hbase-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "stack (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-1457) Taking down ROOT/META regionserver can result in cluster becoming in-operational
Date Fri, 29 May 2009 17:36:45 GMT

    [ https://issues.apache.org/jira/browse/HBASE-1457?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12714525#action_12714525
] 

stack commented on HBASE-1457:
------------------------------

Patch changes MetaRegion so it takes a HRegionInfo rather than region name and startkey.

It ensures -ROOT- and .META. assignment happens first -- previous -ROOT- didn't get special
treatment.  Also, doesn't depend on getting close of catalog region.  Instead, exiting, checks
if server was carrying catalog regions and if it was, schedules them for immediate assignment
(no log splitting when server exits, as opposes to crashes).

It takes the updating of region historian out of the main code path processing alls-well messages
putting it instead on the todo queue to be processed by worker thread IF meta and root are
on line.




> Taking down ROOT/META regionserver can result in cluster becoming in-operational
> --------------------------------------------------------------------------------
>
>                 Key: HBASE-1457
>                 URL: https://issues.apache.org/jira/browse/HBASE-1457
>             Project: Hadoop HBase
>          Issue Type: Bug
>    Affects Versions: 0.20.0
>            Reporter: ryan rawson
>            Assignee: ryan rawson
>             Fix For: 0.20.0
>
>         Attachments: HBASE-1457.patch
>
>
> Take down a regionserver via controlled or uncontrolled shutdown, the master doesn't
properly reassign the root/meta regions. 

-- 
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