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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-2532) Add to MapFile a getClosest that returns key that comes just-before if key not present (Currently does just-after only).
Date Sat, 05 Jan 2008 07:32:34 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-2532?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12556185#action_12556185
] 

Hadoop QA commented on HADOOP-2532:
-----------------------------------

-1 overall.  Here are the results of testing the latest attachment 
http://issues.apache.org/jira/secure/attachment/12372547/getclosestbefore-v2.patch
against trunk revision .

    @author +1.  The patch does not contain any @author tags.

    javadoc -1.  The javadoc tool appears to have generated  messages.

    javac +1.  The applied patch does not generate any new compiler warnings.

    findbugs +1.  The patch does not introduce any new Findbugs warnings.

    core tests +1.  The patch passed core unit tests.

    contrib tests -1.  The patch failed contrib unit tests.

Test results: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/1473/testReport/
Findbugs warnings: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/1473/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/1473/artifact/trunk/build/test/checkstyle-errors.html
Console output: http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/1473/console

This message is automatically generated.

> Add to MapFile a getClosest that returns key that comes just-before if key not present
(Currently does just-after only).
> ------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-2532
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2532
>             Project: Hadoop
>          Issue Type: New Feature
>            Reporter: stack
>            Priority: Minor
>             Fix For: 0.16.0
>
>         Attachments: getclosestbefore-v2.patch, getclosestbefore.patch
>
>
> The list of regions that make up a table in hbase are effectively kept in a mapfile.
 Regions are identified by the first row contained by that region.   To find the region that
contains a particular row, we need to be able to search the mapfile of regions to find the
closest matching row that falls just-before the searched-for key rather than the just-after
that is current mapfile getClosest behavior.

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