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https://issues.apache.org/jira/browse/ZOOKEEPER-1659?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14004654#comment-14004654
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Rakesh R commented on ZOOKEEPER-1659:
-------------------------------------

Attaching new patch where it will identify the diff as follows. With this it 
won't do unnecessary un-registration of the existing beans and avoided the 
possibility of above mentioned exceptions.
# new members will register their beans
# existing members will update their QS instance
# leaving members will be unregistered

> Add JMX support for dynamic reconfiguration
> -------------------------------------------
>
>                 Key: ZOOKEEPER-1659
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-1659
>             Project: ZooKeeper
>          Issue Type: Bug
>          Components: server
>    Affects Versions: 3.5.0
>            Reporter: Alexander Shraer
>            Assignee: Rakesh R
>            Priority: Blocker
>             Fix For: 3.5.0
>
>         Attachments: ZOOKEEPER-1659.patch, ZOOKEEPER-1659.patch
>
>
> We need to update JMX during reconfigurations. Currently, reconfiguration 
> changes are not reflected in JConsole.



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