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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (HBASE-1066) Master should support close/open/reassignment/enable/disable operations on individual regions
Date Tue, 23 Dec 2008 23:12:44 GMT

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

stack resolved HBASE-1066.
--------------------------

    Resolution: Fixed

Committed after removing notion of clean.  It doesn't add anything.  Can not clean the SERVER
and STARTCODE but hbase will assign the region again anyways in the region close handler.
 Can add more tools easy enough as we go.  This should do as a start.

> 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
>            Assignee: stack
>             Fix For: 0.19.0
>
>         Attachments: 1066-v3.patch, 1066-v4.patch, 1066.patch
>
>
> 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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