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https://issues.apache.org/jira/browse/HBASE-3833?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13027784#comment-13027784
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Todd Lipcon commented on HBASE-3833:
------------------------------------

If going for "same semantics as Hadoop", we should try to match the semantics 
of HDFS-1547 which adds a new "decom" file, rather than include/exclude. Most 
ops people I've talked to find the include/exclude files super confusing (what 
does it mean to be both included and excluded, for example?)

> ability to support includes/excludes list in Hbase
> --------------------------------------------------
>
>                 Key: HBASE-3833
>                 URL: https://issues.apache.org/jira/browse/HBASE-3833
>             Project: HBase
>          Issue Type: Improvement
>          Components: client, regionserver
>            Reporter: dhruba borthakur
>            Assignee: dhruba borthakur
>
> An HBase cluster currently does not have the ability to specify that the 
> master should accept regionservers only from a specified list. This helps 
> preventing administrative errors where the same machine could be included in 
> two clusters. It also allows the administrator to easily remove un-ssh-able 
> machines from the cluster.

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