hadoop-mapreduce-issues mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Ramkumar Vadali (JIRA)" <j...@apache.org>
Subject [jira] Commented: (MAPREDUCE-1367) LocalJobRunner should support parallel mapper execution
Date Tue, 30 Nov 2010 01:17:13 GMT

    [ https://issues.apache.org/jira/browse/MAPREDUCE-1367?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12965054#action_12965054
] 

Ramkumar Vadali commented on MAPREDUCE-1367:
--------------------------------------------

@Aaron, Just curious, is this being used in production? If so, could you please outline the
use case?

> LocalJobRunner should support parallel mapper execution
> -------------------------------------------------------
>
>                 Key: MAPREDUCE-1367
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-1367
>             Project: Hadoop Map/Reduce
>          Issue Type: Improvement
>            Reporter: Aaron Kimball
>            Assignee: Aaron Kimball
>             Fix For: 0.21.0
>
>         Attachments: MAPREDUCE-1367.2.patch, MAPREDUCE-1367.3.patch, MAPREDUCE-1367.4.patch,
MAPREDUCE-1367.5.patch, MAPREDUCE-1367.6.patch, MAPREDUCE-1367.7.patch, MAPREDUCE-1367.patch
>
>
> The LocalJobRunner currently supports only a single execution thread. Given the prevalence
of multi-core CPUs, it makes sense to allow users to run multiple tasks in parallel for improved
performance on small (local-only) jobs.

-- 
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