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Posted to common-dev@hadoop.apache.org by "Zheng Shao (JIRA)" <ji...@apache.org> on 2008/05/14 04:41:55 UTC
[jira] Created: (HADOOP-3385) hadoop streaming to support shell
pipes: "tr ' ' '\t' | cut -f 3,4"
hadoop streaming to support shell pipes: "tr ' ' '\t' | cut -f 3,4"
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Key: HADOOP-3385
URL: https://issues.apache.org/jira/browse/HADOOP-3385
Project: Hadoop Core
Issue Type: Improvement
Components: contrib/streaming
Reporter: Zheng Shao
Hadoop streaming does not support shell pipes, but a lot of times shell pipes are very useful for processing streams of data.
I don't see any reason that hadoop streaming cannot support it.
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[jira] Commented: (HADOOP-3385) hadoop streaming to support shell
pipes: "tr ' ' '\t' | cut -f 3,4"
Posted by "Owen O'Malley (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/HADOOP-3385?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12596631#action_12596631 ]
Owen O'Malley commented on HADOOP-3385:
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The problem is that streaming doesn't invoke bash. You can already do it as:
bash -c "tr ' ' '\t' | cut -f 3,4"
> hadoop streaming to support shell pipes: "tr ' ' '\t' | cut -f 3,4"
> -------------------------------------------------------------------
>
> Key: HADOOP-3385
> URL: https://issues.apache.org/jira/browse/HADOOP-3385
> Project: Hadoop Core
> Issue Type: Improvement
> Components: contrib/streaming
> Reporter: Zheng Shao
>
> Hadoop streaming does not support shell pipes, but a lot of times shell pipes are very useful for processing streams of data.
> I don't see any reason that hadoop streaming cannot support it.
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