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https://issues.apache.org/jira/browse/HADOOP-2600?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12559661#action_12559661
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Hadoop QA commented on HADOOP-2600:
-----------------------------------
+1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12373226/2600.patch
against trunk revision r612500.
@author +1. The patch does not contain any @author tags.
javadoc +1. The javadoc tool did not generate any warning 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 passed contrib unit tests.
Test results:
http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/1613/testReport/
Findbugs warnings:
http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/1613/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results:
http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/1613/artifact/trunk/build/test/checkstyle-errors.html
Console output:
http://lucene.zones.apache.org:8080/hudson/job/Hadoop-Patch/1613/console
This message is automatically generated.
> [hbase] Performance: HStore.getRowKeyAtOrBefore should use
> MapFile.Reader#getClosest (before)
> ---------------------------------------------------------------------------------------------
>
> Key: HADOOP-2600
> URL: https://issues.apache.org/jira/browse/HADOOP-2600
> Project: Hadoop
> Issue Type: Improvement
> Components: contrib/hbase
> Reporter: Bryan Duxbury
> Assignee: Bryan Duxbury
> Priority: Minor
> Attachments: 2600.patch
>
>
> Once HADOOP-2532 is committed, we should make use of the new MapFile method
> to improve the performance of getClosestRow. This is an important
> improvement, because this method is used to look up region locations, a very
> critical part of HBase. Currently, the needed behavior is simulated by doing
> a linear scan of the MapFile. I think that 2532 will allow us to replace this
> with an index based lookup, which should make it much faster.
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