[jboss-jira] [JBoss JIRA] (JGRP-1576) org.jgroups.protocols.TP.ChannelThreadGroup leaks classloaders / PermGen memory

[Mattias Jiderhamn (JIRA)]

    [ https://issues.jboss.org/browse/JGRP-1576?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12751372#comment-12751372 ] 

Mattias Jiderhamn commented on JGRP-1576:
-----------------------------------------

I don't have an isolated test case.
The problem appeared when using JGroups behind Infinispan for clustered Hibernate Search / Lucene. I have little insight into how Infinispan uses JGroups, but I could upload the config files if that helps?
                
> org.jgroups.protocols.TP.ChannelThreadGroup leaks classloaders / PermGen memory
> -------------------------------------------------------------------------------
>
>                 Key: JGRP-1576
>                 URL: https://issues.jboss.org/browse/JGRP-1576
>             Project: JGroups
>          Issue Type: Feature Request
>    Affects Versions: 3.2.5
>            Reporter: Mattias Jiderhamn
>            Assignee: Bela Ban
>             Fix For: 3.2.7
>
>
> Just like JGRP-1410 there is a custom ThreadGroup org.jgroups.protocols.TP.ChannelThreadGroup which is not destroyed so the parent thread group will keep a reference and keep the classloader from being garbage collected. There is actually code for destroying the thread groups (line 1026-1030) but for some reason it is commented out.

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