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From "Enis Soztutar (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-8219) Align Offline Merge with Online Merge
Date Fri, 29 Mar 2013 17:11:19 GMT

    [ https://issues.apache.org/jira/browse/HBASE-8219?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13617524#comment-13617524
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Enis Soztutar commented on HBASE-8219:
--------------------------------------

Some dev@ discussions for this was at: http://search-hadoop.com/m/j2Szb1U3Bzf/online+merge&subj=Re+How+to+replace+MetaUtils+ScannerListener+

I agree that there should be one tool called Merge, which would work in online mode or offline
mode. I was suggesting to get rid of offline one, because on the longer term, it does not
make sense to have offline split / merge code. But let's keep the offline merge for now, and
reevaluate when the time comes. 

                
> Align Offline Merge with Online Merge
> -------------------------------------
>
>                 Key: HBASE-8219
>                 URL: https://issues.apache.org/jira/browse/HBASE-8219
>             Project: HBase
>          Issue Type: Task
>          Components: regionserver
>    Affects Versions: 0.95.0
>            Reporter: Matteo Bertozzi
>            Assignee: chunhui shen
>         Attachments: hbase-8219v1.patch
>
>
> After HBASE-7403 we now have two different tools for online and offline merge, and the
result produced by the two are different. (the online one works with snapshots, the offline
not)
> We should remove the offline one, or align it to the online code.
> Most of the offline code in HRegion.merge() can be replaced with the one in RegionMergeTransaction,
used by the online version.

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