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https://issues.apache.org/jira/browse/MAPREDUCE-1820?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12885811#action_12885811
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Hadoop QA commented on MAPREDUCE-1820:
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-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12448832/M1820-4.patch
against trunk revision 960808.
+1 @author. The patch does not contain any @author tags.
+1 tests included. The patch appears to include 2 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 appears to introduce 2 new Findbugs warnings.
+1 release audit. The applied patch does not increase the total number of
release audit warnings.
+1 core tests. The patch passed core unit tests.
-1 contrib tests. The patch failed contrib unit tests.
Test results:
http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h6.grid.sp2.yahoo.net/593/testReport/
Findbugs warnings:
http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h6.grid.sp2.yahoo.net/593/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results:
http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h6.grid.sp2.yahoo.net/593/artifact/trunk/build/test/checkstyle-errors.html
Console output:
http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h6.grid.sp2.yahoo.net/593/console
This message is automatically generated.
> InputSampler does not create a deep copy of the key object when creating a
> sample, which causes problems with some formats like SequenceFile<Text,Text>
> -------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-1820
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1820
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Reporter: Alex Kozlov
> Assignee: Alex Kozlov
> Attachments: M1820-4.patch, MAPREDUCE-1820-2.patch,
> MAPREDUCE-1820-3.patch, MAPREDUCE-1820.patch
>
> Original Estimate: 2h
> Remaining Estimate: 2h
>
> I tried to use the InputSampler on a SequenceFile<Text,Text> and found that
> it comes up with duplicate keys in the sample. The problem was tracked down
> to the fact that the Text object returned from the reader is essentially a
> wrapper pointing to a byte array, which changes as the sequence file reader
> progresses. There was also a bug in that the reader should be initialized
> before the use. The am attaching a patch that fixes both of the issues.
> --Alex K
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