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https://issues.apache.org/jira/browse/MAPREDUCE-1772?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12886335#action_12886335
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Hadoop QA commented on MAPREDUCE-1772:
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-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12448966/patch-1772.txt
against trunk revision 961578.
+1 @author. The patch does not contain any @author tags.
+0 tests included. The patch appears to be a documentation patch that
doesn't require 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 failed contrib unit tests.
Test results:
http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h6.grid.sp2.yahoo.net/594/testReport/
Findbugs warnings:
http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h6.grid.sp2.yahoo.net/594/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Checkstyle results:
http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h6.grid.sp2.yahoo.net/594/artifact/trunk/build/test/checkstyle-errors.html
Console output:
http://hudson.zones.apache.org/hudson/job/Mapreduce-Patch-h6.grid.sp2.yahoo.net/594/console
This message is automatically generated.
> Hadoop streaming doc should not use IdentityMapper as an example
> ----------------------------------------------------------------
>
> Key: MAPREDUCE-1772
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-1772
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: contrib/streaming, documentation
> Reporter: Marco Nicosia
> Assignee: Amareshwari Sriramadasu
> Priority: Minor
> Fix For: 0.22.0
>
> Attachments: patch-1772.txt
>
>
> From the URL http://hadoop.apache.org/core/docs/current/streaming.html
> This example doesn't work:
> {quote}
> You can supply a Java class as the mapper and/or the reducer. The above
> example is equivalent to:
> $HADOOP_HOME/bin/hadoop jar $HADOOP_HOME/hadoop-streaming.jar \
> -input myInputDirs \
> -output myOutputDir \
> -mapper org.apache.hadoop.mapred.lib.IdentityMapper \
> -reducer /bin/wc
> {quote}
> This will produce the following exception:
> {quote}
> java.io.IOException: Type mismatch in key from map: expected
> org.apache.hadoop.io.Text, recieved org.apache.hadoop.io.LongWritable
> {quote}
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