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https://issues.apache.org/jira/browse/HBASE-6165?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13432022#comment-13432022
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Zhihong Ted Yu commented on HBASE-6165:
---------------------------------------

w.r.t. default value for hbase.regionserver.custom.priority.handler.count, I 
agree with Lars and Elliot that the default should be > 0.
Actually we should perform check on the actual value: if user specifies 0 and 
either replication or security is enabled, we should raise the value to, say, 3.
                
> Replication can overrun .META scans on cluster re-start
> -------------------------------------------------------
>
>                 Key: HBASE-6165
>                 URL: https://issues.apache.org/jira/browse/HBASE-6165
>             Project: HBase
>          Issue Type: Bug
>            Reporter: Elliott Clark
>         Attachments: HBase-6165-v1.patch
>
>
> When restarting a large set of regions on a reasonably small cluster the 
> replication from another cluster tied up every xceiver meaning nothing could 
> be onlined.

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