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
|
Parsed test spec with 3 sessions
starting permutation: controller_locks controller_show s1_upsert s2_upsert controller_show controller_unlock_1_1 controller_unlock_2_1 controller_unlock_1_3 controller_unlock_2_3 controller_show controller_unlock_2_2 controller_show controller_unlock_1_2 controller_show
step controller_locks: SELECT pg_advisory_lock(sess, lock), sess, lock FROM generate_series(1, 2) a(sess), generate_series(1,3) b(lock);
pg_advisory_lock|sess|lock
----------------+----+----
| 1| 1
| 1| 2
| 1| 3
| 2| 1
| 2| 2
| 2| 3
(6 rows)
step controller_show: SELECT * FROM upserttest;
key|data
---+----
(0 rows)
s1: NOTICE: blurt_and_lock_123() called for k1 in session 1
s1: NOTICE: acquiring advisory lock on 3
step s1_upsert: INSERT INTO upserttest(key, data) VALUES('k1', 'inserted s1') ON CONFLICT (blurt_and_lock_123(key)) DO UPDATE SET data = upserttest.data || ' with conflict update s1'; <waiting ...>
s2: NOTICE: blurt_and_lock_123() called for k1 in session 2
s2: NOTICE: acquiring advisory lock on 3
step s2_upsert: INSERT INTO upserttest(key, data) VALUES('k1', 'inserted s2') ON CONFLICT (blurt_and_lock_123(key)) DO UPDATE SET data = upserttest.data || ' with conflict update s2'; <waiting ...>
step controller_show: SELECT * FROM upserttest;
key|data
---+----
(0 rows)
step controller_unlock_1_1: SELECT pg_advisory_unlock(1, 1);
pg_advisory_unlock
------------------
t
(1 row)
step controller_unlock_2_1: SELECT pg_advisory_unlock(2, 1);
pg_advisory_unlock
------------------
t
(1 row)
step controller_unlock_1_3: SELECT pg_advisory_unlock(1, 3);
pg_advisory_unlock
------------------
t
(1 row)
s1: NOTICE: blurt_and_lock_123() called for k1 in session 1
s1: NOTICE: acquiring advisory lock on 2
step controller_unlock_2_3: SELECT pg_advisory_unlock(2, 3);
pg_advisory_unlock
------------------
t
(1 row)
s2: NOTICE: blurt_and_lock_123() called for k1 in session 2
s2: NOTICE: acquiring advisory lock on 2
step controller_show: SELECT * FROM upserttest;
key|data
---+----
(0 rows)
step controller_unlock_2_2: SELECT pg_advisory_unlock(2, 2);
pg_advisory_unlock
------------------
t
(1 row)
step s2_upsert: <... completed>
step controller_show: SELECT * FROM upserttest;
key|data
---+-----------
k1 |inserted s2
(1 row)
step controller_unlock_1_2: SELECT pg_advisory_unlock(1, 2);
pg_advisory_unlock
------------------
t
(1 row)
s1: NOTICE: blurt_and_lock_123() called for k1 in session 1
s1: NOTICE: acquiring advisory lock on 2
s1: NOTICE: blurt_and_lock_123() called for k1 in session 1
s1: NOTICE: acquiring advisory lock on 2
step s1_upsert: <... completed>
step controller_show: SELECT * FROM upserttest;
key|data
---+-----------------------------------
k1 |inserted s2 with conflict update s1
(1 row)
starting permutation: controller_locks controller_show s1_upsert s2_upsert controller_show controller_unlock_1_1 controller_unlock_2_1 controller_unlock_1_3 controller_unlock_2_3 controller_show controller_unlock_1_2 controller_show controller_unlock_2_2 controller_show
step controller_locks: SELECT pg_advisory_lock(sess, lock), sess, lock FROM generate_series(1, 2) a(sess), generate_series(1,3) b(lock);
pg_advisory_lock|sess|lock
----------------+----+----
| 1| 1
| 1| 2
| 1| 3
| 2| 1
| 2| 2
| 2| 3
(6 rows)
step controller_show: SELECT * FROM upserttest;
key|data
---+----
(0 rows)
s1: NOTICE: blurt_and_lock_123() called for k1 in session 1
s1: NOTICE: acquiring advisory lock on 3
step s1_upsert: INSERT INTO upserttest(key, data) VALUES('k1', 'inserted s1') ON CONFLICT (blurt_and_lock_123(key)) DO UPDATE SET data = upserttest.data || ' with conflict update s1'; <waiting ...>
s2: NOTICE: blurt_and_lock_123() called for k1 in session 2
s2: NOTICE: acquiring advisory lock on 3
step s2_upsert: INSERT INTO upserttest(key, data) VALUES('k1', 'inserted s2') ON CONFLICT (blurt_and_lock_123(key)) DO UPDATE SET data = upserttest.data || ' with conflict update s2'; <waiting ...>
step controller_show: SELECT * FROM upserttest;
key|data
---+----
(0 rows)
step controller_unlock_1_1: SELECT pg_advisory_unlock(1, 1);
pg_advisory_unlock
------------------
t
(1 row)
step controller_unlock_2_1: SELECT pg_advisory_unlock(2, 1);
pg_advisory_unlock
------------------
t
(1 row)
step controller_unlock_1_3: SELECT pg_advisory_unlock(1, 3);
pg_advisory_unlock
------------------
t
(1 row)
s1: NOTICE: blurt_and_lock_123() called for k1 in session 1
s1: NOTICE: acquiring advisory lock on 2
step controller_unlock_2_3: SELECT pg_advisory_unlock(2, 3);
pg_advisory_unlock
------------------
t
(1 row)
s2: NOTICE: blurt_and_lock_123() called for k1 in session 2
s2: NOTICE: acquiring advisory lock on 2
step controller_show: SELECT * FROM upserttest;
key|data
---+----
(0 rows)
step controller_unlock_1_2: SELECT pg_advisory_unlock(1, 2);
pg_advisory_unlock
------------------
t
(1 row)
step s1_upsert: <... completed>
step controller_show: SELECT * FROM upserttest;
key|data
---+-----------
k1 |inserted s1
(1 row)
step controller_unlock_2_2: SELECT pg_advisory_unlock(2, 2);
pg_advisory_unlock
------------------
t
(1 row)
s2: NOTICE: blurt_and_lock_123() called for k1 in session 2
s2: NOTICE: acquiring advisory lock on 2
s2: NOTICE: blurt_and_lock_123() called for k1 in session 2
s2: NOTICE: acquiring advisory lock on 2
step s2_upsert: <... completed>
step controller_show: SELECT * FROM upserttest;
key|data
---+-----------------------------------
k1 |inserted s1 with conflict update s2
(1 row)
starting permutation: controller_locks controller_show s1_insert_toast s2_insert_toast controller_show controller_unlock_1_1 controller_unlock_2_1 controller_unlock_1_3 controller_unlock_2_3 controller_show controller_unlock_1_2 controller_show_count controller_unlock_2_2 controller_show_count
step controller_locks: SELECT pg_advisory_lock(sess, lock), sess, lock FROM generate_series(1, 2) a(sess), generate_series(1,3) b(lock);
pg_advisory_lock|sess|lock
----------------+----+----
| 1| 1
| 1| 2
| 1| 3
| 2| 1
| 2| 2
| 2| 3
(6 rows)
step controller_show: SELECT * FROM upserttest;
key|data
---+----
(0 rows)
s1: NOTICE: blurt_and_lock_123() called for k2 in session 1
s1: NOTICE: acquiring advisory lock on 3
step s1_insert_toast: INSERT INTO upserttest VALUES('k2', ctoast_large_val()) ON CONFLICT DO NOTHING; <waiting ...>
s2: NOTICE: blurt_and_lock_123() called for k2 in session 2
s2: NOTICE: acquiring advisory lock on 3
step s2_insert_toast: INSERT INTO upserttest VALUES('k2', ctoast_large_val()) ON CONFLICT DO NOTHING; <waiting ...>
step controller_show: SELECT * FROM upserttest;
key|data
---+----
(0 rows)
step controller_unlock_1_1: SELECT pg_advisory_unlock(1, 1);
pg_advisory_unlock
------------------
t
(1 row)
step controller_unlock_2_1: SELECT pg_advisory_unlock(2, 1);
pg_advisory_unlock
------------------
t
(1 row)
step controller_unlock_1_3: SELECT pg_advisory_unlock(1, 3);
pg_advisory_unlock
------------------
t
(1 row)
s1: NOTICE: blurt_and_lock_123() called for k2 in session 1
s1: NOTICE: acquiring advisory lock on 2
step controller_unlock_2_3: SELECT pg_advisory_unlock(2, 3);
pg_advisory_unlock
------------------
t
(1 row)
s2: NOTICE: blurt_and_lock_123() called for k2 in session 2
s2: NOTICE: acquiring advisory lock on 2
step controller_show: SELECT * FROM upserttest;
key|data
---+----
(0 rows)
step controller_unlock_1_2: SELECT pg_advisory_unlock(1, 2);
pg_advisory_unlock
------------------
t
(1 row)
step s1_insert_toast: <... completed>
step controller_show_count: SELECT COUNT(*) FROM upserttest;
count
-----
1
(1 row)
step controller_unlock_2_2: SELECT pg_advisory_unlock(2, 2);
pg_advisory_unlock
------------------
t
(1 row)
s2: NOTICE: blurt_and_lock_123() called for k2 in session 2
s2: NOTICE: acquiring advisory lock on 2
s2: NOTICE: blurt_and_lock_123() called for k2 in session 2
s2: NOTICE: acquiring advisory lock on 2
step s2_insert_toast: <... completed>
step controller_show_count: SELECT COUNT(*) FROM upserttest;
count
-----
1
(1 row)
starting permutation: controller_locks controller_show s1_begin s2_begin s1_upsert s2_upsert controller_show controller_unlock_1_1 controller_unlock_2_1 controller_unlock_1_3 controller_unlock_2_3 controller_show controller_unlock_1_2 controller_show controller_unlock_2_2 controller_show s1_commit controller_show s2_commit controller_show
step controller_locks: SELECT pg_advisory_lock(sess, lock), sess, lock FROM generate_series(1, 2) a(sess), generate_series(1,3) b(lock);
pg_advisory_lock|sess|lock
----------------+----+----
| 1| 1
| 1| 2
| 1| 3
| 2| 1
| 2| 2
| 2| 3
(6 rows)
step controller_show: SELECT * FROM upserttest;
key|data
---+----
(0 rows)
step s1_begin: BEGIN;
step s2_begin: BEGIN;
s1: NOTICE: blurt_and_lock_123() called for k1 in session 1
s1: NOTICE: acquiring advisory lock on 3
step s1_upsert: INSERT INTO upserttest(key, data) VALUES('k1', 'inserted s1') ON CONFLICT (blurt_and_lock_123(key)) DO UPDATE SET data = upserttest.data || ' with conflict update s1'; <waiting ...>
s2: NOTICE: blurt_and_lock_123() called for k1 in session 2
s2: NOTICE: acquiring advisory lock on 3
step s2_upsert: INSERT INTO upserttest(key, data) VALUES('k1', 'inserted s2') ON CONFLICT (blurt_and_lock_123(key)) DO UPDATE SET data = upserttest.data || ' with conflict update s2'; <waiting ...>
step controller_show: SELECT * FROM upserttest;
key|data
---+----
(0 rows)
step controller_unlock_1_1: SELECT pg_advisory_unlock(1, 1);
pg_advisory_unlock
------------------
t
(1 row)
step controller_unlock_2_1: SELECT pg_advisory_unlock(2, 1);
pg_advisory_unlock
------------------
t
(1 row)
step controller_unlock_1_3: SELECT pg_advisory_unlock(1, 3);
pg_advisory_unlock
------------------
t
(1 row)
s1: NOTICE: blurt_and_lock_123() called for k1 in session 1
s1: NOTICE: acquiring advisory lock on 2
step controller_unlock_2_3: SELECT pg_advisory_unlock(2, 3);
pg_advisory_unlock
------------------
t
(1 row)
s2: NOTICE: blurt_and_lock_123() called for k1 in session 2
s2: NOTICE: acquiring advisory lock on 2
step controller_show: SELECT * FROM upserttest;
key|data
---+----
(0 rows)
step controller_unlock_1_2: SELECT pg_advisory_unlock(1, 2);
pg_advisory_unlock
------------------
t
(1 row)
step s1_upsert: <... completed>
step controller_show: SELECT * FROM upserttest;
key|data
---+----
(0 rows)
step controller_unlock_2_2: SELECT pg_advisory_unlock(2, 2);
pg_advisory_unlock
------------------
t
(1 row)
s2: NOTICE: blurt_and_lock_123() called for k1 in session 2
s2: NOTICE: acquiring advisory lock on 2
s2: NOTICE: blurt_and_lock_123() called for k1 in session 2
s2: NOTICE: acquiring advisory lock on 2
step controller_show: SELECT * FROM upserttest;
key|data
---+----
(0 rows)
step s1_commit: COMMIT;
s2: NOTICE: blurt_and_lock_123() called for k1 in session 2
s2: NOTICE: acquiring advisory lock on 2
step s2_upsert: <... completed>
step controller_show: SELECT * FROM upserttest;
key|data
---+-----------
k1 |inserted s1
(1 row)
step s2_commit: COMMIT;
step controller_show: SELECT * FROM upserttest;
key|data
---+-----------------------------------
k1 |inserted s1 with conflict update s2
(1 row)
starting permutation: s1_create_non_unique_index s1_confirm_index_order controller_locks controller_show s2_begin s1_upsert s2_upsert controller_show controller_unlock_1_1 controller_unlock_2_1 controller_unlock_1_3 controller_unlock_2_3 controller_show controller_lock_2_4 controller_unlock_2_2 controller_show controller_unlock_1_2 controller_print_speculative_locks controller_unlock_2_4 s2_noop controller_print_speculative_locks s2_commit s1_noop controller_show controller_print_speculative_locks
step s1_create_non_unique_index: CREATE INDEX upserttest_key_idx ON upserttest((blurt_and_lock_4(key)));
step s1_confirm_index_order: SELECT 'upserttest_key_uniq_idx'::regclass::int8 < 'upserttest_key_idx'::regclass::int8;
?column?
--------
t
(1 row)
step controller_locks: SELECT pg_advisory_lock(sess, lock), sess, lock FROM generate_series(1, 2) a(sess), generate_series(1,3) b(lock);
pg_advisory_lock|sess|lock
----------------+----+----
| 1| 1
| 1| 2
| 1| 3
| 2| 1
| 2| 2
| 2| 3
(6 rows)
step controller_show: SELECT * FROM upserttest;
key|data
---+----
(0 rows)
step s2_begin: BEGIN;
s1: NOTICE: blurt_and_lock_123() called for k1 in session 1
s1: NOTICE: acquiring advisory lock on 3
step s1_upsert: INSERT INTO upserttest(key, data) VALUES('k1', 'inserted s1') ON CONFLICT (blurt_and_lock_123(key)) DO UPDATE SET data = upserttest.data || ' with conflict update s1'; <waiting ...>
s2: NOTICE: blurt_and_lock_123() called for k1 in session 2
s2: NOTICE: acquiring advisory lock on 3
step s2_upsert: INSERT INTO upserttest(key, data) VALUES('k1', 'inserted s2') ON CONFLICT (blurt_and_lock_123(key)) DO UPDATE SET data = upserttest.data || ' with conflict update s2'; <waiting ...>
step controller_show: SELECT * FROM upserttest;
key|data
---+----
(0 rows)
step controller_unlock_1_1: SELECT pg_advisory_unlock(1, 1);
pg_advisory_unlock
------------------
t
(1 row)
step controller_unlock_2_1: SELECT pg_advisory_unlock(2, 1);
pg_advisory_unlock
------------------
t
(1 row)
step controller_unlock_1_3: SELECT pg_advisory_unlock(1, 3);
pg_advisory_unlock
------------------
t
(1 row)
s1: NOTICE: blurt_and_lock_123() called for k1 in session 1
s1: NOTICE: acquiring advisory lock on 2
step controller_unlock_2_3: SELECT pg_advisory_unlock(2, 3);
pg_advisory_unlock
------------------
t
(1 row)
s2: NOTICE: blurt_and_lock_123() called for k1 in session 2
s2: NOTICE: acquiring advisory lock on 2
step controller_show: SELECT * FROM upserttest;
key|data
---+----
(0 rows)
step controller_lock_2_4: SELECT pg_advisory_lock(2, 4);
pg_advisory_lock
----------------
(1 row)
step controller_unlock_2_2: SELECT pg_advisory_unlock(2, 2);
pg_advisory_unlock
------------------
t
(1 row)
s2: NOTICE: blurt_and_lock_4() called for k1 in session 2
s2: NOTICE: acquiring advisory lock on 4
step controller_show: SELECT * FROM upserttest;
key|data
---+----
(0 rows)
step controller_unlock_1_2: SELECT pg_advisory_unlock(1, 2);
pg_advisory_unlock
------------------
t
(1 row)
s1: NOTICE: blurt_and_lock_4() called for k1 in session 1
s1: NOTICE: acquiring advisory lock on 4
s1: NOTICE: blurt_and_lock_123() called for k1 in session 1
s1: NOTICE: acquiring advisory lock on 2
s1: NOTICE: blurt_and_lock_123() called for k1 in session 1
s1: NOTICE: acquiring advisory lock on 2
step controller_print_speculative_locks:
SELECT pa.application_name, locktype, mode, granted
FROM pg_locks pl JOIN pg_stat_activity pa USING (pid)
WHERE
locktype IN ('spectoken', 'transactionid')
AND pa.datname = current_database()
AND pa.application_name LIKE 'isolation/insert-conflict-specconflict/s%'
ORDER BY 1, 2, 3, 4;
application_name |locktype |mode |granted
-----------------------------------------+-------------+-------------+-------
isolation/insert-conflict-specconflict/s1|spectoken |ShareLock |f
isolation/insert-conflict-specconflict/s1|transactionid|ExclusiveLock|t
isolation/insert-conflict-specconflict/s2|spectoken |ExclusiveLock|t
isolation/insert-conflict-specconflict/s2|transactionid|ExclusiveLock|t
(4 rows)
step controller_unlock_2_4: SELECT pg_advisory_unlock(2, 4);
pg_advisory_unlock
------------------
t
(1 row)
s1: NOTICE: blurt_and_lock_123() called for k1 in session 1
s1: NOTICE: acquiring advisory lock on 2
step s2_upsert: <... completed>
step s2_noop:
step controller_print_speculative_locks:
SELECT pa.application_name, locktype, mode, granted
FROM pg_locks pl JOIN pg_stat_activity pa USING (pid)
WHERE
locktype IN ('spectoken', 'transactionid')
AND pa.datname = current_database()
AND pa.application_name LIKE 'isolation/insert-conflict-specconflict/s%'
ORDER BY 1, 2, 3, 4;
application_name |locktype |mode |granted
-----------------------------------------+-------------+-------------+-------
isolation/insert-conflict-specconflict/s1|transactionid|ExclusiveLock|t
isolation/insert-conflict-specconflict/s1|transactionid|ShareLock |f
isolation/insert-conflict-specconflict/s2|transactionid|ExclusiveLock|t
(3 rows)
step s2_commit: COMMIT;
s1: NOTICE: blurt_and_lock_123() called for k1 in session 1
s1: NOTICE: acquiring advisory lock on 2
step s1_upsert: <... completed>
step s1_noop:
step controller_show: SELECT * FROM upserttest;
key|data
---+-----------------------------------
k1 |inserted s2 with conflict update s1
(1 row)
step controller_print_speculative_locks:
SELECT pa.application_name, locktype, mode, granted
FROM pg_locks pl JOIN pg_stat_activity pa USING (pid)
WHERE
locktype IN ('spectoken', 'transactionid')
AND pa.datname = current_database()
AND pa.application_name LIKE 'isolation/insert-conflict-specconflict/s%'
ORDER BY 1, 2, 3, 4;
application_name|locktype|mode|granted
----------------+--------+----+-------
(0 rows)
|