hadoop-mapreduce-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
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 



--
This message was sent by Atlassian JIRA
(v6.2#6252)

Mime
View raw message