hbase-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-1066) Master should support close/open/reassignment/enable/disable operations on individual regions
Date Sun, 21 Dec 2008 16:36:44 GMT

    [ https://issues.apache.org/jira/browse/HBASE-1066?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12658396#action_12658396
] 

Andrew Purtell commented on HBASE-1066:
---------------------------------------

The HBaseAdmin.modifyTable API is perfect for that. Just add op constants and backing implementation
in HMaster for MODIFY_TABLE_CLOSE, MODIFY_TABLE_OPEN, etc. 

> 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.


-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


Mime
View raw message