[jira] [Resolved] (NIFI-8726) Nifi hangs when running for some time

["Roman Kurmanowytsch (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/NIFI-8726?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Roman Kurmanowytsch resolved NIFI-8726.
---------------------------------------
    Resolution: Fixed

> Nifi hangs when running for some time
> -------------------------------------
>
>                 Key: NIFI-8726
>                 URL: https://issues.apache.org/jira/browse/NIFI-8726
>             Project: Apache NiFi
>          Issue Type: Bug
>          Components: Core Framework
>    Affects Versions: 1.13.2
>         Environment: Windows
>            Reporter: Roman Kurmanowytsch
>            Priority: Blocker
>         Attachments: nifi.log
>
>
> When running for some hours, Nifi seems to stop processing flowfiles. When trying to stop the process to have a look at the queues, it seems that some processors are stuck and cannot be terminated.
> In my particular case, I could not stop (among others) a simple ReplaceText processor, which just has to replace the complete content of a the flowfile by an empty String (so, no special wizardry here).
>  
> The thread dump shows this:
> {noformat}
> Timer-Driven Process Thread-2" Id=56 WAITING on java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject@32f60190
>  at java.base@11.0.9.1/jdk.internal.misc.Unsafe.park(Native Method)
>  at java.base@11.0.9.1/java.util.concurrent.locks.LockSupport.park(LockSupport.java:194)
>  at java.base@11.0.9.1/java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2081)
>  at org.apache.nifi.controller.repository.FileSystemRepository$ContainerState.waitForArchiveExpiration(FileSystemRepository.java:1660)
>  at org.apache.nifi.controller.repository.FileSystemRepository.create(FileSystemRepository.java:609)
>  at org.apache.nifi.controller.repository.claim.StandardContentClaimWriteCache.getContentClaim(StandardContentClaimWriteCache.java:63)
>  at org.apache.nifi.controller.repository.StandardProcessSession.write(StandardProcessSession.java:2782)
>  at org.apache.nifi.processors.standard.ReplaceText$AlwaysReplace.replace(ReplaceText.java:384)
>  at org.apache.nifi.processors.standard.ReplaceText.onTrigger(ReplaceText.java:318)
>  at app//org.apache.nifi.processor.AbstractProcessor.onTrigger(AbstractProcessor.java:27)
>  at org.apache.nifi.controller.StandardProcessorNode.onTrigger(StandardProcessorNode.java:1173)
>  at org.apache.nifi.controller.tasks.ConnectableTask.invoke(ConnectableTask.java:214)
>  at org.apache.nifi.controller.scheduling.TimerDrivenSchedulingAgent$1.run(TimerDrivenSchedulingAgent.java:117)
>  at org.apache.nifi.engine.FlowEngine$2.run(FlowEngine.java:110)
> [...]{noformat}
> So, it seems to wait on some lock. Interestingly, according to the thread dump, there are in total 8 threads waiting for ConditionObject@32f60190.
> Could you please check if I am doing something wrong here?
> Thank you!
>  
>  



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