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AsyncExecutor requirement failed: count cannot be decreased #1856

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AsyncExecutor requirement failed: count cannot be decreased#1856
Bug
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bug
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3.3

Description

@hvesalai
hvesalai
opened on Mar 2, 2018

When shutting down, this exception can sometimes be seen.

Exception in thread "AsyncExecutor.default-17" java.lang.IllegalArgumentException: requirement failed: count cannot be decreased
	at scala.Predef$.require(Predef.scala:224)
	at slick.util.ManagedArrayBlockingQueue$$anonfun$decreaseInUseCount$1.apply$mcV$sp(ManagedArrayBlockingQueue.scala:54)
	at slick.util.ManagedArrayBlockingQueue$$anonfun$decreaseInUseCount$1.apply(ManagedArrayBlockingQueue.scala:53)
	at slick.util.ManagedArrayBlockingQueue$$anonfun$decreaseInUseCount$1.apply(ManagedArrayBlockingQueue.scala:53)
	at slick.util.ManagedArrayBlockingQueue.locked(ManagedArrayBlockingQueue.scala:202)
	at slick.util.ManagedArrayBlockingQueue.decreaseInUseCount(ManagedArrayBlockingQueue.scala:53)
	at slick.util.AsyncExecutor$$anon$2$$anon$1.afterExecute(AsyncExecutor.scala:128)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1157)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)

Activity

  1. hvesalai
    added this to the Future fix release milestone on Mar 2, 2018
  2. hvesalai
    added
    bug
    on Mar 7, 2018
  3. hirofumi
    added 2 commits that reference this issue on May 24, 2018

    fix slick#1856: avoid unnecessary .decreaseInUseCount()

    2bbc764

    Avoid extra .decreaseInUseCount() of issue slick#1856

    2f7ee33

  4. nsitbon commented on Jan 18, 2019

    @nsitbon
    nsitbon
    on Jan 18, 2019

    I'm still having the same issue even with the latest version of slick (3.2.3) and number of connection = number of thread. This is really annoying because of I have another bug with my Sentry Logback appender which prevents me from dropping that kind of exception so my logs are full of this exceptions and it's really hard to see real exceptions among those.

  5. abelbryo
    added a commit that references this issue on Jan 29, 2019

    Avoid extra .decreaseInUseCount() of issue slick#1856

    6efe7bd
  6. hvesalai
    added a commit that references this issue on Jan 29, 2019

    Merge pull request #1914 from hirofumi/topic/1856

    e809514
  7. hvesalai
    modified the milestones: Future fix release, 3.3 on Jan 29, 2019
  8. hvesalai
    closed this as completedon Jan 29, 2019

  9. lenin122 commented on Apr 8, 2022

    @lenin122
    lenin122
    on Apr 8, 2022

    We still have this issue with Slick 3.3.2 inside Play Framework with play-slick 5.0.0
    Exception in thread "db-5" java.lang.IllegalArgumentException: requirement failed: count cannot be decreased

    We are using rather heavy queries inside transactional block and before we get timeout exception on get connection, we see this error.

  10. nafg commented on Jun 12, 2022

    @nafg
    nafg
    on Jun 12, 2022
    Member

    If you have the issue with Slick 3.4.0-M1 then please reopen this, otherwise there isn't anything to do on Slick's end

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