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#
# Test scenario:
#
# Run an autocommit INSERT and stop the execution after the INSERT
# has released commit order critical section. On another connection,
# run SR transaction which will store one fragment into streaming log.
# If the bug is present, the fragment streaming log commit may
# out of order, and completing INSERT may cause assertion in debug build.
#
# Note that due to nature of this bug, it is may not be possible
# to construct fully deterministic test case which will crash the
# server each time if the bug is present, but will work with fix.
#
--source include/galera_cluster.inc
--source include/have_log_bin.inc
--source include/have_debug_sync.inc
CREATE TABLE t1 (f1 INT PRIMARY KEY);
# Control connection for controlling node_1 debug sync points
--let $galera_connection_name = ctrl
--let $galera_server_number = 1
--source include/galera_connect.inc
# Another connection for SR transaction
--let $galera_connection_name = node_1_sr
--let $galera_server_number = 1
--source include/galera_connect.inc
# Set up sync point and send INSERT
--connection node_1
SET DEBUG_SYNC = "wsrep_after_commit_order_leave SIGNAL acol_reached WAIT_FOR acol_continue";
--send INSERT INTO t1 VALUES (1)
# Wait until INSERT releases commit order
--connection ctrl
SET DEBUG_SYNC = "now WAIT_FOR acol_reached";
# Streaming transaction, will replicate fragment for each row separately.
--connection node_1_sr
SET SESSION wsrep_sync_wait = 0;
SET SESSION wsrep_trx_fragment_unit = 'rows';
SET SESSION wsrep_trx_fragment_size = 1;
START TRANSACTION;
--send INSERT INTO t1 VALUES (2)
--connection ctrl
# Now let the thread node_1 continue after a one second sleep.
# The sleep while not completely deterministic, will allow the SR
# insert to complete the commit out of order in most of the cases if
# the bug is present, leading to assertion in debug build.
--sleep 1
SET DEBUG_SYNC = "now SIGNAL acol_continue";
--connection node_1
--reap
--connection node_1_sr
--reap
ROLLBACK;
--connection ctrl
SET DEBUG_SYNC = "RESET";
--disconnect ctrl
--disconnect node_1_sr
--connection node_1
DROP TABLE t1;
--source include/galera_end.inc
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