-
Notifications
You must be signed in to change notification settings - Fork 4k
/
Copy pathtest_sql_lock.result
500 lines (474 loc) · 16.1 KB
/
test_sql_lock.result
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
# Creating table t1
CREATE TABLE t1(c1 INT NOT NULL, c2 INT);
INSERT INTO t1 VALUES (1,1), (2,2), (3,1), (4,2), (5,1), (6,2), (7,3);
# Creating table t2
CREATE TABLE t2(c1 INT NOT NULL, c2 INT, PRIMARY KEY(c1));
INSERT INTO t2 VALUES (1,1), (2,2), (3,1), (4,2), (5,1), (6,2), (7,3);
# Count of elements in table t1
SELECT COUNT(*) FROM t1;
COUNT(*)
7
###################################################################
# Run plugin
###################################################################
INSTALL PLUGIN test_sql_lock SONAME 'TEST_SQL_LOCK';
###################################################################
# Stop plugin
###################################################################
UNINSTALL PLUGIN test_sql_lock;
###################################################################
# Plugin log
###################################################################
========================================================================
Test in a server thread
Opening Session 1
Opening Session 2
===================================================================
Isolation Level : READ COMMITTED
===================================================================
-------------------------------------------------------------------
Session 1 :
-------------------------------------------------------------------
SET AUTOCOMMIT = 0
SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED
INSERT INTO test.t1 VALUES (8,4)
-------------------------------------------------------------------
Session 2 :
-------------------------------------------------------------------
SET AUTOCOMMIT = 0
SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED
SELECT COUNT(*) FROM test.t1
COUNT(*)
7
-------------------------------------------------------------------
Session 1 :
-------------------------------------------------------------------
COMMIT
SET AUTOCOMMIT = 1
-------------------------------------------------------------------
Session 2 :
-------------------------------------------------------------------
SELECT COUNT(*) FROM test.t1
COUNT(*)
8
COMMIT
SET AUTOCOMMIT = 1
SELECT COUNT(*) FROM test.t1
COUNT(*)
8
===================================================================
Isolation Level : READ UNCOMMITTED
===================================================================
-------------------------------------------------------------------
Session 1 :
-------------------------------------------------------------------
SET AUTOCOMMIT = 0
SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED
INSERT INTO test.t1 VALUES (9,5)
-------------------------------------------------------------------
Session 2 :
-------------------------------------------------------------------
SET AUTOCOMMIT = 0
SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED
SELECT COUNT(*) FROM test.t1
COUNT(*)
9
-------------------------------------------------------------------
Session 1 :
-------------------------------------------------------------------
COMMIT
SET AUTOCOMMIT = 1
-------------------------------------------------------------------
Session 2 :
-------------------------------------------------------------------
SELECT COUNT(*) FROM test.t1
COUNT(*)
9
COMMIT
SET AUTOCOMMIT = 1
SELECT COUNT(*) FROM test.t1
COUNT(*)
9
===================================================================
Isolation Level : REPEATABLE READ
===================================================================
-------------------------------------------------------------------
Session 1 :
-------------------------------------------------------------------
SET AUTOCOMMIT = 0
SET SESSION TRANSACTION ISOLATION LEVEL REPEATABLE READ
SELECT COUNT(*) FROM test.t1
COUNT(*)
9
-------------------------------------------------------------------
Session 2 :
-------------------------------------------------------------------
SET AUTOCOMMIT = 0
SET SESSION TRANSACTION ISOLATION LEVEL REPEATABLE READ
INSERT INTO test.t1 VALUES (10,6)
COMMIT
SET AUTOCOMMIT = 1
-------------------------------------------------------------------
Session 1 :
-------------------------------------------------------------------
SELECT COUNT(*) FROM test.t1
COUNT(*)
9
COMMIT
SELECT COUNT(*) FROM test.t1
COUNT(*)
10
SET AUTOCOMMIT = 1
===================================================================
Isolation Level : SERIALIZABLE
===================================================================
-------------------------------------------------------------------
Session 1 :
-------------------------------------------------------------------
SET AUTOCOMMIT = 0
SET SESSION TRANSACTION ISOLATION LEVEL SERIALIZABLE
INSERT INTO test.t1 VALUES (11,7)
-------------------------------------------------------------------
Session 2 :
-------------------------------------------------------------------
SET AUTOCOMMIT = 0
SELECT COUNT(*) FROM test.t1
COUNT(*)
10
-------------------------------------------------------------------
Session 1 :
-------------------------------------------------------------------
COMMIT
SET AUTOCOMMIT = 1
-------------------------------------------------------------------
Session 2 :
-------------------------------------------------------------------
SELECT COUNT(*) FROM test.t1
COUNT(*)
10
COMMIT
SELECT COUNT(*) FROM test.t1
COUNT(*)
11
SET AUTOCOMMIT = 1
===================================================================
Locking done by a SQL transaction
===================================================================
-------------------------------------------------------------------
Session 1 :
-------------------------------------------------------------------
BEGIN
DELETE FROM test.t1 WHERE c1 = 11
SELECT COUNT(*) FROM test.t1
COUNT(*)
10
-------------------------------------------------------------------
Session 2 :
-------------------------------------------------------------------
SELECT COUNT(*) FROM test.t1
COUNT(*)
11
-------------------------------------------------------------------
Session 1 :
-------------------------------------------------------------------
COMMIT
-------------------------------------------------------------------
Session 2 :
-------------------------------------------------------------------
SELECT COUNT(*) FROM test.t1
COUNT(*)
10
Closing Session 1
Closing Session 2
Opening Session 1
Opening Session 2
Opening Session 3
===================================================================
Locking using LOCK TABLE
===================================================================
-------------------------------------------------------------------
Session 1 :
-------------------------------------------------------------------
LOCK TABLE test.t1 READ
/*statement should return an error because table t1 is locked with a READ lock*/
INSERT INTO test.t1 VALUES (11,7)
error: 1099
error msg: Table 't1' was locked with a READ lock and can't be updated
SHOW OPEN TABLES FROM test LIKE 't1'
Database Table In_use Name_locked
test t1 1 0
-------------------------------------------------------------------
Session 2 :
-------------------------------------------------------------------
LOCK TABLE test.t2 WRITE
SHOW OPEN TABLES FROM test LIKE 't1'
Database Table In_use Name_locked
test t1 1 0
SHOW OPEN TABLES FROM test LIKE 't2'
Database Table In_use Name_locked
test t2 1 0
-------------------------------------------------------------------
Session 1 :
-------------------------------------------------------------------
SHOW OPEN TABLES FROM test LIKE 't2'
Database Table In_use Name_locked
test t2 1 0
Closing Session 1
===================================================================
Check session 1's lock after its close
===================================================================
-------------------------------------------------------------------
Session 2 :
-------------------------------------------------------------------
SHOW OPEN TABLES FROM test LIKE 't1'
Database Table In_use Name_locked
test t1 0 0
SHOW OPEN TABLES FROM test LIKE 't2'
Database Table In_use Name_locked
test t2 1 0
Closing Session 2
===================================================================
Check session 2's lock after its close
===================================================================
-------------------------------------------------------------------
Session 3 :
-------------------------------------------------------------------
SHOW OPEN TABLES FROM test LIKE 't1'
Database Table In_use Name_locked
test t1 0 0
SHOW OPEN TABLES FROM test LIKE 't2'
Database Table In_use Name_locked
test t2 0 0
Closing Session 3
Follows threaded run
========================================================================
init thread
Opening Session 1
Opening Session 2
===================================================================
Isolation Level : READ COMMITTED
===================================================================
-------------------------------------------------------------------
Session 1 :
-------------------------------------------------------------------
SET AUTOCOMMIT = 0
SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED
INSERT INTO test.t1 VALUES (8,4)
-------------------------------------------------------------------
Session 2 :
-------------------------------------------------------------------
SET AUTOCOMMIT = 0
SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED
SELECT COUNT(*) FROM test.t1
COUNT(*)
10
-------------------------------------------------------------------
Session 1 :
-------------------------------------------------------------------
COMMIT
SET AUTOCOMMIT = 1
-------------------------------------------------------------------
Session 2 :
-------------------------------------------------------------------
SELECT COUNT(*) FROM test.t1
COUNT(*)
11
COMMIT
SET AUTOCOMMIT = 1
SELECT COUNT(*) FROM test.t1
COUNT(*)
11
===================================================================
Isolation Level : READ UNCOMMITTED
===================================================================
-------------------------------------------------------------------
Session 1 :
-------------------------------------------------------------------
SET AUTOCOMMIT = 0
SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED
INSERT INTO test.t1 VALUES (9,5)
-------------------------------------------------------------------
Session 2 :
-------------------------------------------------------------------
SET AUTOCOMMIT = 0
SET SESSION TRANSACTION ISOLATION LEVEL READ UNCOMMITTED
SELECT COUNT(*) FROM test.t1
COUNT(*)
12
-------------------------------------------------------------------
Session 1 :
-------------------------------------------------------------------
COMMIT
SET AUTOCOMMIT = 1
-------------------------------------------------------------------
Session 2 :
-------------------------------------------------------------------
SELECT COUNT(*) FROM test.t1
COUNT(*)
12
COMMIT
SET AUTOCOMMIT = 1
SELECT COUNT(*) FROM test.t1
COUNT(*)
12
===================================================================
Isolation Level : REPEATABLE READ
===================================================================
-------------------------------------------------------------------
Session 1 :
-------------------------------------------------------------------
SET AUTOCOMMIT = 0
SET SESSION TRANSACTION ISOLATION LEVEL REPEATABLE READ
SELECT COUNT(*) FROM test.t1
COUNT(*)
12
-------------------------------------------------------------------
Session 2 :
-------------------------------------------------------------------
SET AUTOCOMMIT = 0
SET SESSION TRANSACTION ISOLATION LEVEL REPEATABLE READ
INSERT INTO test.t1 VALUES (10,6)
COMMIT
SET AUTOCOMMIT = 1
-------------------------------------------------------------------
Session 1 :
-------------------------------------------------------------------
SELECT COUNT(*) FROM test.t1
COUNT(*)
12
COMMIT
SELECT COUNT(*) FROM test.t1
COUNT(*)
13
SET AUTOCOMMIT = 1
===================================================================
Isolation Level : SERIALIZABLE
===================================================================
-------------------------------------------------------------------
Session 1 :
-------------------------------------------------------------------
SET AUTOCOMMIT = 0
SET SESSION TRANSACTION ISOLATION LEVEL SERIALIZABLE
INSERT INTO test.t1 VALUES (11,7)
-------------------------------------------------------------------
Session 2 :
-------------------------------------------------------------------
SET AUTOCOMMIT = 0
SELECT COUNT(*) FROM test.t1
COUNT(*)
13
-------------------------------------------------------------------
Session 1 :
-------------------------------------------------------------------
COMMIT
SET AUTOCOMMIT = 1
-------------------------------------------------------------------
Session 2 :
-------------------------------------------------------------------
SELECT COUNT(*) FROM test.t1
COUNT(*)
13
COMMIT
SELECT COUNT(*) FROM test.t1
COUNT(*)
14
SET AUTOCOMMIT = 1
===================================================================
Locking done by a SQL transaction
===================================================================
-------------------------------------------------------------------
Session 1 :
-------------------------------------------------------------------
BEGIN
DELETE FROM test.t1 WHERE c1 = 11
SELECT COUNT(*) FROM test.t1
COUNT(*)
13
-------------------------------------------------------------------
Session 2 :
-------------------------------------------------------------------
SELECT COUNT(*) FROM test.t1
COUNT(*)
14
-------------------------------------------------------------------
Session 1 :
-------------------------------------------------------------------
COMMIT
-------------------------------------------------------------------
Session 2 :
-------------------------------------------------------------------
SELECT COUNT(*) FROM test.t1
COUNT(*)
13
Closing Session 1
Closing Session 2
Opening Session 1
Opening Session 2
Opening Session 3
===================================================================
Locking using LOCK TABLE
===================================================================
-------------------------------------------------------------------
Session 1 :
-------------------------------------------------------------------
LOCK TABLE test.t1 READ
/*statement should return an error because table t1 is locked with a READ lock*/
INSERT INTO test.t1 VALUES (11,7)
error: 1099
error msg: Table 't1' was locked with a READ lock and can't be updated
SHOW OPEN TABLES FROM test LIKE 't1'
Database Table In_use Name_locked
test t1 1 0
-------------------------------------------------------------------
Session 2 :
-------------------------------------------------------------------
LOCK TABLE test.t2 WRITE
SHOW OPEN TABLES FROM test LIKE 't1'
Database Table In_use Name_locked
test t1 1 0
SHOW OPEN TABLES FROM test LIKE 't2'
Database Table In_use Name_locked
test t2 1 0
-------------------------------------------------------------------
Session 1 :
-------------------------------------------------------------------
SHOW OPEN TABLES FROM test LIKE 't2'
Database Table In_use Name_locked
test t2 1 0
Closing Session 1
===================================================================
Check session 1's lock after its close
===================================================================
-------------------------------------------------------------------
Session 2 :
-------------------------------------------------------------------
SHOW OPEN TABLES FROM test LIKE 't1'
Database Table In_use Name_locked
test t1 0 0
SHOW OPEN TABLES FROM test LIKE 't2'
Database Table In_use Name_locked
test t2 1 0
Closing Session 2
===================================================================
Check session 2's lock after its close
===================================================================
-------------------------------------------------------------------
Session 3 :
-------------------------------------------------------------------
SHOW OPEN TABLES FROM test LIKE 't1'
Database Table In_use Name_locked
test t1 0 0
SHOW OPEN TABLES FROM test LIKE 't2'
Database Table In_use Name_locked
test t2 0 0
Closing Session 3
deinit thread
SHOW OPEN TABLES FROM test LIKE 't1';
Database Table In_use Name_locked
test t1 0 0
SHOW OPEN TABLES FROM test LIKE 't2';
Database Table In_use Name_locked
test t2 0 0
# Dropping the created tables
DROP TABLE t1;
DROP TABLE t2;