Ankur Mhatre
eaa8171966
Three replicas of one application against one PostgreSQL database, proving duplicate @Scheduled execution and then removing it with ShedLock: 24 executions where 8 were due, then 7 for 7 ticks. Also measured: @SchedulerLock without @EnableSchedulerLock does nothing and warns about nothing; spring.task.scheduling.pool.size=1 does not starve a fixedRate job but delays it and fires 35 of 40 executions in a burst; and a node whose clock is 40 seconds fast takes a live lock unless the provider uses usingDbTime().
38 lines
983 B
Plaintext
38 lines
983 B
Plaintext
profile=locked replicas=3 run-for=30s job rate=3s job duration=PT0.2S replica-3 clock skew=0s
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-- every execution, in order --
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instance_id | started_at
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-------------+--------------
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replica-2 | 22:49:29.233
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replica-3 | 22:49:31.931
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replica-3 | 22:49:34.925
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replica-3 | 22:49:37.934
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replica-3 | 22:49:40.934
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replica-3 | 22:49:43.925
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replica-3 | 22:49:46.934
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(7 rows)
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-- executions per replica --
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instance_id | count
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-------------+-------
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replica-2 | 1
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replica-3 | 6
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(2 rows)
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-- pairs of executions that overlapped (a second replica started while the first was still working) --
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overlapping_pairs
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-------------------
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0
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(1 row)
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first | first_at | second | second_at
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-------+----------+--------+-----------
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(0 rows)
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-- the lock row --
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name | locked_by | locked_at | lock_until
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---------------+-----------+--------------+--------------
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nightlyReport | unknown | 17:19:46.921 | 17:19:47.921
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(1 row)
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