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From "Jonathan Hsieh (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-4377) [hbck] Offline rebuild .META. from fs data only.
Date Sun, 30 Oct 2011 00:11:32 GMT

    [ https://issues.apache.org/jira/browse/HBASE-4377?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13139500#comment-13139500
] 

Jonathan Hsieh commented on HBASE-4377:
---------------------------------------

i'll do an update tomorrow or monday to
address the nits and get the 0.90 version caught up again.
                
> [hbck] Offline rebuild .META. from fs data only.
> ------------------------------------------------
>
>                 Key: HBASE-4377
>                 URL: https://issues.apache.org/jira/browse/HBASE-4377
>             Project: HBase
>          Issue Type: New Feature
>    Affects Versions: 0.92.0
>            Reporter: Jonathan Hsieh
>            Assignee: Jonathan Hsieh
>         Attachments: 0001-HBASE-4377-hbck-Offline-rebuild-.META.-from-fs-data-.0.90-v4.patch,
0001-HBASE-4377-hbck-Offline-rebuild-.META.-from-fs-data-.0.90.v3.patch, 0001-HBASE-4377-hbck-Offline-rebuild-.META.-from-fs-data-.patch,
0001-HBASE-4377-hbck-Offline-rebuild-.META.-from-fs-data-.trunk.v3.patch, 0001-HBASE-4377-hbck-Offline-rebuild-.META.-from-fs-data.0.92.v1.patch,
0001-HBASE-4377-hbck-Offline-rebuild-.META.-from-fs-data.0.92.v2.patch, EXT_AC.regioninfo,
EXT_ATU_05f84d32cbc0bdabf00e00bc2f3570f0.regioninfo, hbase-4377-trunk.v2.patch, hbase-4377.trunk.v3.txt,
hbase-4377.trunk.v4.txt, hbase-4377.trunk.v5.txt
>
>
> In a worst case situation, it may be helpful to have an offline .META. rebuilder that
just looks at the file system's .regioninfos and rebuilds meta from scratch.  Users could
move bad regions out until there is a clean rebuild.  
> It would likely fill in region split holes.  Follow on work could given options to merge
or select regions that overlap, or do online rebuilds.

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