mariadb/mysql-test/include/wait_condition_with_debug.inc
Jan Lindström ec49976e38 MDEV-19746: Galera test failures because of wsrep_slave_threads identification
Problem was that tests select INFORMATION_SCHEMA.PROCESSLIST processes
from user system user and empty state. Thus, there is not clear
state for slave threads.

Changes:
- Added new status variables that store current amount of applier threads
(wsrep_applier_thread_count) and rollbacker threads
(wsrep_rollbacker_thread_count). This will make clear how many slave threads
of certain type there is.
- Added THD state "wsrep applier idle" when applier slave thread is
waiting for work. This makes finding slave/applier threads easier.
- Added force-restart option for mtr to always restart servers between tests
to avoid race on start of the test
- Added wait_condition_with_debug to wait until the passed statement returns
true, or the operation times out. If operation times out, the additional error
statement will be executed

Changes to be committed:
	new file:   mysql-test/include/force_restart.inc
	new file:   mysql-test/include/wait_condition_with_debug.inc
	modified:   mysql-test/mysql-test-run.pl
	modified:   mysql-test/suite/galera/disabled.def
	modified:   mysql-test/suite/galera/r/MW-336.result
	modified:   mysql-test/suite/galera/r/galera_kill_applier.result
	modified:   mysql-test/suite/galera/r/galera_var_slave_threads.result
	new file:   mysql-test/suite/galera/t/MW-336.cnf
	modified:   mysql-test/suite/galera/t/MW-336.test
	modified:   mysql-test/suite/galera/t/galera_kill_applier.test
	modified:   mysql-test/suite/galera/t/galera_parallel_autoinc_largetrx.test
	modified:   mysql-test/suite/galera/t/galera_parallel_autoinc_manytrx.test
	modified:   mysql-test/suite/galera/t/galera_var_slave_threads.test
	modified:   mysql-test/suite/wsrep/disabled.def
	modified:   mysql-test/suite/wsrep/r/variables.result
	modified:   mysql-test/suite/wsrep/t/variables.test
	modified:   sql/mysqld.cc
	modified:   sql/wsrep_mysqld.cc
	modified:   sql/wsrep_mysqld.h
	modified:   sql/wsrep_thd.cc
	modified:   sql/wsrep_var.cc
2019-07-15 10:17:07 +03:00

69 lines
1.8 KiB
PHP

# include/wait_condition_with_debug.inc
#
# SUMMARY
#
# Waits until the passed statement returns true, or the operation
# times out. If the operation times out, the additional error
# statement will be executed.
#
# USAGE
#
# let $wait_condition=
# SELECT c = 3 FROM t;
# let $wait_condition_on_error_output= select count(*) from t;
# [let $explicit_default_wait_timeout= N] # to override the default reset
# --source include/wait_condition_with_debug.inc
#
# OR
#
# let $wait_timeout= 60; # Override default 30 seconds with 60.
# let $wait_condition=
# SELECT c = 3 FROM t;
# let $wait_condition_on_error_output= select count(*) from t;
# --source include/wait_condition_with_debug.inc
# --echo Executed the test condition $wait_condition_reps times
#
#
# EXAMPLE
# events_bugs.test, events_time_zone.test
#
let $wait_counter= 300;
if ($wait_timeout)
{
let $wait_counter= `SELECT $wait_timeout * 10`;
}
# Reset $wait_timeout so that its value won't be used on subsequent
# calls, and default will be used instead.
if ($explicit_default_wait_timeout)
{
--let $wait_timeout= $explicit_default_wait_timeout
}
if (!$explicit_default_wait_timeout)
{
--let $wait_timeout= 0
}
# Keep track of how many times the wait condition is tested
# This is used by some tests (e.g., main.status)
let $wait_condition_reps= 0;
while ($wait_counter)
{
--error 0,ER_NO_SUCH_TABLE,ER_LOCK_WAIT_TIMEOUT,ER_UNKNOWN_COM_ERROR,ER_LOCK_DEADLOCK
let $success= `$wait_condition`;
inc $wait_condition_reps;
if ($success)
{
let $wait_counter= 0;
}
if (!$success)
{
real_sleep 0.1;
dec $wait_counter;
}
}
if (!$success)
{
echo Timeout in wait_condition.inc for $wait_condition;
--eval $wait_condition_on_error_output
}