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https://issues.apache.org/jira/browse/HBASE-24341?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17104150#comment-17104150
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Junhong Xu commented on HBASE-24341:
------------------------------------

There are two +1s for this patch from [~anoop.hbase] and [~binlijin] 
respectively, is there anybody who kindly merge the pull request and resolve 
this issue?

> The region should be removed from ConfigurationManager as a 
> ConfigurationObserver when it is closed
> ---------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-24341
>                 URL: https://issues.apache.org/jira/browse/HBASE-24341
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Junhong Xu
>            Assignee: Junhong Xu
>            Priority: Minor
>
> When the region is opened, we register the region to the ConfigurationManager 
> as a ConfigurationObserver object.However, when the region is closed, we 
> don't deregister the region as a ConfigurationObserver object from the 
> ConfigurationManager correspondingly. It's not a bug for now cos we can 
> update the conf  whenever the region is open or not.But it is bug-prone, and 
> we should remove it from the ConfigureManager object when the region is 
> closed.



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