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https://issues.apache.org/jira/browse/NIFI-7114?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17041400#comment-17041400
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Paul Kelly commented on NIFI-7114:
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The dev environment I replicated it in for the comment from Sunday is not a
member of a cluster and has no site-to-site reporting. It was a fresh
installation of NiFi 1.11.1 built from source with no changes to the default
config files and no SSL. It used the flow.xml.gz file as attached in
reproduction.zip. Unfortunately it looks like my logs have been overwritten
since Sunday, but I will leave it running again overnight tonight and hopefully
have an answer for you in the morning. Did the thread or heap dump reveal
anything interesting? I very much appreciate you looking into this. I wish I
could help isolate the cause.
> NiFi not closing file handles
> -----------------------------
>
> Key: NIFI-7114
> URL: https://issues.apache.org/jira/browse/NIFI-7114
> Project: Apache NiFi
> Issue Type: Bug
> Components: Configuration
> Affects Versions: 1.10.0, 1.11.0
> Environment: Amazon EC2 running either Amazon Linux 2 or Ubuntu 18.04.
> NiFi has been installed with no change to any configuration file.
> Reporter: Vinicius Zolin
> Priority: Major
> Attachments: destination.xml, lsof.log, lsof.zip, lsofAfter.log,
> lsofBefore.log, openFiles.xlsx, reproduction.zip, source.xml
>
>
> Since at least version 1.10 NiFi stopped closing file handles. It opens circa
> 500 files per hour (measured using lsof) without any apparent limit until it
> crashes due to too many open files.
>
> Increasing the computer open file limit is not a solution since NiFi will
> still crash, it'll only take longer to do so.
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