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https://issues.apache.org/jira/browse/HBASE-2991?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12909965#action_12909965
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Andrew Ryan commented on HBASE-2991:
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@matthew: I'm not sure I understand your comment about an includes list being
unnecessary. They are part of both HDFS and Mapreduce and are very important.
If one is moving nodes between clusters, includes/excludes lists become
essential to insure that only the nodes we expect to be in the cluster are part
of the cluster.
@stack: The HDFS and Mapreduce exclusions work slightly differently today,
because in the HDFS case there is a "decommissioning" state that happens once
the exclude command is received. But basically the desired behavior for the
regionserver would be either:
1) Immediately shut down when excluded, or
2) Stay running, and periodically check to see if we are now un-excluded.
> Add support for refreshNodes in master
> --------------------------------------
>
> Key: HBASE-2991
> URL: https://issues.apache.org/jira/browse/HBASE-2991
> Project: HBase
> Issue Type: Wish
> Components: master
> Reporter: Matthew Welty
> Priority: Minor
>
> -refreshNodes capabilities should be added to bin/hbase (or to a new script
> called `hbaseadmin`, if we want to maintain command name consistency) with
> cluster exclusion functionality similar to the capabilities of dfsadmin and
> mradmin. For ease of administration, the behavior of this option should be
> procedurally identical to the functions of the Hadoop Common components,
> including modifying the exclusion list via a local 'excludes' configuration
> file and display of excluded nodes via the web UI.
> A command overview for the behavior of -refreshNodes in dfsadmin is here:
> http://hadoop.apache.org/common/docs/current/commands_manual.html#dfsadmin
> The command overview for -refreshNodes in mradmin is here:
> http://hadoop.apache.org/common/docs/current/commands_manual.html#mradmin
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