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https://issues.apache.org/jira/browse/MAPREDUCE-1820?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12872002#action_12872002
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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/12445594/MAPREDUCE-1820.patch
against trunk revision 947758.
+1 @author. The patch does not contain any @author tags.
-1 tests included. 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.
+1 javadoc. The javadoc tool did not generate any warning messages.
-1 javac. The patch appears to cause tar ant target to fail.
-1 findbugs. The patch appears to cause Findbugs to fail.
+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 failed contrib unit tests.
Test results:
http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h4.grid.sp2.yahoo.net/206/testReport/
Checkstyle results:
http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h4.grid.sp2.yahoo.net/206/artifact/trunk/build/test/checkstyle-errors.html
Console output:
http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h4.grid.sp2.yahoo.net/206/console
This message is automatically generated.
> InputSampler does not create a deep copy of the key class 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: 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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