hadoop-common-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Klaas Bosteels (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-5979) Streaming partitioner should allow command, not just Java class
Date Fri, 05 Jun 2009 08:32:07 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5979?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12716535#action_12716535
] 

Klaas Bosteels commented on HADOOP-5979:
----------------------------------------

I think the best approach would be to let the partitioner command take key/value pairs as
input (just like the mapper command) and make it output a (new) key for each pair, which then
gets hashed to determine the partition number for the pair. Any other thoughts or comments
on this?

> Streaming partitioner should allow command, not just Java class
> ---------------------------------------------------------------
>
>                 Key: HADOOP-5979
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5979
>             Project: Hadoop Core
>          Issue Type: Improvement
>          Components: contrib/streaming
>            Reporter: Klaas Bosteels
>
> Since HADOOP-4842 got committed, Streaming allows both commands and Java classes to be
specified as mapper, reducer, and combiner, but the {{-partitioner}} option is still limited
to Java classes only. Allowing commands to be specified as partitioner as well would greatly
improve the flexibility of Streaming programs.

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.


Mime
View raw message