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|
################################################################################
# Check that local pipeline errors are properly detected and handled.
# This test checks that local transactions waiting for certification will
# rollback when the applier encounters an error.
#
# Test:
# 0) The test requires two servers: M1 and M2.
# 1) Create a group with 2 members and bring them ONLINE. On M1 create a table.
# 2) Create a DEBUG point in M1 to force the applier to error out before the
# next certification.
# 3) Do an insert on M1. As the applier will fail and not certify the
# transaction, the query should rollback.
# 4) The query should not be on M1.
# - Assert check that transaction rolled back locally on M1.
# - Assert check M1 is in read mode i.e. super_read_only=1.
# 5) Remove DEBUG point and stop GR on M1. Start GR on M1.
# - Check that after restarting the service, the value is now on the table.
# - Check that GTID_EXECUTED on M1 contains all transactions.
# - Check that GTID_EXECUTED on M2 contains all transactions.
# 6) Cleanup.
################################################################################
--source include/big_test.inc
--source include/have_debug.inc
--source include/have_group_replication_plugin.inc
--source include/group_replication.inc
--echo #
--echo # 2 member group
--echo # Force a pipeline error on certification handler.
--echo #
--let $rpl_connection_name= server1
--source include/rpl_connection.inc
SET SESSION sql_log_bin= 0;
call mtr.add_suppression("Failed to fetch Transaction_context_log_event containing required transaction info for certification");
call mtr.add_suppression("Fatal error during execution on the Applier process of Group Replication. The server will now leave the group.");
call mtr.add_suppression("Error at event handling! Got error: 1");
call mtr.add_suppression("The member is leaving a group without being on one");
call mtr.add_suppression("Due to a plugin error, some transactions were unable to be certified and will now rollback.");
call mtr.add_suppression("The server was automatically set into read only mode after an error was detected.");
call mtr.add_suppression("Error while waiting for conflict detection procedure to finish on session .*");
call mtr.add_suppression("Run function 'before_commit' in plugin 'group_replication' failed");
call mtr.add_suppression("Skipping leave operation: concurrent attempt to leave the group is on-going.");
SET SESSION sql_log_bin= 1;
CREATE TABLE t1 (c1 INT NOT NULL PRIMARY KEY) ENGINE=InnoDB;
SET @@GLOBAL.DEBUG= '+d,certification_handler_force_error_on_pipeline';
--echo #
--echo # Execute a transaction on member 1 causing the applier to error out
--echo # The member should leave the group
--echo #
--error ER_TRANSACTION_ROLLBACK_DURING_COMMIT, ER_RUN_HOOK_ERROR
INSERT INTO t1 VALUES (1);
--echo #
--echo # Wait until member 1 Group Replication applier errors out.
--echo #
--let $wait_condition= SELECT service_state="OFF" FROM performance_schema.replication_applier_status WHERE channel_name="group_replication_applier"
--source include/wait_condition.inc
--let $group_replication_member_state= ERROR
--source include/gr_wait_for_member_state.inc
--echo #
--echo # Assert that the transaction was roll backed locally
--echo #
--let $assert_text= 'There is no value 1 in table t1'
--let $assert_cond= [SELECT COUNT(*) AS count FROM t1 WHERE t1.c1 = 1, count, 1] = 0
--source include/assert.inc
--echo #
--echo # Assert that the read mode is active
--echo #
--let $assert_text= The super_read_only mode should be active.
--let $assert_cond= "[SELECT @@GLOBAL.super_read_only]" = 1;
--source include/assert.inc
--echo #
--echo # Stop the member and join it again.
--echo #
SET @@GLOBAL.DEBUG= '-d,certification_handler_force_error_on_pipeline';
--source include/stop_group_replication.inc
--source include/start_group_replication.inc
--echo #
--echo # Check that table 1 now has a value
--echo #
--let $assert_text= 'There is now a value 1 in table t1'
--let $assert_cond= [SELECT COUNT(*) AS count FROM t1 WHERE t1.c1 = 1, count, 1] = 1
--source include/assert.inc
--echo #
--echo # Check that GTID_EXECUTED on server 1 contains all transactions.
--echo #
--let $assert_text= GTID_EXECUTED must contain all committed GTIDs
--let $assert_cond= "[SELECT @@GLOBAL.GTID_EXECUTED]" = "$group_replication_group_name:1-5"
--source include/assert.inc
--echo #
--echo # Check that GTID_EXECUTED on server 2 contains all transactions.
--echo #
--let $rpl_connection_name= server2
--source include/rpl_connection.inc
--let $assert_text= GTID_EXECUTED must contain all committed GTIDs
--let $assert_cond= "[SELECT @@GLOBAL.GTID_EXECUTED]" = "$group_replication_group_name:1-5"
--source include/assert.inc
--echo #
--echo # Test cleanup.
--echo #
DROP TABLE t1;
--source include/group_replication_end.inc
|
