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From "Allen Wittenauer (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (MAPREDUCE-598) Streaming: better conrol over input splits
Date Thu, 17 Jul 2014 18:49:04 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-598?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Allen Wittenauer resolved MAPREDUCE-598.

    Resolution: Fixed

This has been fixed in a variety of use cases. Closing.

> Streaming: better conrol over input splits
> ------------------------------------------
>                 Key: MAPREDUCE-598
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-598
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>          Components: contrib/streaming
>            Reporter: arkady borkovsky
> In steaming, the map command usually expect to receive it's input uninterpreted -- just
as it is stored in DFS.
> However, the split (the beginning and the end of the portion of data that goes to a single
map task) is often important and is not "any line break".
> Often the input consists of multi-line docments -- e.g. in XML.
> There should be a way to specify a pattern that separates logical records.
> Existing "Streaming XML record reader" kind of provides this functionality.  However,
it is accepted that "Streaming XML" is a hack and needs to be replaced 

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