl_group_replication_single_primary_mode=0
--source include/group_replication.inc
SET SESSION sql_log_bin = 0;
call mtr.add_suppression("A member is joining the group while a group configuration operation is occurring*");
SET SESSION sql_log_bin = 1;
--let $rpl_connection_name= server2
--source include/rpl_connection.inc
SET SESSION sql_log_bin = 0;
call mtr.add_suppression("A member is joining the group while a group configuration operation is occurring*");
SET SESSION sql_log_bin = 1;
--let $rpl_connection_name= server3
--source include/rpl_connection.inc
SET SESSION sql_log_bin = 0;
call mtr.add_suppression("A member is joining the group while a group configuration operation is occurring*");
SET SESSION sql_log_bin = 1;
--echo
--echo ####
--echo # 1) Switch to SPM on every member. For each member that was elected as
--echo # primary in SPM, the WRITE_CONSENSUS_LEADERS_MEMBER_ID_PREFERRED and
--echo # WRITE_CONSENSUS_LEADERS_MEMBER_ID_ACTIVE fields of the
--echo # performance_schema.replication_group_communication_information PFS
--echo # table should contain *only* the UUID of that member.
--echo ####
--echo
--let $rpl_connection_name= server1
--source include/rpl_connection.inc
# Elect member 1
--let $server1_uuid = `SELECT @@server_uuid`
--replace_result $server1_uuid MEMBER1_UUID
--eval SELECT group_replication_switch_to_single_primary_mode("$server1_uuid")
# Verify preferred and active members of member 1
--let $assert_text = The first server's UUID should be the only UUID in WRITE_CONSENSUS_LEADERS_PREFERRED
--let $assert_cond = "[SELECT WRITE_CONSENSUS_LEADERS_PREFERRED FROM performance_schema.replication_group_communication_information]" = "$server1_uuid"
--source include/assert.inc
--let $assert_text = The first server's UUID should be the only UUID in WRITE_CONSENSUS_LEADERS_ACTUAL
--let $assert_cond = "[SELECT WRITE_CONSENSUS_LEADERS_ACTUAL from performance_schema.replication_group_communication_information]" = "$server1_uuid"
--source include/assert.inc
--let $assert_text = Single Leader must be enabled
--let $assert_cond = "[SELECT WRITE_CONSENSUS_SINGLE_LEADER_CAPABLE from performance_schema.replication_group_communication_information]" = "1"
--source include/assert.inc
# Verify preferred and active members of member 2
--let $rpl_connection_name= server2
--source include/rpl_connection.inc
--let $assert_text = The first server's UUID should be the only UUID in WRITE_CONSENSUS_LEADERS_PREFERRED
--let $assert_cond = "[SELECT WRITE_CONSENSUS_LEADERS_PREFERRED from performance_schema.replication_group_communication_information]" = "$server1_uuid"
--source include/assert.inc
--let $assert_text = The first server's UUID should be the only UUID in WRITE_CONSENSUS_LEADERS_ACTUAL
--let $assert_cond = "[SELECT WRITE_CONSENSUS_LEADERS_ACTUAL from performance_schema.replication_group_communication_information]" = "$server1_uuid"
--source include/assert.inc
--let $assert_text = Single Leader must be enabled
--let $assert_cond = "[SELECT WRITE_CONSENSUS_SINGLE_LEADER_CAPABLE from performance_schema.replication_group_communication_information]" = "1"
--source include/assert.inc
# Verify preferred and active members of member 3
--let $rpl_connection_name= server3
--source include/rpl_connection.inc
--let $assert_text = The first server's UUID should be the only UUID in WRITE_CONSENSUS_LEADERS_PREFERRED
--let $assert_cond = "[SELECT WRITE_CONSENSUS_LEADERS_PREFERRED from performance_schema.replication_group_communication_information]" = "$server1_uuid"
--source include/assert.inc
--let $assert_text = The first server's UUID should be the only UUID in WRITE_CONSENSUS_LEADERS_ACTUAL
--let $assert_cond = "[SELECT WRITE_CONSENSUS_LEADERS_ACTUAL from performance_schema.replication_group_communication_information]" = "$server1_uuid"
--source include/assert.inc
--let $assert_text = Single Leader must be enabled
--let $assert_cond = "[SELECT WRITE_CONSENSUS_SINGLE_LEADER_CAPABLE from performance_schema.replication_group_communication_information]" = "1"
--source include/assert.inc
--let $rpl_connection_name= server3
--source include/rpl_connection.inc
--source include/stop_group_replication.inc
--let $rpl_connection_name= server2
--source include/rpl_connection.inc
--source include/stop_group_replication.inc
--let $rpl_connection_name= server1
--source include/rpl_connection.inc
--source include/stop_group_replication.inc
--let $rpl_connection_name= server1
--source include/rpl_connection.inc
--source include/start_and_bootstrap_group_replication.inc
--let $rpl_connection_name= server2
--source include/rpl_connection.inc
--source include/start_group_replication.inc
--let $rpl_connection_name= server3
--source include/rpl_connection.inc
--source include/start_group_replication.inc
# Elect member 2
--let $rpl_connection_name= server2
--source include/rpl_connection.inc
--let $server2_uuid = `SELECT @@server_uuid`
--eval SELECT group_replication_switch_to_multi_primary_mode()
--replace_result $server2_uuid MEMBER2_UUID
--eval SELECT group_replication_switch_to_single_primary_mode("$server2_uuid")
--let $wait_condition = SELECT COUNT(*)=1 FROM performance_schema.replication_group_members WHERE MEMBER_ID = "$server2_uuid" AND MEMBER_ROLE = 'PRIMARY'
--source include/wait_condition.inc
# Verify preferred and active members of member 2
--let $assert_text = The second server's UUID should be the only UUID in WRITE_CONSENSUS_LEADERS_PREFERRED
--let $assert_cond = "[SELECT WRITE_CONSENSUS_LEADERS_PREFERRED from performance_schema.replication_group_communication_information]" = "$server2_uuid"
--source include/assert.inc
--let $assert_text = The second server's UUID should be the only UUID in WRITE_CONSENSUS_LEADERS_ACTUAL
--let $assert_cond = "[SELECT WRITE_CONSENSUS_LEADERS_ACTUAL from performance_schema.replication_group_communication_information]" = "$server2_uuid"
--source include/assert.inc
# Verify preferred and active members of member 1
--let $rpl_connection_name= server1
--source include/rpl_connection.inc
--let $assert_text = The second server's UUID should be the only UUID in WRITE_CONSENSUS_LEADERS_PREFERRED
--let $assert_cond = "[SELECT WRITE_CONSENSUS_LEADERS_PREFERRED from performance_schema.replication_group_communication_information]" = "$server2_uuid"
--source include/assert.inc
--let $assert_text = The second server's UUID should be the only UUID in WRITE_CONSENSUS_LEADERS_ACTUAL
--let $assert_cond = "[SELECT WRITE_CONSENSUS_LEADERS_ACTUAL from performance_schema.replication_group_communication_information]" = "$server2_uuid"
--source include/assert.inc
# Verify preferred and active members of member 3
--let $rpl_connection_name= server3
--source include/rpl_connection.inc
--let $assert_text = The second server's UUID should be the only UUID in WRITE_CONSENSUS_LEADERS_PREFERRED
--let $assert_cond = "[SELECT WRITE_CONSENSUS_LEADERS_PREFERRED from performance_schema.replication_group_communication_information]" = "$server2_uuid"
--source include/assert.inc
--let $assert_text = The second server's UUID should be the only UUID in WRITE_CONSENSUS_LEADERS_ACTUAL
--let $assert_cond = "[SELECT WRITE_CONSENSUS_LEADERS_ACTUAL from performance_schema.replication_group_communication_information]" = "$server2_uuid"
--source include/assert.inc
# Elect member 3
--let $rpl_connection_name= server3
--source include/rpl_connection.inc
--let $server3_uuid = `SELECT @@server_uuid`
--eval SELECT group_replication_switch_to_multi_primary_mode()
--replace_result $server3_uuid MEMBER3_UUID
--eval SELECT group_replication_switch_to_single_primary_mode("$server3_uuid")
--let $wait_condition = SELECT COUNT(*)=1 FROM performance_schema.replication_group_members WHERE MEMBER_ID = "$server3_uuid" AND MEMBER_ROLE = 'PRIMARY'
--source include/wait_condition.inc
# Verify preferred and active members of member 3
--let $assert_text = The third server's UUID should be the only UUID in WRITE_CONSENSUS_LEADERS_PREFERRED
--let $assert_cond = "[SELECT WRITE_CONSENSUS_LEADERS_PREFERRED from performance_schema.replication_group_communication_information]" = "$server3_uuid"
--source include/assert.inc
--let $assert_text = The third server's UUID should be the only UUID in WRITE_CONSENSUS_LEADERS_ACTUAL
--let $assert_cond = "[SELECT WRITE_CONSENSUS_LEADERS_ACTUAL from performance_schema.replication_group_communication_information]" = "$server3_uuid"
--source include/assert.inc
# Verify preferred and active members of member 1
--let $rpl_connection_name= server1
--source include/rpl_connection.inc
--let $assert_text = The third server's UUID should be the only UUID in WRITE_CONSENSUS_LEADERS_PREFERRED
--let $assert_cond = "[SELECT WRITE_CONSENSUS_LEADERS_PREFERRED from performance_schema.replication_group_communication_information]" = "$server3_uuid"
--source include/assert.inc
--let $assert_text = The third server's UUID should be the only UUID in WRITE_CONSENSUS_LEADERS_ACTUAL
--let $assert_cond = "[SELECT WRITE_CONSENSUS_LEADERS_ACTUAL from performance_schema.replication_group_communication_information]" = "$server3_uuid"
--source include/assert.inc
# Verify preferred and active members of member 2
--let $rpl_connection_name= server2
--source include/rpl_connection.inc
--let $assert_text = The third server's UUID should be the only UUID in WRITE_CONSENSUS_LEADERS_PREFERRED
--let $assert_cond = "[SELECT WRITE_CONSENSUS_LEADERS_PREFERRED from performance_schema.replication_group_communication_information]" = "$server3_uuid"
--source include/assert.inc
--let $assert_text = The third server's UUID should be the only UUID in WRITE_CONSENSUS_LEADERS_ACTUAL
--let $assert_cond = "[SELECT WRITE_CONSENSUS_LEADERS_ACTUAL from performance_schema.replication_group_communication_information]" = "$server3_uuid"
--source include/assert.inc
--echo
--echo ####
--echo # 2) Change the communication protocol to 8.0.21. Must restart the group.
--echo ####
--echo
--let $rpl_connection_name= server3
--source include/rpl_connection.inc
--source include/stop_group_replication.inc
--eval SET GLOBAL group_replication_paxos_single_leader = "OFF"
--let $rpl_connection_name= server2
--source include/rpl_connection.inc
--source include/stop_group_replication.inc
--eval SET GLOBAL group_replication_paxos_single_leader = "OFF"
--let $rpl_connection_name= server1
--source include/rpl_connection.inc
--source include/stop_group_replication.inc
--eval SET GLOBAL group_replication_paxos_single_leader = "OFF"
--source include/start_and_bootstrap_group_replication.inc
--let $rpl_connection_name= server2
--source include/rpl_connection.inc
--source include/start_group_replication.inc
--let $rpl_connection_name= server3
--source include/rpl_connection.inc
--source include/start_group_replication.inc
--let $rpl_connection_name= server2
--source include/rpl_connection.inc
--eval SELECT group_replication_set_communication_protocol("8.0.21")
--echo
--echo ####
--echo # 3) Switch to SPM on every member. For each member that was elected as
--echo # primary in SPM the WRITE_CONSENSUS_LEADERS_MEMBER_ID_PREFERRED and
--echo # WRITE_CONSENSUS_LEADERS_MEMBER_ID_ACTIVE fields of the
--echo # performance_schema.replication_group_communication_information PFS
--echo # table should contain the UUIDs of *all* the members in the group.
--echo ####
--echo
# Elect member 1
--let $rpl_connection_name= server1
--source include/rpl_connection.inc
# Wait until the communication protocol change is effective on this member,
# only one group action can run at a time.
# When changing to 8.0.21, the protocol will change to 8.0.16.
--let $wait_condition = SELECT COUNT(*)=1 FROM performance_schema.replication_group_communication_information WHERE PROTOCOL_VERSION = '8.0.16'
--source include/wait_condition_or_abort.inc
--eval SELECT group_replication_switch_to_multi_primary_mode()
--replace_result $server1_uuid MEMBER1_UUID
--eval SELECT group_replication_switch_to_single_primary_mode("$server1_uuid")
--let $wait_condition = SELECT COUNT(*)=1 FROM performance_schema.replication_group_members WHERE MEMBER_ID = "$server1_uuid" AND MEMBER_ROLE = 'PRIMARY'
--source include/wait_condition.inc
# Verify preferred and active members of member 1
--let $assert_text = All members should be in WRITE_CONSENSUS_LEADERS_PREFERRED
--let $num_rows = `SELECT COUNT(*) FROM performance_schema.replication_group_communication_information WHERE WRITE_CONSENSUS_LEADERS_PREFERRED LIKE '%$server1_uuid%' AND WRITE_CONSENSUS_LEADERS_PREFERRED LIKE '%$server2_uuid%' AND WRITE_CONSENSUS_LEADERS_PREFERRED LIKE '%$server3_uuid%'`
--let $assert_cond = "$num_rows" = "1"
--source include/assert.inc
--let $assert_text = All members should be in WRITE_CONSENSUS_LEADERS_ACTUAL
--let $num_rows = `SELECT COUNT(*) FROM performance_schema.replication_group_communication_information WHERE WRITE_CONSENSUS_LEADERS_ACTUAL LIKE '%$server1_uuid%' AND WRITE_CONSENSUS_LEADERS_ACTUAL LIKE '%$server2_uuid%' AND WRITE_CONSENSUS_LEADERS_ACTUAL LIKE '%$server3_uuid%'`
--let $assert_cond = "$num_rows" = "1"
--source include/assert.inc
--let $assert_text = Single Leader must be disabled
--let $assert_cond = "[SELECT WRITE_CONSENSUS_SINGLE_LEADER_CAPABLE from performance_schema.replication_group_communication_information]" = "0"
--source include/assert.inc
# Verify preferred and active members of member 2
--let $rpl_connection_name= server2
--source include/rpl_connection.inc
--let $assert_text = All members should be in WRITE_CONSENSUS_LEADERS_PREFERRED
--let $num_rows = `SELECT COUNT(*) FROM performance_schema.replication_group_communication_information WHERE WRITE_CONSENSUS_LEADERS_PREFERRED LIKE '%$server1_uuid%' AND WRITE_CONSENSUS_LEADERS_PREFERRED LIKE '%$server2_uuid%' AND WRITE_CONSENSUS_LEADERS_PREFERRED LIKE '%$server3_uuid%'`
--let $assert_cond = "$num_rows" = "1"
--source include/assert.inc
--let $assert_text = All members should be in WRITE_CONSENSUS_LEADERS_ACTUAL
--let $num_rows = `SELECT COUNT(*) FROM performance_schema.replication_group_communication_information WHERE WRITE_CONSENSUS_LEADERS_ACTUAL LIKE '%$server1_uuid%' AND WRITE_CONSENSUS_LEADERS_ACTUAL LIKE '%$server2_uuid%' AND WRITE_CONSENSUS_LEADERS_ACTUAL LIKE '%$server3_uuid%'`
--let $assert_cond = "$num_rows" = "1"
--source include/assert.inc
--let $assert_text = Single Leader must be disabled
--let $assert_cond = "[SELECT WRITE_CONSENSUS_SINGLE_LEADER_CAPABLE from performance_schema.replication_group_communication_information]" = "0"
--source include/assert.inc
# Verify preferred and active members of member 3
--let $rpl_connection_name= server3
--source include/rpl_connection.inc
--let $assert_text = All members should be in WRITE_CONSENSUS_LEADERS_PREFERRED
--let $num_rows = `SELECT COUNT(*) FROM performance_schema.replication_group_communication_information WHERE WRITE_CONSENSUS_LEADERS_PREFERRED LIKE '%$server1_uuid%' AND WRITE_CONSENSUS_LEADERS_PREFERRED LIKE '%$server2_uuid%' AND WRITE_CONSENSUS_LEADERS_PREFERRED LIKE '%$server3_uuid%'`
--let $assert_cond = "$num_rows" = "1"
--source include/assert.inc
--let $assert_text = All members should be in WRITE_CONSENSUS_LEADERS_ACTUAL
--let $num_rows = `SELECT COUNT(*) FROM performance_schema.replication_group_communication_information WHERE WRITE_CONSENSUS_LEADERS_ACTUAL LIKE '%$server1_uuid%' AND WRITE_CONSENSUS_LEADERS_ACTUAL LIKE '%$server2_uuid%' AND WRITE_CONSENSUS_LEADERS_ACTUAL LIKE '%$server3_uuid%'`
--let $assert_cond = "$num_rows" = "1"
--source include/assert.inc
--let $assert_text = Single Leader must be disabled
--let $assert_cond = "[SELECT WRITE_CONSENSUS_SINGLE_LEADER_CAPABLE from performance_schema.replication_group_communication_information]" = "0"
--source include/assert.inc
# Elect member 2
--let $rpl_connection_name= server2
--source include/rpl_connection.inc
--let $server2_uuid = `SELECT @@server_uuid`
--eval SELECT group_replication_switch_to_multi_primary_mode()
--replace_result $server2_uuid MEMBER2_UUID
--eval SELECT group_replication_switch_to_single_primary_mode("$server2_uuid")
--let $wait_condition = SELECT COUNT(*)=1 FROM performance_schema.replication_group_members WHERE MEMBER_ID = "$server2_uuid" AND MEMBER_ROLE = 'PRIMARY'
--source include/wait_condition.inc
# Verify preferred and active members of member 2
--let $assert_text = All members should be in WRITE_CONSENSUS_LEADERS_PREFERRED
--let $num_rows = `SELECT COUNT(*) FROM performance_schema.replication_group_communication_information WHERE WRITE_CONSENSUS_LEADERS_PREFERRED LIKE '%$server1_uuid%' AND WRITE_CONSENSUS_LEADERS_PREFERRED LIKE '%$server2_uuid%' AND WRITE_CONSENSUS_LEADERS_PREFERRED LIKE '%$server3_uuid%'`
--let $assert_cond = "$num_rows" = "1"
--source include/assert.inc
--let $assert_text = All members should be in WRITE_CONSENSUS_LEADERS_ACTUAL
--let $num_rows = `SELECT COUNT(*) FROM performance_schema.replication_group_communication_information WHERE WRITE_CONSENSUS_LEADERS_ACTUAL LIKE '%$server1_uuid%' AND WRITE_CONSENSUS_LEADERS_ACTUAL LIKE '%$server2_uuid%' AND WRITE_CONSENSUS_LEADERS_ACTUAL LIKE '%$server3_uuid%'`
--let $assert_cond = "$num_rows" = "1"
--source include/assert.inc
# Verify preferred and active members of member 1
--let $rpl_connection_name= server1
--source include/rpl_connection.inc
--let $assert_text = All members should be in WRITE_CONSENSUS_LEADERS_PREFERRED
--let $num_rows = `SELECT COUNT(*) FROM performance_schema.replication_group_communication_information WHERE WRITE_CONSENSUS_LEADERS_PREFERRED LIKE '%$server1_uuid%' AND WRITE_CONSENSUS_LEADERS_PREFERRED LIKE '%$server2_uuid%' AND WRITE_CONSENSUS_LEADERS_PREFERRED LIKE '%$server3_uuid%'`
--let $assert_cond = "$num_rows" = "1"
--source include/assert.inc
--let $assert_text = All members should be in WRITE_CONSENSUS_LEADERS_ACTUAL
--let $num_rows = `SELECT COUNT(*) FROM performance_schema.replication_group_communication_information WHERE WRITE_CONSENSUS_LEADERS_ACTUAL LIKE '%$server1_uuid%' AND WRITE_CONSENSUS_LEADERS_ACTUAL LIKE '%$server2_uuid%' AND WRITE_CONSENSUS_LEADERS_ACTUAL LIKE '%$server3_uuid%'`
--let $assert_cond = "$num_rows" = "1"
--source include/assert.inc
# Verify preferred and active members of member 3
--let $rpl_connection_name= server3
--source include/rpl_connection.inc
--let $assert_text = All members should be in WRITE_CONSENSUS_LEADERS_PREFERRED
--let $num_rows = `SELECT COUNT(*) FROM performance_schema.replication_group_communication_information WHERE WRITE_CONSENSUS_LEADERS_PREFERRED LIKE '%$server1_uuid%' AND WRITE_CONSENSUS_LEADERS_PREFERRED LIKE '%$server2_uuid%' AND WRITE_CONSENSUS_LEADERS_PREFERRED LIKE '%$server3_uuid%'`
--let $assert_cond = "$num_rows" = "1"
--source include/assert.inc
--let $assert_text = All members should be in WRITE_CONSENSUS_LEADERS_ACTUAL
--let $num_rows = `SELECT COUNT(*) FROM performance_schema.replication_group_communication_information WHERE WRITE_CONSENSUS_LEADERS_ACTUAL LIKE '%$server1_uuid%' AND WRITE_CONSENSUS_LEADERS_ACTUAL LIKE '%$server2_uuid%' AND WRITE_CONSENSUS_LEADERS_ACTUAL LIKE '%$server3_uuid%'`
--let $assert_cond = "$num_rows" = "1"
--source include/assert.inc
# Elect member 3
--let $rpl_connection_name= server3
--source include/rpl_connection.inc
--let $server3_uuid = `SELECT @@server_uuid`
--eval SELECT group_replication_switch_to_multi_primary_mode()
--replace_result $server3_uuid MEMBER3_UUID
--eval SELECT group_replication_switch_to_single_primary_mode("$server3_uuid")
--let $wait_condition = SELECT COUNT(*)=1 FROM performance_schema.replication_group_members WHERE MEMBER_ID = "$server3_uuid" AND MEMBER_ROLE = 'PRIMARY'
--source include/wait_condition.inc
# Verify preferred and active members of member 3
--let $assert_text = All members should be in WRITE_CONSENSUS_LEADERS_PREFERRED
--let $num_rows = `SELECT COUNT(*) FROM performance_schema.replication_group_communication_information WHERE WRITE_CONSENSUS_LEADERS_PREFERRED LIKE '%$server1_uuid%' AND WRITE_CONSENSUS_LEADERS_PREFERRED LIKE '%$server2_uuid%' AND WRITE_CONSENSUS_LEADERS_PREFERRED LIKE '%$server3_uuid%'`
--let $assert_cond = "$num_rows" = "1"
--source include/assert.inc
--let $assert_text = All members should be in WRITE_CONSENSUS_LEADERS_ACTUAL
--let $num_rows = `SELECT COUNT(*) FROM performance_schema.replication_group_communication_information WHERE WRITE_CONSENSUS_LEADERS_ACTUAL LIKE '%$server1_uuid%' AND WRITE_CONSENSUS_LEADERS_ACTUAL LIKE '%$server2_uuid%' AND WRITE_CONSENSUS_LEADERS_ACTUAL LIKE '%$server3_uuid%'`
--let $assert_cond = "$num_rows" = "1"
--source include/assert.inc
# Verify preferred and active members of member 1
--let $rpl_connection_name= server1
--source include/rpl_connection.inc
--let $assert_text = All members should be in WRITE_CONSENSUS_LEADERS_PREFERRED
--let $num_rows = `SELECT COUNT(*) FROM performance_schema.replication_group_communication_information WHERE WRITE_CONSENSUS_LEADERS_PREFERRED LIKE '%$server1_uuid%' AND WRITE_CONSENSUS_LEADERS_PREFERRED LIKE '%$server2_uuid%' AND WRITE_CONSENSUS_LEADERS_PREFERRED LIKE '%$server3_uuid%'`
--let $assert_cond = "$num_rows" = "1"
--source include/assert.inc
--let $assert_text = All members should be in WRITE_CONSENSUS_LEADERS_ACTUAL
--let $num_rows = `SELECT COUNT(*) FROM performance_schema.replication_group_communication_information WHERE WRITE_CONSENSUS_LEADERS_ACTUAL LIKE '%$server1_uuid%' AND WRITE_CONSENSUS_LEADERS_ACTUAL LIKE '%$server2_uuid%' AND WRITE_CONSENSUS_LEADERS_ACTUAL LIKE '%$server3_uuid%'`
--let $assert_cond = "$num_rows" = "1"
--source include/assert.inc
# Verify preferred and active members of member 2
--let $rpl_connection_name= server2
--source include/rpl_connection.inc
--let $assert_text = All members should be in WRITE_CONSENSUS_LEADERS_PREFERRED
--let $num_rows = `SELECT COUNT(*) FROM performance_schema.replication_group_communication_information WHERE WRITE_CONSENSUS_LEADERS_PREFERRED LIKE '%$server1_uuid%' AND WRITE_CONSENSUS_LEADERS_PREFERRED LIKE '%$server2_uuid%' AND WRITE_CONSENSUS_LEADERS_PREFERRED LIKE '%$server3_uuid%'`
--let $assert_cond = "$num_rows" = "1"
--source include/assert.inc
--let $assert_text = All members should be in WRITE_CONSENSUS_LEADERS_ACTUAL
--let $num_rows = `SELECT COUNT(*) FROM performance_schema.replication_group_communication_information WHERE WRITE_CONSENSUS_LEADERS_ACTUAL LIKE '%$server1_uuid%' AND WRITE_CONSENSUS_LEADERS_ACTUAL LIKE '%$server2_uuid%' AND WRITE_CONSENSUS_LEADERS_ACTUAL LIKE '%$server3_uuid%'`
--let $assert_cond = "$num_rows" = "1"
--source include/assert.inc
--echo
--echo ####
--echo # 4) Cleanup.
--echo ####
--echo
--let $rpl_connection_name= server3
--source include/rpl_connection.inc
--eval SET GLOBAL group_replication_paxos_single_leader = "ON"
--let $rpl_connection_name= server2
--source include/rpl_connection.inc
--eval SET GLOBAL group_replication_paxos_single_leader = "ON"
--let $rpl_connection_name= server1
--source include/rpl_connection.inc
--eval SET GLOBAL group_replication_paxos_single_leader = "ON"
--let $rpl_connection_name= server1
--source include/rpl_connection.inc
--source include/stop_group_replication.inc
--let $rpl_group_replication_single_primary_mode=1
--let $rpl_group_replication_reset_persistent_vars=1
--source include/group_replication_end.inc
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