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Parsed test spec with 2 sessions
starting permutation: s1f1 s1sleep s1f2 s2u
step s1f1: SELECT c FROM sto1 ORDER BY c LIMIT 1;
c
-
1
(1 row)
step s1sleep: SELECT setting, pg_sleep(6) FROM pg_settings WHERE name = 'old_snapshot_threshold';
setting|pg_sleep
-------+--------
0|
(1 row)
step s1f2: SELECT c FROM sto1 ORDER BY c LIMIT 1;
c
-
1
(1 row)
step s2u: UPDATE sto1 SET c = 1001 WHERE c = 1;
starting permutation: s1f1 s1sleep s2u s1f2
step s1f1: SELECT c FROM sto1 ORDER BY c LIMIT 1;
c
-
1
(1 row)
step s1sleep: SELECT setting, pg_sleep(6) FROM pg_settings WHERE name = 'old_snapshot_threshold';
setting|pg_sleep
-------+--------
0|
(1 row)
step s2u: UPDATE sto1 SET c = 1001 WHERE c = 1;
step s1f2: SELECT c FROM sto1 ORDER BY c LIMIT 1;
ERROR: snapshot too old
starting permutation: s1f1 s2u s1sleep s1f2
step s1f1: SELECT c FROM sto1 ORDER BY c LIMIT 1;
c
-
1
(1 row)
step s2u: UPDATE sto1 SET c = 1001 WHERE c = 1;
step s1sleep: SELECT setting, pg_sleep(6) FROM pg_settings WHERE name = 'old_snapshot_threshold';
setting|pg_sleep
-------+--------
0|
(1 row)
step s1f2: SELECT c FROM sto1 ORDER BY c LIMIT 1;
ERROR: snapshot too old
starting permutation: s2u s1f1 s1sleep s1f2
step s2u: UPDATE sto1 SET c = 1001 WHERE c = 1;
step s1f1: SELECT c FROM sto1 ORDER BY c LIMIT 1;
c
-
2
(1 row)
step s1sleep: SELECT setting, pg_sleep(6) FROM pg_settings WHERE name = 'old_snapshot_threshold';
setting|pg_sleep
-------+--------
0|
(1 row)
step s1f2: SELECT c FROM sto1 ORDER BY c LIMIT 1;
ERROR: snapshot too old
|
