You are viewing a plain text version of this content. The canonical link for it is here.

Posted to common-dev@hadoop.apache.org by "Arun C Murthy (JIRA)" <ji...@apache.org> on 2008/01/29 03:09:35 UTC

[jira] Assigned: (HADOOP-2639) Reducers stuck in shuffle

     [ https://issues.apache.org/jira/browse/HADOOP-2639?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Arun C Murthy reassigned HADOOP-2639:
-------------------------------------

    Assignee: Arun C Murthy  (was: Amar Kamat)

> Reducers stuck in shuffle
> -------------------------
>
>                 Key: HADOOP-2639
>                 URL: https://issues.apache.org/jira/browse/HADOOP-2639
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: mapred
>            Reporter: Amareshwari Sri Ramadasu
>            Assignee: Arun C Murthy
>            Priority: Blocker
>             Fix For: 0.16.0
>
>         Attachments: HADOOP-2639.patch, HADOOP-2639_1_20080128.patch
>
>
> I started sort benchmark on 500 nodes. It has 40000 maps and 900 reducers.
> There are 11 reducers stuck in shuffle with 33% progress. I could see a node down which ran 80 maps on it. And all these reducers are trying to fetch map output from that node. 

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