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Posted to common-dev@hadoop.apache.org by "Devaraj Das (JIRA)" <ji...@apache.org> on 2008/08/07 08:37:44 UTC

[jira] Issue Comment Edited: (HADOOP-3915) reducers hang, jobtracker loosing completely track of them.

    [ https://issues.apache.org/jira/browse/HADOOP-3915?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12620518#action_12620518 ] 

devaraj edited comment on HADOOP-3915 at 8/6/08 11:35 PM:
--------------------------------------------------------------

Is the problem to do with reducers waiting happening consistently across multiple jobs? 

      was (Author: devaraj):
    Is the problem to do with reducers waiting happening consistently? 
  
> reducers hang, jobtracker loosing completely track of them.
> -----------------------------------------------------------
>
>                 Key: HADOOP-3915
>                 URL: https://issues.apache.org/jira/browse/HADOOP-3915
>             Project: Hadoop Core
>          Issue Type: Bug
>    Affects Versions: 0.17.1
>         Environment: EC2, Debian Etch  (but not the ec2-contrib stuff)
> streaming.jar
>            Reporter: Andreas Kostyrka
>             Fix For: 0.17.2
>
>
> I just noticed the following curious situation:
> -) 18 of 22 reducers are waiting for 3 hours or so with 0.01MB/s and no progress.
> -) hadoop job -kill-task does not work on the ids shown
> -) killing all reduce work tasks (the spawned Python processes, not java TaskTracker$Child) gets completely ignored by the JobTracker, the jobtracker shows them still as running.

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