mariadb/mysql-test/suite/galera/t/galera_bf_kill_debug.test

--source include/galera_cluster.inc
--source include/have_innodb.inc
--source include/have_debug.inc
--source include/have_debug_sync.inc

#
# Test case 7:
# 1. Start a transaction on node_2,
#    and leave it pending while holding a row locked
# 2. set sync point pause applier
# 3. send a conflicting write on node_1, it will pause
#    at the sync point
# 4. though another connection to node_2, kill the local
#    transaction
#

--connection node_2
CREATE TABLE t1(a int not null primary key auto_increment,b int) engine=InnoDB;
insert into t1 values (NULL,1);

#
# connection node_2a runs a local transaction, that is victim of BF abort
# and victim of KILL command by connection node_2
#
--connect node_2a, 127.0.0.1, root, , test, $NODE_MYPORT_2
--connection node_2a
truncate t1;
insert into t1 values (1,0);

# start a transaction that will conflict with later applier
begin;
update t1 set b=2 where a=1;

--connection node_2
set session wsrep_sync_wait=0;
--let $wait_condition = SELECT COUNT(*) = 1 FROM INFORMATION_SCHEMA.PROCESSLIST WHERE USER = 'root' AND COMMAND = 'Sleep' LIMIT 1
--source include/wait_condition.inc

--let $k_thread = `SELECT ID FROM INFORMATION_SCHEMA.PROCESSLIST WHERE USER = 'root' AND COMMAND = 'Sleep' LIMIT 1`

# connection node_2b is for controlling debug syn points
# first set a sync point for applier, to pause during BF aborting
# and before THD::awake would be called
#
--connect node_2b, 127.0.0.1, root, , test, $NODE_MYPORT_2
--connection node_2b
SET GLOBAL debug_dbug = "d,sync.before_wsrep_thd_abort";

#
# replicate an update, which will BF abort the victim node_2a
# however, while applier in node 2 is handling the abort,
# it will pause in sync point set by node_2b
#
--connection node_1
select * from t1;
update t1 set b= 1 where a=1;

#
# wait until the applying of above update has reached the sync point
# in node 2
#
--connection node_2b
SET SESSION DEBUG_SYNC = "now WAIT_FOR sync.before_wsrep_thd_abort_reached";

--connection node_2
#
# pause KILL execution before awake
#
SET DEBUG_SYNC= 'wsrep_kill_before_awake_no_mutex SIGNAL awake_reached WAIT_FOR continue_kill';
--disable_query_log
--send_eval KILL $k_thread
--enable_query_log


--connection node_2b
SET DEBUG_SYNC='now WAIT_FOR awake_reached';

# release applier and KILL operator
SET GLOBAL debug_dbug = "";
SET DEBUG_SYNC = "now SIGNAL signal.before_wsrep_thd_abort";

--connection node_1
COMMIT;

--connection node_2b
SET DEBUG_SYNC = "now SIGNAL continue_kill";

--connection node_2
--reap

--connection node_2a
--error 0,1213,2013,2026
select * from t1;

--connection node_2b
SET DEBUG_SYNC = "RESET";

drop table t1;

--disconnect node_2a
#
# Test case 7:
# run a transaction in node 2, and set a sync point to pause the transaction
# in commit phase.
# Through another connection to node 2, kill the committing transaction by
# KILL QUERY command
#

--connect node_2a, 127.0.0.1, root, , test, $NODE_MYPORT_2
--connection node_2a
--let $connection_id = `SELECT CONNECTION_ID()`

CREATE TABLE t1 (i int primary key) engine=innodb;

# Set up sync point
SET DEBUG_SYNC = "before_wsrep_ordered_commit SIGNAL bwoc_reached WAIT_FOR bwoc_continue";

# Send insert which will block in the sync point above
--send INSERT INTO t1 VALUES (1)

--connection node_2
SET DEBUG_SYNC = "now WAIT_FOR bwoc_reached";

--disable_query_log
--disable_result_log
# victim has passed the point of no return, kill is not possible anymore
--eval KILL QUERY $connection_id
--enable_result_log
--enable_query_log

SET DEBUG_SYNC = "now SIGNAL bwoc_continue";
--connection node_2a
--error 0,1213,2013,2026
--reap

--connection node_2
SET DEBUG_SYNC='RESET';
# victim was able to complete the INSERT
select * from t1;

--disconnect node_2a
--disconnect node_2b

--connection node_1
drop table t1;