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From "Amareshwari Sriramadasu (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MAPREDUCE-1517) streaming should support running on background
Date Mon, 13 Sep 2010 11:05:37 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-1517?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12908718#action_12908718
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Amareshwari Sriramadasu commented on MAPREDUCE-1517:
----------------------------------------------------

bq. A new patch for current trunk is now available and the old files are deleted. 
Thanks Bochun for the patch. But, next time please do not delete the old patch files because
they would be useful for tracking the history.

Changes in the patch look good. Minor nits:
* Can you change the help message for the option to "Submit the job and don't wait *till*
it completes." Also, log message should say "Job is running *in* background".
* Also, can you add the option to the table in src/docs/src/documentation/content/xdocs/streaming.xml
in "Streaming Command Options" section.


> streaming should support running on background
> ----------------------------------------------
>
>                 Key: MAPREDUCE-1517
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1517
>             Project: Hadoop Map/Reduce
>          Issue Type: New Feature
>          Components: contrib/streaming
>            Reporter: Bochun Bai
>         Attachments: contrib-streaming-background.patch
>
>
> StreamJob submit the job and use a while loop monitor the progress.
> I prefer it running on background.
> Just add "&" at the end of command is a alternative solution, but it keeps a java
process on client machine.
> When submit hundreds jobs at the same time, the client machine is overloaded.
> Adding a -background option to StreamJob, tell it only submit and don't monitor the progress.

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