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https://issues.apache.org/jira/browse/MAPREDUCE-1489?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12848928#action_12848928
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Hadoop QA commented on MAPREDUCE-1489:
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-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12435756/MAPREDUCE-1489.patch
against trunk revision 926449.
+1 @author. The patch does not contain any @author tags.
+1 tests included. The patch appears to include 7 new or modified tests.
+1 javadoc. The javadoc tool did not generate any warning messages.
+1 javac. The applied patch does not increase the total number of javac
compiler warnings.
+1 findbugs. The patch does not introduce any new Findbugs warnings.
+1 release audit. The applied patch does not increase the total number of
release audit warnings.
-1 core tests. The patch failed core unit tests.
+1 contrib tests. The patch passed contrib unit tests.
Test results:
http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h4.grid.sp2.yahoo.net/52/testReport/
Findbugs warnings:
http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h4.grid.sp2.yahoo.net/52/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results:
http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h4.grid.sp2.yahoo.net/52/artifact/trunk/build/test/checkstyle-errors.html
Console output:
http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h4.grid.sp2.yahoo.net/52/console
This message is automatically generated.
> DataDrivenDBInputFormat should not query the database when generating only
> one split
> ------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-1489
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1489
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Components: contrib/sqoop
> Reporter: Aaron Kimball
> Assignee: Aaron Kimball
> Attachments: MAPREDUCE-1489.patch
>
>
> DataDrivenDBInputFormat runs a query to establish bounding values for each
> split it generates; but if it's going to generate only one split
> (mapreduce.job.maps == 1), then there's no reason to do this. This will
> remove overhead associated with a single-threaded import of a non-indexed
> table since it avoids a full table scan.
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