[ http://issues.apache.org/jira/browse/HADOOP-619?page=all ]
Sanjay Dahiya updated HADOOP-619:
---------------------------------
Attachment: Hadoop-619.patch
This patch makes following changes :
1. Accept empty input directories only if not specified as glob.
2. Remove validation code from StreamngInputFormat, there are a few other
related changes to streaming as part of HADOOP-476 ( not included in this
patch)
> Unify Map-Reduce and Streaming to take the same globbed input specification
> ---------------------------------------------------------------------------
>
> Key: HADOOP-619
> URL: http://issues.apache.org/jira/browse/HADOOP-619
> Project: Hadoop
> Issue Type: Improvement
> Components: mapred
> Reporter: eric baldeschwieler
> Assigned To: Sanjay Dahiya
> Attachments: Hadoop-619.patch
>
>
> Right now streaming input is specified very differently from other map-reduce
> input. It would be good if these two apps could take much more similar input
> specs.
> In particular -input in streaming expects a file or glob pattern while MR
> takes a directory. It would be cool if both could take a glob patern of
> files and if both took a directory by default (with some patern excluded to
> allow logs, metadata and other framework output to be safely stored).
> We want to be sure that MR input is backward compatible over this change. I
> propose that a single file should be accepted as an input or a single
> directory. Globs should only match directories if the paterns is '/'
> terminated, to avoid massive inputs specified by mistake.
> Thoughts?
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