[jira] [Resolved] (MAPREDUCE-606) Implement a binary input/output format for Streaming

["Allen Wittenauer (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/MAPREDUCE-606?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Allen Wittenauer resolved MAPREDUCE-606.
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    Resolution: Fixed

I'm closing this as fixed.  The streaming input/output system has been enhanced since this jira was filed.

> Implement a binary input/output format for Streaming
> ----------------------------------------------------
>
>                 Key: MAPREDUCE-606
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-606
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: contrib/streaming
>            Reporter: Arun C Murthy
>         Attachments: hadoop-3227.patch
>
>
> Lots of streaming applications process textual data with 1 record per line and fields separated by a delimiter. It turns out that there is no point in using any of Hadoop's input/output formats since the streaming script/binary itself will parse the input and break into records and fields. In such cases we should provide users with a binary input/output format which just sends 64k (or so) blocks of data directly from HDFS to the streaming application.
> I did something very similar for Pig-Streaming (PIG-94 - BinaryStorage) which resulted in 300%+ speedup for scanning (identity mapper & map-only jobs) data... the parsing done by input/output formats in these cases were pure-overhead.



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