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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] Created: (HBASE-1066) Master should support close/open/reassignment/enable/disable operations on individual regions
Date Thu, 18 Dec 2008 13:19:45 GMT
Master should support close/open/reassignment/enable/disable operations on individual regions
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                 Key: HBASE-1066
                 URL: https://issues.apache.org/jira/browse/HBASE-1066
             Project: Hadoop HBase
          Issue Type: Improvement
            Reporter: Andrew Purtell


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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