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https://issues.apache.org/jira/browse/MAPREDUCE-5457?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13789925#comment-13789925
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Hadoop QA commented on MAPREDUCE-5457:
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{color:green}+1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12607483/MAPREDUCE-5457-branch-1.patch
against trunk revision .
{color:green}+1 @author{color}. The patch does not contain any @author
tags.
{color:green}+1 tests included{color}. The patch appears to include 1 new
or modified test files.
{color:green}+1 javac{color}. The applied patch does not increase the
total number of javac compiler warnings.
{color:green}+1 javadoc{color}. The javadoc tool did not generate any
warning messages.
{color:green}+1 eclipse:eclipse{color}. The patch built with
eclipse:eclipse.
{color:green}+1 findbugs{color}. The patch does not introduce any new
Findbugs (version 1.3.9) warnings.
{color:green}+1 release audit{color}. The applied patch does not increase
the total number of release audit warnings.
{color:green}+1 core tests{color}. The patch passed unit tests in .
{color:green}+1 contrib tests{color}. The patch passed contrib unit tests.
Test results:
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/4105//testReport/
Console output:
https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/4105//console
This message is automatically generated.
> Add a KeyOnlyTextOutputReader to enable streaming to write out text files
> without separators
> --------------------------------------------------------------------------------------------
>
> Key: MAPREDUCE-5457
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-5457
> Project: Hadoop Map/Reduce
> Issue Type: Improvement
> Affects Versions: 2.1.0-beta
> Reporter: Sandy Ryza
> Assignee: Sandy Ryza
> Attachments: MAPREDUCE-5457-branch-1.patch, MAPREDUCE-5457.patch
>
>
> MR jobs sometimes want to just output lines of text, not key/value pairs.
> TextOutputFormat handles this by, if a null value is given, outputting only
> the key with no separator. Streaming jobs are unable to take advantage of
> this, because they can't output null values. A text output format reader
> takes each line as a key and outputs NullWritables for values would allow
> streaming jobs to output lines of text.
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