#
# MDEV-15443
#
# If transactions are executed into InnoDB without wsrep_on,
# rseg header trx_id gets incremented and the rseg header
# corresponding to maximum trx_id may store undefined wsrep XID.
# When the wsrep XID is read from the storage engine,
# undefined XID may returned instead the valid one.
#
# This test demonstrates the problem by taking a node_2 out
# of the cluster and writing and deleting a row with
# wsrep_on=0. When the bug is present, node_2 will fail to
# rejoin the cluster because an invalid XID is read from the
# storage engine after startup/recovery.
#

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

# Initialize table on node_1
CREATE TABLE t1 (f1 INT PRIMARY KEY) ENGINE=InnoDB;
INSERT INTO t1 VALUES (1);

# Go to node_2, verify that the previous INSERT completed.
# Take node_2 out of the cluster, insert and delete a record
# on a table with wsrep_on.
--connection node_2
SELECT * FROM t1;
SET GLOBAL wsrep_cluster_address='';
SET SESSION wsrep_on=0;
INSERT INTO t1 VALUES (2);
DELETE FROM t1 WHERE f1 = 2;

# Shutdown node_2
--source include/shutdown_mysqld.inc

# On node_1, verify that the node has left the cluster.
--connection node_1
--let $wait_condition = SELECT VARIABLE_VALUE = 1 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size';
--source include/wait_condition.inc

# Insert into t1 to enforce IST on node_2 when it is restarted.
INSERT INTO t1 VALUES (2);

# Restart node_2
--connection node_2
--source include/start_mysqld.inc
--let $wait_condition = SELECT VARIABLE_VALUE = 2 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size';
--source include/wait_condition.inc

--connection node_1
--source include/wait_condition.inc
DROP TABLE t1;