summaryrefslogtreecommitdiff
path: root/mysql-test/main/flush.test
blob: 6d76196bf5474925581e494cee88400e2b693368 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
connect (con1,localhost,root,,);
connect (con2,localhost,root,,);
connection con1;

--disable_warnings
drop table if exists t1,t2;
drop database if exists mysqltest;
--enable_warnings

create temporary table t1(n int not null primary key);
create table t2(n int);
insert into t2 values(3);
let $1=100;
disable_query_log;
while ($1)
{
 connection con1;
 send replace into t1 select n from t2;
 connection con2;
 send flush tables;
 connection con1;
 reap;
 connection con2;
 reap;
 dec $1;
}
enable_query_log;
connection con1;
select * from t1;
connection con2;
flush tables with read lock and disable checkpoint;
--error 1223
drop table t2;
connection con1;
send drop table t2;
connection con2;
unlock tables;
connection con1;
reap;

#test if drop database will wait until we release the global read lock
connection con1;
create database mysqltest;
create table mysqltest.t1(n int);
insert into mysqltest.t1 values (23);
flush tables with read lock;
connection con2;
send drop database mysqltest;
connection con1;
select * from mysqltest.t1;
unlock tables;
connection con2;
reap;

# test if dirty close releases global read lock
connection con1;
create table t1 (n int);
flush tables with read lock;
dirty_close con1;
connection con2;
insert into t1 values (345);
select * from t1;
drop table t1;

#
# Bug#9459 - deadlock with flush with lock, and lock table write
#
create table t1 (c1 int);
lock table t1 write;
# Cannot get the global read lock with write locked tables.
--error ER_LOCK_OR_ACTIVE_TRANSACTION 
flush tables with read lock;
lock table t1 read;
# Cannot get the global read lock with read locked tables.
--error ER_LOCK_OR_ACTIVE_TRANSACTION
flush tables with read lock;
unlock tables;
flush tables with read lock;
--error 1223
lock table t1 write;
lock table t1 read;
--error 1223
lock table t1 write;
# Release all table locks and the global read lock.
unlock tables;
create table t2 (c1 int);
create table t3 (c1 int);
lock table t1 read, t2 read, t3 write;
# Cannot get the global read lock with write locked tables.
--error ER_LOCK_OR_ACTIVE_TRANSACTION
flush tables with read lock;
lock table t1 read, t2 read, t3 read;
# Cannot get the global read lock with read locked tables.
--error ER_LOCK_OR_ACTIVE_TRANSACTION
flush tables with read lock;
unlock tables;
drop table t1, t2, t3;

# End of 4.1 tests

#
# Test of deadlock problem when doing FLUSH TABLE with read lock
# (Bug was in NTPL threads in Linux when using different mutex while
#  waiting for a condtion variable)

create table t1 (c1 int);
create table t2 (c1 int);

connect (con1,localhost,root,,);
connect (con3,localhost,root,,);

connection con1;
lock table t1 write;

connection con2;
send flush tables with read lock;
--sleep 1

connection con3;
send insert into t2 values(1);
--sleep 1

connection con1;
unlock tables;
disconnect con1;

connection con2;
reap;
disconnect con2;

connection con3;
# It hangs here (insert into t2 does not end).
reap;
disconnect con3;

connection default;
drop table t1, t2;

#
# Bug#32528 Global read lock with a low priority write lock causes a server crash
#

--disable_warnings
drop table if exists t1, t2;
--enable_warnings

set session low_priority_updates=1;

create table t1 (a int);
create table t2 (b int);

lock tables t1 write;
--error ER_LOCK_OR_ACTIVE_TRANSACTION
flush tables with read lock;
unlock tables;

lock tables t1 read, t2 write;
--error ER_LOCK_OR_ACTIVE_TRANSACTION
flush tables with read lock;
unlock tables;

lock tables t1 read;
--error ER_LOCK_OR_ACTIVE_TRANSACTION
flush tables with read lock;
unlock tables;

drop table t1, t2;

set session low_priority_updates=default;

#
# Bug #33334 mysqltest_embedded crashes when disconnecting before reap
#

connect (con1,localhost,root,,);
send select benchmark(200, (select sin(1))) > 1000;
disconnect con1;
--source include/wait_until_disconnected.inc
connection default;

--echo End of 5.0 tests

#
# Bug #26380: LOCK TABLES + FLUSH LOGS causes deadlock
#
set @old_general_log= @@general_log;
set @old_read_only= @@read_only;
set global general_log= on;

flush tables with read lock;
flush logs;
unlock tables;

set global read_only=1;
flush logs;
unlock tables;

flush tables with read lock;
flush logs;
unlock tables;

set global general_log= @old_general_log;
set global read_only= @old_read_only;

--echo End of 5.1 tests


--echo #
--echo # Additional test for bug #51136 "Crash in pthread_rwlock_rdlock
--echo #                                 on TEMPORARY + HANDLER + LOCK + SP".
--echo # Also see the main test for this bug in include/handler.inc.
--echo #
--disable_warnings
drop tables if exists t1, t2;
--enable_warnings
create table t1 (i int);
create temporary table t2 (j int);
flush tables with read lock;
lock table t2 read;
--echo # This commit should not release any MDL locks.
commit;
--echo # The below statement crashed before the bug fix as it
--echo # has attempted to release global shared metadata lock
--echo # which was already released by commit.
unlock tables;
drop tables t1, t2;



--echo # 
--echo # Tests for WL#5000  FLUSH TABLES|TABLE table_list WITH READ LOCK
--echo #
--echo # I. Check the incompatible changes in the grammar.
--echo #
--error ER_PARSE_ERROR
flush tables with read lock, hosts;
--error ER_PARSE_ERROR
flush privileges, tables;
--error ER_PARSE_ERROR
flush privileges, tables with read lock;
--error ER_PARSE_ERROR
flush privileges, tables;
--error ER_PARSE_ERROR
flush tables with read lock, tables;
show tables;
--echo #
--echo # II. Check the allowed syntax.
--echo #
--disable_warnings
drop table if exists t1, t2, t3;
--enable_warnings
create table t1 (a int);
create table t2 (a int);
create table t3 (a int);
lock table t1 read, t2 read;
--error ER_LOCK_OR_ACTIVE_TRANSACTION
flush tables with read lock;
unlock tables;
flush tables with read lock;
flush tables t1, t2 with read lock;
--error ER_LOCK_OR_ACTIVE_TRANSACTION
flush tables t1, t2 with read lock;
--error ER_LOCK_OR_ACTIVE_TRANSACTION
flush tables with read lock;
select * from t1;
select * from t2;
--error ER_TABLE_NOT_LOCKED
select * from t3;
--error ER_TABLE_NOT_LOCKED_FOR_WRITE
insert into t1 (a) values (1);
--error ER_TABLE_NOT_LOCKED_FOR_WRITE
insert into t2 (a) values (1);
--error ER_TABLE_NOT_LOCKED
insert into t3 (a) values (1);
--error ER_NO_SUCH_TABLE
lock table no_such_table read;
--echo #
--echo # We implicitly left the locked tables
--echo # mode but still have the read lock.
--echo # 
--error ER_CANT_UPDATE_WITH_READLOCK
insert into t2 (a) values (1);
unlock tables;
insert into t1 (a) values (1);
insert into t2 (a) values (1);
flush table t1, t2 with read lock;
select * from t1;
select * from t2;
--error ER_TABLE_NOT_LOCKED
select * from t3;
--error ER_TABLE_NOT_LOCKED_FOR_WRITE
insert into t1 (a) values (2);
--error ER_TABLE_NOT_LOCKED_FOR_WRITE
insert into t2 (a) values (2);
--error ER_TABLE_NOT_LOCKED
insert into t3 (a) values (2);
--error ER_NO_SUCH_TABLE
lock table no_such_table read;
insert into t3 (a) values (2);


--echo # 
--echo # III. Concurrent tests.
--echo #
connect (con1,localhost,root,,);
--echo #
--echo # Check that flush tables <list> with read lock
--echo # does not affect non-locked tables.
connection default;
--echo #
flush tables t1 with read lock;
connection con1;
select * from t1;
select * from t2;
insert into t2 (a) values (3);
connection default;
unlock tables;
--echo #
--echo # Check that "FLUSH TABLES <list> WITH READ LOCK" is
--echo # compatible with active "FLUSH TABLES WITH READ LOCK".
--echo # Vice versa it is not true, since tables read-locked by
--echo # "FLUSH TABLES <list> WITH READ LOCK" can't be flushed.
flush tables with read lock;
connection con1;
flush table t1 with read lock;
select * from t1;
unlock tables;
connection default;
unlock tables;
--echo #
--echo # Check that FLUSH TABLES t1 WITH READ LOCK
--echo # does not conflict with an existing FLUSH TABLES t2
--echo # WITH READ LOCK.
--echo #
flush table t1 with read lock;
connection con1;
flush table t2 with read lock;
unlock tables;
connection default;
unlock tables;
--echo #
--echo # Check that FLUSH TABLES t1 WITH READ LOCK
--echo # does not conflict with SET GLOBAL read_only=1.
--echo #
set global read_only=1;
connection con1;
flush table t1 with read lock;
unlock tables;
connection default;
set global read_only=0;
--echo #
--echo # Check that it's possible to read-lock 
--echo # tables locked with FLUSH TABLE <list> WITH READ LOCK.
--echo #
flush tables t1, t2 with read lock;
connection con1;
lock table t1 read, t2 read;
unlock tables;
connection default;
unlock tables;

connection con1;
disconnect con1;
--source include/wait_until_disconnected.inc
connection default;
drop table t1, t2, t3;

--echo #
--echo # Bug#51710 FLUSH TABLES <view> WITH READ LOCK kills the server
--echo #
--disable_warnings
drop view if exists v1, v2, v3;
drop table if exists t1, v1;
--enable_warnings
create table t1 (a int);
create view v1 as select 1;
create view v2 as select * from t1;
create view v3 as select * from v2;

--error ER_WRONG_OBJECT
flush table v1, v2, v3 with read lock;
--error ER_WRONG_OBJECT
flush table v1 with read lock;
--error ER_WRONG_OBJECT
flush table v2 with read lock;
--error ER_WRONG_OBJECT
flush table v3 with read lock;
create temporary table v1 (a int);
--error ER_WRONG_OBJECT
flush table v1 with read lock;
drop view v1;
create table v1 (a int);
flush table v1 with read lock;
drop temporary table v1;
unlock tables;
drop view v2, v3;
drop table t1, v1;


--echo # 
--echo # FLUSH TABLES <list> WITH READ LOCK and HANDLER
--echo # 
--disable_warnings
drop table if exists t1;
--enable_warnings
create table t1 (a int, key a (a));
insert into t1 (a) values (1), (2), (3);
handler t1 open;
handler t1 read a next;
handler t1 read a next;
flush tables t1 with read lock;
--error ER_LOCK_OR_ACTIVE_TRANSACTION
handler t1 read a next;
unlock tables;
handler t1 read a next;
handler t1 close;
drop table t1;

--echo #
--echo # Bug#52117 Pending FLUSH TALBES <list> aborts
--echo # transactions unnecessarily.
--echo #
--disable_warnings
drop table if exists t1;
--enable_warnings
connect (con1,localhost,root,,);
connect (con2,localhost,root,,);
connection default;

create table t1 (a int);
begin;
select * from t1;
connection con1;
--echo # 
--echo # Issue a LOCK TABLE t1 READ. We could use HANDLER t1 OPEN
--echo # or a long-running select -- anything that
--echo # prevents FLUSH TABLE t1 from immediate completion would do.
--echo #
lock table t1 read;
connection con2;
--echo #
--echo # FLUSH TABLE expels the table definition from the cache.
--echo # Sending 'flush table t1'...
send flush table t1;
connection default;
--echo # Let flush table sync in.
let $wait_condition=
  select count(*) = 1 from information_schema.processlist
  where state = "Waiting for table metadata lock"
  and info = "flush table t1";
--source include/wait_condition.inc
select * from t1;
connection con1;
select * from t1;
unlock tables;
connection default;
select count(*) from information_schema.processlist where state = "Waiting for table metadata lock";
commit;
connection con2;
--echo # Reaping 'flush table t1'...
reap;
connection default;

--echo #
--echo # Repeat the same test but with FLUSH TABLES
--echo #

begin;
select * from t1;
connection con1;
--echo # 
--echo # Issue a LOCK TABLE t1 READ.
--echo #
lock table t1 read;
connection con2;
send flush tables;
connection default;
select * from t1;
connection con1;
select * from t1;
unlock tables;
connection con2;
--echo # Reaping 'flush tables'...
reap;
connection default;
commit;

--echo # Cleanup

connection con1;
disconnect con1;
--source include/wait_until_disconnected.inc
connection con2;
disconnect con2;
--source include/wait_until_disconnected.inc
connection default;
drop table t1;


--echo #
--echo # Test for bug #55273 "FLUSH TABLE tm WITH READ LOCK for Merge table
--echo #                      causes assert failure".
--echo #
--disable_warnings
drop table if exists t1, t2, tm;
--enable_warnings
create table t1 (i int);
create table t2 (i int);
create table tm (i int) engine=merge union=(t1, t2);
insert into t1 values (1), (2);
insert into t2 values (3), (4);
--echo # The below statement should succeed and lock merge
--echo # table for read. Only merge table gets flushed and
--echo # not underlying tables.
flush tables tm with read lock;
select * from tm;
--echo # Check that underlying tables are locked.
select * from t1;
select * from t2;
unlock tables;
--echo # This statement should succeed as well and flush
--echo # all tables in the list.
flush tables tm, t1, t2 with read lock;
select * from tm;
--echo # Naturally, underlying tables should be locked in this case too.
select * from t1;
select * from t2;
unlock tables;
drop tables tm, t1, t2;


--echo #
--echo # Test for bug #57006 "Deadlock between HANDLER and
--echo #                      FLUSH TABLES WITH READ LOCK".
--echo #
--disable_warnings
drop table if exists t1, t2;
--enable_warnings
connect (con1,localhost,root,,);
connect (con2,localhost,root,,);
connection default;
create table t1 (i int);
create table t2 (i int);
handler t1 open;

connection con1;
flush tables with read lock;
connection default;
--echo # The below statement should not cause deadlock.
--echo # Sending:
--send insert into t2 values (1)

connection con2;
--echo # Wait until INSERT starts to wait for FTWRL to go away.
let $wait_condition=
  select count(*) = 1 from information_schema.processlist
  where state = "Waiting for backup lock"
  and info = "insert into t2 values (1)";
--source include/wait_condition.inc

connection con1;
unlock tables;

connection default;
--echo # Reap INSERT.
--reap
handler t1 close;

--echo # Cleanup.
connection con1;
disconnect con1;
--source include/wait_until_disconnected.inc
connection con2;
disconnect con2;
--source include/wait_until_disconnected.inc
connection default;
drop tables t1, t2;


--echo #
--echo # Bug#57649 FLUSH TABLES under FLUSH TABLES <list> WITH READ LOCK leads
--echo #           to assert failure.
--echo #

--disable_warnings
DROP TABLE IF EXISTS t1;
--enable_warnings

CREATE TABLE t1 (a INT);
FLUSH TABLES t1 WITH READ LOCK;

# All these triggered the assertion
--error ER_TABLE_NOT_LOCKED_FOR_WRITE
FLUSH TABLES;
--error ER_TABLE_NOT_LOCKED_FOR_WRITE
CREATE TRIGGER t1_bi BEFORE INSERT ON t1 FOR EACH ROW SET @a= 1;
--error ER_TABLE_NOT_LOCKED_FOR_WRITE
ALTER TABLE t1 COMMENT 'test';

UNLOCK TABLES;
DROP TABLE t1;


--echo #
--echo # Test for bug #12641342 - "61401: UPDATE PERFORMANCE DEGRADES
--echo #                           GRADUALLY IF A TRIGGER EXISTS".
--echo #
--echo # One of side-effects of this bug was that a transaction which
--echo # involved DML statements requiring prelocking blocked concurrent
--echo # FLUSH TABLES WITH READ LOCK for the whole its duration, while
--echo # correct behavior in this case is to block FTWRL only for duration
--echo # of individual DML statements.
--disable_warnings
DROP TABLE IF EXISTS t1;
--enable_warnings
CREATE TABLE t1 (id INT PRIMARY KEY, value INT);
INSERT INTO t1 VALUES (1, 1);
CREATE TRIGGER t1_au AFTER UPDATE ON t1 FOR EACH ROW SET @var = "a";
BEGIN;
UPDATE t1 SET value= value + 1 WHERE id = 1;

connect(con1, localhost, root);
--echo # The below FLUSH TABLES WITH READ LOCK should succeed and
--echo # should not be blocked by the transaction in default connection.
FLUSH TABLES WITH READ LOCK;
UNLOCK TABLES;
disconnect con1;
--source include/wait_until_disconnected.inc

connection default;
COMMIT;
DROP TABLE t1;

--echo #
--echo # Test flushing slave or relay logs twice
--echo #
--error ER_WRONG_USAGE
flush relay logs,relay logs;
--error ER_WRONG_USAGE
flush slave,slave;

--echo #
--echo # MDEV-15890 Strange error message if you try to
--echo #     FLUSH TABLES <view> after LOCK TABLES <view>.
--echo #

CREATE TABLE t1 (qty INT, price INT);
CREATE VIEW v1 AS SELECT qty, price, qty*price AS value FROM t1;

LOCK TABLES v1 READ;
--error ER_TABLE_NOT_LOCKED_FOR_WRITE
FLUSH TABLES v1;
UNLOCK TABLES;

LOCK TABLES v1 WRITE;
FLUSH TABLES v1;
UNLOCK TABLES;

LOCK TABLES v1 READ;
--error ER_TABLE_NOT_LOCKED_FOR_WRITE
FLUSH TABLES t1;
UNLOCK TABLES;

LOCK TABLES t1 READ;
--error ER_TABLE_NOT_LOCKED
FLUSH TABLES v1;
UNLOCK TABLES;

DROP VIEW v1;
DROP TABLE t1;

--echo #
--echo # Test FLUSH THREADS
--echo #

flush threads;
show status like "Threads_cached";