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https://issues.apache.org/jira/browse/ZOOKEEPER-602?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13848865#comment-13848865
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Rakesh R commented on ZOOKEEPER-602:
------------------------------------

Thank you [~phunt] for looking at this. I agree its not a blocker for 3.4.6. 
I've added fix version 3.4.6, because I have seen many cases related to missing 
threads. I thought this fix doesn't affect compatibility and will be helpful to 
know about the reason of thread exit.

> log all exceptions not caught by ZK threads
> -------------------------------------------
>
>                 Key: ZOOKEEPER-602
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-602
>             Project: ZooKeeper
>          Issue Type: Bug
>          Components: java client, server
>    Affects Versions: 3.2.1
>            Reporter: Patrick Hunt
>            Assignee: Rakesh R
>            Priority: Critical
>             Fix For: 3.5.0
>
>         Attachments: ZOOKEEPER-602.patch, ZOOKEEPER-602.patch, 
> ZOOKEEPER-602.patch, ZOOKEEPER-602.patch, ZOOKEEPER-602.patch, 
> ZOOKEEPER-602.patch, ZOOKEEPER-602.patch
>
>
> the java code should add a ThreadGroup exception handler that logs at ERROR 
> level any uncaught exceptions thrown by Thread run methods.



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