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[Question] Is it possible that sometimes the same delayed_work record is processed more than once? #12

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[Question] Is it possible that sometimes the same delayed_work record is processed more than once?#12
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questionFurther information is requested
@RMISCG

Description

@RMISCG
RMISCG
opened on Mar 3, 2020

Description

Is it possible that sometimes the same delayed_work record is processed more than once?

From the testing we've been able to do so far, it seems like this is an intermittent issue.
Also, I haven't encountered a scenario where the same record was processed more than twice.
I have created a sample Spring Boot project here https://github.com/RMISCG/queue which you can use for testing purposes.
The project has a README.md file in the parent directory for more details.

Additional Information

  • Framework Version:
    Java: 11.0.4
    Spring Boot: 2.2.5.RELEASE
    Gradle: 5.6

  • Platform:
    macOS Mojave Version 10.14.6

  • Command/Work You Tried to Run:

  1. cd into the parent directory.
  2. ./gradlew clean
  3. ./gradlew build
  4. ./gradlew bootRun
  • Any Output you Recieved (record with state 09 processed twice):
2020-03-03 12:58:35.846  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Starting QueueApplication on ml0179620 with PID 34280 (/Users/rmis/dev/apps-external/queue/build/classes/java/main started by rmis in /Users/rmis/dev/apps-external/queue)
2020-03-03 12:58:35.849  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : No active profile set, falling back to default profiles: default
2020-03-03 12:58:36.413  INFO 34280 --- [           main] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Starting...
2020-03-03 12:58:36.993  INFO 34280 --- [           main] com.zaxxer.hikari.HikariDataSource       : HikariPool-1 - Start completed.
2020-03-03 12:58:37.499  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 01 and result 01
2020-03-03 12:58:37.610  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 02 and result 02
2020-03-03 12:58:37.722  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 03 and result 03
2020-03-03 12:58:37.834  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 04 and result 04
2020-03-03 12:58:37.949  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 05 and result 05
2020-03-03 12:58:38.060  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 06 and result 06
2020-03-03 12:58:38.172  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 07 and result 07
2020-03-03 12:58:38.282  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 08 and result 08
2020-03-03 12:58:38.393  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 09 and result 09
2020-03-03 12:58:38.504  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 10 and result 10
2020-03-03 12:58:38.616  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 11 and result 11
2020-03-03 12:58:38.729  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 12 and result 12
2020-03-03 12:58:38.840  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 13 and result 13
2020-03-03 12:58:38.951  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 14 and result 14
2020-03-03 12:58:39.065  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 15 and result 15
2020-03-03 12:58:39.177  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 16 and result 16
2020-03-03 12:58:39.361  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 17 and result 17
2020-03-03 12:58:39.478  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 18 and result 18
2020-03-03 12:58:39.588  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 19 and result 19
2020-03-03 12:58:39.700  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 20 and result 20
2020-03-03 12:58:39.813  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 21 and result 21
2020-03-03 12:58:39.926  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 22 and result 22
2020-03-03 12:58:40.038  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 23 and result 23
2020-03-03 12:58:40.151  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 24 and result 24
2020-03-03 12:58:40.262  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 25 and result 25
2020-03-03 12:58:40.373  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 26 and result 26
2020-03-03 12:58:40.485  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 27 and result 27
2020-03-03 12:58:40.599  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 28 and result 28
2020-03-03 12:58:40.712  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 29 and result 29
2020-03-03 12:58:40.832  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 30 and result 30
2020-03-03 12:58:40.947  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 31 and result 31
2020-03-03 12:58:41.061  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 32 and result 32
2020-03-03 12:58:41.172  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 33 and result 33
2020-03-03 12:58:41.283  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 34 and result 34
2020-03-03 12:58:41.395  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 35 and result 35
2020-03-03 12:58:41.506  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 36 and result 36
2020-03-03 12:58:41.620  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 37 and result 37
2020-03-03 12:58:41.737  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 38 and result 38
2020-03-03 12:58:41.849  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 39 and result 39
2020-03-03 12:58:41.963  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 40 and result 40
2020-03-03 12:58:42.075  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 41 and result 41
2020-03-03 12:58:42.186  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 42 and result 42
2020-03-03 12:58:42.299  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 43 and result 43
2020-03-03 12:58:42.411  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 44 and result 44
2020-03-03 12:58:42.523  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 45 and result 45
2020-03-03 12:58:42.634  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 46 and result 46
2020-03-03 12:58:42.746  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 47 and result 47
2020-03-03 12:58:42.865  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 48 and result 48
2020-03-03 12:58:42.975  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 49 and result 49
2020-03-03 12:58:43.088  INFO 34280 --- [           main] com.rss.queue.QueueApplication           : Created com.rss.queue.job.EchoJob with state 50 and result 50
2020-03-03 12:58:43.366  INFO 34280 --- [pool-1-thread-1] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 01
2020-03-03 12:58:43.442  INFO 34280 --- [pool-1-thread-2] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 50
2020-03-03 12:58:43.519  INFO 34280 --- [pool-1-thread-3] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 49
2020-03-03 12:58:43.596  INFO 34280 --- [pool-1-thread-4] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 48
2020-03-03 12:58:43.673  INFO 34280 --- [pool-1-thread-5] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 47
2020-03-03 12:58:44.118  INFO 34280 --- [pool-1-thread-1] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 46
2020-03-03 12:58:44.192  INFO 34280 --- [pool-1-thread-2] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 45
2020-03-03 12:58:44.266  INFO 34280 --- [pool-1-thread-3] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 44
2020-03-03 12:58:44.341  INFO 34280 --- [pool-1-thread-4] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 43
2020-03-03 12:58:44.421  INFO 34280 --- [pool-1-thread-5] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 42
2020-03-03 12:58:44.867  INFO 34280 --- [pool-1-thread-1] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 41
2020-03-03 12:58:44.944  INFO 34280 --- [pool-1-thread-2] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 40
2020-03-03 12:58:45.020  INFO 34280 --- [pool-1-thread-3] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 39
2020-03-03 12:58:45.105  INFO 34280 --- [pool-1-thread-4] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 38
2020-03-03 12:58:45.188  INFO 34280 --- [pool-1-thread-5] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 37
2020-03-03 12:58:45.696  INFO 34280 --- [pool-1-thread-1] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 36
2020-03-03 12:58:45.771  INFO 34280 --- [pool-1-thread-2] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 35
2020-03-03 12:58:45.846  INFO 34280 --- [pool-1-thread-3] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 34
2020-03-03 12:58:45.922  INFO 34280 --- [pool-1-thread-4] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 33
2020-03-03 12:58:45.996  INFO 34280 --- [pool-1-thread-5] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 32
2020-03-03 12:58:46.510  INFO 34280 --- [pool-1-thread-1] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 31
2020-03-03 12:58:46.587  INFO 34280 --- [pool-1-thread-2] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 30
2020-03-03 12:58:46.665  INFO 34280 --- [pool-1-thread-3] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 29
2020-03-03 12:58:46.741  INFO 34280 --- [pool-1-thread-4] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 28
2020-03-03 12:58:46.819  INFO 34280 --- [pool-1-thread-5] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 27
2020-03-03 12:58:47.269  INFO 34280 --- [pool-1-thread-1] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 26
2020-03-03 12:58:47.344  INFO 34280 --- [pool-1-thread-2] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 25
2020-03-03 12:58:47.418  INFO 34280 --- [pool-1-thread-3] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 24
2020-03-03 12:58:47.493  INFO 34280 --- [pool-1-thread-4] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 23
2020-03-03 12:58:47.569  INFO 34280 --- [pool-1-thread-5] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 22
2020-03-03 12:58:48.103  INFO 34280 --- [pool-1-thread-1] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 21
2020-03-03 12:58:48.179  INFO 34280 --- [pool-1-thread-2] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 20
2020-03-03 12:58:48.253  INFO 34280 --- [pool-1-thread-3] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 19
2020-03-03 12:58:48.327  INFO 34280 --- [pool-1-thread-4] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 18
2020-03-03 12:58:48.400  INFO 34280 --- [pool-1-thread-5] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 17
2020-03-03 12:58:48.931  INFO 34280 --- [pool-1-thread-1] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 16
2020-03-03 12:58:49.005  INFO 34280 --- [pool-1-thread-2] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 15
2020-03-03 12:58:49.079  INFO 34280 --- [pool-1-thread-3] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 14
2020-03-03 12:58:49.153  INFO 34280 --- [pool-1-thread-4] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 13
2020-03-03 12:58:49.232  INFO 34280 --- [pool-1-thread-5] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 12
2020-03-03 12:58:49.668  INFO 34280 --- [pool-1-thread-1] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 11
2020-03-03 12:58:49.751  INFO 34280 --- [pool-1-thread-2] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 10
2020-03-03 12:58:49.827  INFO 34280 --- [pool-1-thread-3] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 09
2020-03-03 12:58:49.904  INFO 34280 --- [pool-1-thread-4] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 08
2020-03-03 12:58:49.980  INFO 34280 --- [pool-1-thread-5] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 07
2020-03-03 12:58:50.495  INFO 34280 --- [pool-1-thread-1] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 06
2020-03-03 12:58:50.570  INFO 34280 --- [pool-1-thread-2] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 05
2020-03-03 12:58:50.648  INFO 34280 --- [pool-1-thread-3] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 04
2020-03-03 12:58:50.726  INFO 34280 --- [pool-1-thread-4] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 03
2020-03-03 12:58:50.800  INFO 34280 --- [pool-1-thread-5] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 02
2020-03-03 12:58:51.836  INFO 34280 --- [pool-1-thread-1] com.rss.queue.job.EchoJob                : Running com.rss.queue.job.EchoJob with state 09
Disconnected from the target VM, address: '127.0.0.1:59884', transport: 'socket'

Process finished with exit code 130 (interrupted by signal 2: SIGINT)

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