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WIP tests for MDEV-39838 to repro the failure

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Co-authored-by: Roel’s AI. The final test should be nearly
all my writing, with those AI parts barely distinguishable.
This commit is contained in:
ParadoxV5
2026-10-11 17:09:02 -06:00
parent 151631b8cf
commit 1336ca9232
4 changed files with 141 additions and 0 deletions
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28
mysql-test/main/log_slow_error.result Normal file
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SET @save_slow_query_log= @@GLOBAL.slow_query_log;
SET @@GLOBAL.slow_query_log= 1;
SET @save_log_slow_verbosity= @@GLOBAL.log_slow_verbosity;
SET @@GLOBAL.log_slow_verbosity= 'warnings';
SET @save_log_slow_query_time= @@GLOBAL.log_slow_query_time;
SET @@GLOBAL.log_slow_query_time= 0;
SET @save_init_slave= @@GLOBAL.init_slave;
SET GLOBAL init_slave= 'GARBAGE';
CHANGE MASTER TO master_host= 'not important';
START SLAVE SQL_THREAD;
include/wait_for_slave_sql_error.inc [errno=1064]
SET @@SESSION.slow_query_log= @@GLOBAL.slow_query_log;
SET @@SESSION.log_slow_verbosity= @@GLOBAL.log_slow_verbosity;
SET @@SESSION.log_slow_query_time= @@GLOBAL.log_slow_query_time;
SELECT CAST('' AS INT);
CAST('' AS INT)
0
GARBAGE;
ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'GARBAGE' at line 1
NOT FOUND /Error 1064/ in mysqld-slow.log
SET @@SESSION.log_slow_query_time= @save_log_slow_query_time;
SET @@SESSION.slow_query_log= @save_slow_query_log;
SET @@SESSION.log_slow_verbosity= @save_log_slow_verbosity;
SET @@GLOBAL.log_slow_query_time= @@SESSION.log_slow_query_time;
SET @@GLOBAL.slow_query_log= @@SESSION.slow_query_log;
SET @@GLOBAL.log_slow_verbosity= @@SESSION.log_slow_verbosity;
RESET SLAVE ALL;
SET GLOBAL init_slave= @save_init_slave;

53
mysql-test/main/log_slow_error.test Normal file
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# MDEV-32203 -> MDEV-39838: Test that the Slow Query Log with
# `@@.log_slow_verbosity='warnings'` correctly ignores errors
--source include/not_embedded.inc # Testing replication thread
# Setup
SET @save_slow_query_log= @@GLOBAL.slow_query_log;
SET @@GLOBAL.slow_query_log= 1;
SET @save_log_slow_verbosity= @@GLOBAL.log_slow_verbosity;
SET @@GLOBAL.log_slow_verbosity= 'warnings';
SET @save_log_slow_query_time= @@GLOBAL.log_slow_query_time;
SET @@GLOBAL.log_slow_query_time= 0;
SET @save_init_slave= @@GLOBAL.init_slave;
SET GLOBAL init_slave= 'GARBAGE';
CHANGE MASTER TO master_host= 'not important';
--let SEARCH_FILE= `SELECT @@slow_query_log_file`
--let SEARCH_PATTERN= Error 1064
# MDEV-39838: use-of-uninitialized-value in Replication
# SQL Thread when the first `@@init_slave` statement fails.
START SLAVE SQL_THREAD;
--let $slave_sql_errno= 1064
--source include/wait_for_slave_sql_error.inc
# TODO MDEV-41474: Errors are not warnings and so should not be logged
SET @@SESSION.slow_query_log= @@GLOBAL.slow_query_log;
SET @@SESSION.log_slow_verbosity= @@GLOBAL.log_slow_verbosity;
SET @@SESSION.log_slow_query_time= @@GLOBAL.log_slow_query_time;
--disable_warnings
# MDEV-39838: leftover warning makes the next statement log errors
SELECT CAST('' AS INT);
--error ER_PARSE_ERROR
GARBAGE;
--enable_warnings
--source include/search_pattern_in_file.inc
# Cleanup
SET @@SESSION.log_slow_query_time= @save_log_slow_query_time;
SET @@SESSION.slow_query_log= @save_slow_query_log;
SET @@SESSION.log_slow_verbosity= @save_log_slow_verbosity;
SET @@GLOBAL.log_slow_query_time= @@SESSION.log_slow_query_time;
SET @@GLOBAL.slow_query_log= @@SESSION.slow_query_log;
SET @@GLOBAL.log_slow_verbosity= @@SESSION.log_slow_verbosity;
RESET SLAVE ALL;
SET GLOBAL init_slave= @save_init_slave;

23
mysql-test/suite/rpl/r/log_slow_error.result Normal file
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include/master-slave.inc
[connection master]
connection slave;
SET @save_slow_query_log= @@GLOBAL.slow_query_log;
SET @@GLOBAL.slow_query_log= 1;
SET @save_log_slow_verbosity= @@GLOBAL.log_slow_verbosity;
SET @@GLOBAL.log_slow_verbosity= 'warnings';
SET @save_log_slow_query_time= @@GLOBAL.log_slow_query_time;
SET @@GLOBAL.log_slow_query_time= 0;
include/start_slave.inc
connection master;
SET STATEMENT sql_log_bin=0 FOR CREATE TABLE t (a INT);
INSERT INTO t VALUES (0);
DROP TABLE t;
connection slave;
include/wait_for_slave_sql_error.inc [errno=1146]
SET @@GLOBAL.log_slow_query_time= @save_log_slow_query_time;
SET @@GLOBAL.slow_query_log= @save_slow_query_log;
SET @@GLOBAL.log_slow_verbosity= @save_log_slow_verbosity;
SET GLOBAL init_slave= @save_init_slave;
SET @@GLOBAL.sql_slave_skip_counter= 1;
START SLAVE SQL_THREAD;
include/rpl_end.inc

37
mysql-test/suite/rpl/t/log_slow_error.test Normal file
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# MDEV-39838 test, but with actual Replication
--let $rpl_skip_start_slave= 1
--source include/master-slave.inc
--connection slave
SET @save_slow_query_log= @@GLOBAL.slow_query_log;
SET @@GLOBAL.slow_query_log= 1;
SET @save_log_slow_verbosity= @@GLOBAL.log_slow_verbosity;
SET @@GLOBAL.log_slow_verbosity= 'warnings';
SET @save_log_slow_query_time= @@GLOBAL.log_slow_query_time;
SET @@GLOBAL.log_slow_query_time= 0;
--source include/start_slave.inc
--connection master
SET STATEMENT sql_log_bin=0 FOR CREATE TABLE t (a INT);
INSERT INTO t VALUES (0);
DROP TABLE t;
--connection slave
# ER_NO_SUCH_TABLE
--let $slave_sql_errno= 1146
--source include/wait_for_slave_sql_error.inc
# Cleanup
SET @@GLOBAL.log_slow_query_time= @save_log_slow_query_time;
SET @@GLOBAL.slow_query_log= @save_slow_query_log;
SET @@GLOBAL.log_slow_verbosity= @save_log_slow_verbosity;
SET GLOBAL init_slave= @save_init_slave;
SET @@GLOBAL.sql_slave_skip_counter= 1;
START SLAVE SQL_THREAD;
--let $rpl_only_running_threads= 1
--source include/rpl_end.inc