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https://issues.apache.org/jira/browse/NETBEANS-2999?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16913872#comment-16913872
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Shevek commented on NETBEANS-2999:
----------------------------------

I can't reproduce it reliably, and I don't have a profiling snapshot because 
the entire IDE hung up, but I do have a heap-dump from when it happened, which 
I can't share because proprietary, but I'm happy to answer queries based on 
what it contains.

I know that's not ideal, but ... I hope that a set of OQL queries or something 
might give a useful answer for you?

I wonder if the business with lots of pointers into /tmp is a regular repro - 
I'll try with another IDE over some of my OSS projects, they're all basically 
the same, and see if I can get the characteristics, even if not the failure.

> NetBeans has consumed entire heap with WeakListenerImpl$ListenerReference
> -------------------------------------------------------------------------
>
>                 Key: NETBEANS-2999
>                 URL: https://issues.apache.org/jira/browse/NETBEANS-2999
>             Project: NetBeans
>          Issue Type: Bug
>    Affects Versions: 11.1
>            Reporter: Shevek
>            Priority: Major
>         Attachments: netbeans-all-listener-references.png
>
>
> See image.  A random sampling suggests that they're all calling 
> FileChangeListener.
> Randomly sampling: ListenerReference.weakListener.source is a FolderObj on 
> /tmp, or a pointer into .cache/netbeans/11.1index



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