[jira] Updated: (HBASE-1066) Master should support close/open/reassignment/enable/disable operations on individual regions

["stack (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-1066?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

stack updated HBASE-1066:
-------------------------

    Fix Version/s: 0.19.0

Pulling into 0.19.0.  We can punt on it later.  HBASE-1073 makes for a case where we have a single region of many out of sync.  The 'repair' is currently shutting down the regionserver which is very disruptive, especially in small cluster with each node carrying many regions.  Need a way for the master to send a CLOSE region from shell/UI.  See how hard to do.

> Master should support close/open/reassignment/enable/disable operations on individual regions
> ---------------------------------------------------------------------------------------------
>
>                 Key: HBASE-1066
>                 URL: https://issues.apache.org/jira/browse/HBASE-1066
>             Project: Hadoop HBase
>          Issue Type: Improvement
>            Reporter: Andrew Purtell
>             Fix For: 0.19.0
>
>
> The master should support close/open/reassignment/enable/disable operations on individual regions by way of a client API and corresponding shell command(s), and maybe also controls on the master UI.
>  
> If one region out of 1000s is closed or offline, for example due to transient DFS problems, currently the whole table must be disabled, then reenabled to trigger reassignment and, hopefully, successful (re)open of the offline regions. The flurry of compactions this causes can exacerbate the underlying problem and actually make cluster state worse, as more DFS errors accumulate. 

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