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#
# MDEV-25717 Assertion `owning_thread_id_ == wsrep::this_thread::get_id()'
#
# This test exposes a race condition between rollbacker thread and rollback
# fragment processing.
#
--source include/galera_cluster.inc
--source include/have_debug_sync.inc
--connection node_1
CREATE TABLE t1 (f1 INTEGER PRIMARY KEY) Engine=InnoDB;
INSERT INTO t1 VALUES (1), (2), (3);
#
# On node_2 we start a SR transaction, it going to
# be BF aborted later on
#
--connection node_2
SET SESSION wsrep_trx_fragment_size = 1;
START TRANSACTION;
INSERT INTO t1 VALUES (4);
--connection node_1
SELECT COUNT(*) FROM t1; # Sync wait
#
# Issue a conflicting TRUNCATE statement on node_1:
# - on node_2, block it before it is going to apply
# - on node_1, block before the before it BF aborts the INSERT
#
--connect node_2a, 127.0.0.1, root, , test, $NODE_MYPORT_2
--connection node_2a
SET GLOBAL DEBUG_DBUG = "d,sync.wsrep_apply_toi";
--connect node_1a, 127.0.0.1, root, , test, $NODE_MYPORT_1
--connection node_1a
SET GLOBAL DEBUG_DBUG = "d,sync.wsrep_bf_abort";
--connection node_1
--send TRUNCATE TABLE t1
--connection node_1a
SET DEBUG_SYNC = "now WAIT_FOR sync.wsrep_bf_abort_reached";
--connection node_2a
SET DEBUG_SYNC = "now WAIT_FOR sync.wsrep_apply_toi_reached";
#
# Generate one more fragment on the SR transaction.
# This is going to fail certification and results
# in a rollback fragment.
#
--connection node_2
--let $expected_cert_failures = `SELECT VARIABLE_VALUE + 1 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_local_cert_failures'`
--send INSERT INTO t1 VALUES (5)
#
# Wait until after certify and observe the certification
# failure. Let both continue and we are done on node_2.
#
--connection node_2a
SET SESSION wsrep_sync_wait = 0;
--let $wait_condition = SELECT VARIABLE_VALUE = $expected_cert_failures FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_local_cert_failures'
--source include/wait_condition.inc
SET SESSION wsrep_sync_wait = DEFAULT;
SET GLOBAL DEBUG_DBUG = "";
SET DEBUG_SYNC = "now SIGNAL signal.wsrep_apply_toi";
--connection node_2
--error ER_LOCK_DEADLOCK
--reap
#
# On node_1 we expect the following things:
# - the TRUNCATE should successfully bf abort the transaction
# - A rollback fragment should be delivered as a result of
# certification failure. We expect the rollback fragment to
# be delivered after TRUNCATE has bf aborted, therefore rollback
# fragment logs a dummy writeset.
#
--connection node_1a
SET SESSION wsrep_sync_wait=0;
SET GLOBAL DEBUG_DBUG = "+d,sync.wsrep_log_dummy_write_set";
# Signal the TRUNCATE to continue and observe the BF abort
--let $expected_bf_aborts = `SELECT VARIABLE_VALUE + 1 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_local_bf_aborts'`
SET DEBUG_SYNC = "now SIGNAL signal.wsrep_bf_abort";
# Expect a timeout if bug is present
--let $wait_condition = SELECT VARIABLE_VALUE = $expected_bf_aborts FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_local_bf_aborts'
--source include/wait_condition.inc
# Observe logging of dummy writeset
SET DEBUG_SYNC = "now WAIT_FOR sync.wsrep_log_dummy_write_set_reached";
# TRUNCATE succeeds
--connection node_1
--reap
#
# Cleanup
#
--connection node_2
SET GLOBAL DEBUG_DBUG = "";
SET DEBUG_SYNC = "RESET";
--connection node_1
SET GLOBAL DEBUG_DBUG = "";
SET DEBUG_SYNC = "RESET";
DROP TABLE t1;
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