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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