[
https://issues.apache.org/jira/browse/MAPREDUCE-5457?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13792058#comment-13792058
]
Alejandro Abdelnur commented on MAPREDUCE-5457:
-----------------------------------------------
LGTM, it would be good to have a testcase using streaming.
> 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.
--
This message was sent by Atlassian JIRA
(v6.1#6144)
