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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-7846) Add support for merging implicit regions in Merge tool
Date Wed, 18 Dec 2013 19:35:07 GMT

    [ https://issues.apache.org/jira/browse/HBASE-7846?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13852071#comment-13852071
] 

Hadoop QA commented on HBASE-7846:
----------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12574876/HBASE-7846-v2-trunk.patch
  against trunk revision .
  ATTACHMENT ID: 12574876

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:red}-1 tests included{color}.  The patch doesn't appear to include any new or modified
tests.
                        Please justify why no new tests are needed for this patch.
                        Also please list what manual steps were performed to verify this patch.

    {color:red}-1 patch{color}.  The patch command could not apply the patch.

Console output: https://builds.apache.org/job/PreCommit-HBASE-Build/8213//console

This message is automatically generated.

> Add support for merging implicit regions in Merge tool
> ------------------------------------------------------
>
>                 Key: HBASE-7846
>                 URL: https://issues.apache.org/jira/browse/HBASE-7846
>             Project: HBase
>          Issue Type: Improvement
>          Components: util
>            Reporter: Kaufman Ng
>            Assignee: Jean-Marc Spaggiari
>            Priority: Minor
>         Attachments: HBASE-7846-v0-trunk.patch, HBASE-7846-v1-trunk.patch, HBASE-7846-v2-trunk.patch
>
>
> Currently org.apache.hadoop.hbase.util.Merge needs 2 region names to be explicitly specified
to perform a merge.  This can be cumbersome.
> One idea for improvement is to have Merge to figure out all the adjacent regions and
perform the merges.  
> For example:
> regions before merge: row-10, row-20, row-30, row-40, row-50
> regions after merge: row-10, row-30, row-50
> In the above example, region names of "row-10" and "row-20" are merged to become a new
bigger region of "row-10".



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