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From "Amareshwari Sriramadasu (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-5330) Zombie tasks remain after jobs finish/fail/get killed
Date Thu, 26 Feb 2009 05:15:04 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-5330?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12676873#action_12676873
] 

Amareshwari Sriramadasu commented on HADOOP-5330:
-------------------------------------------------

Are you seeing Zombie processes around? Then, yes it is HADOOP-5247.
But if you are seeing no processes running and just tasktracker says it is running tasks,
it is HADOOP-5269. Also a couple of race conditions got fixed in HADOOP-5233. All these will
be ported to branch 0.19.2. 

> Zombie tasks remain after jobs finish/fail/get killed
> -----------------------------------------------------
>
>                 Key: HADOOP-5330
>                 URL: https://issues.apache.org/jira/browse/HADOOP-5330
>             Project: Hadoop Core
>          Issue Type: Bug
>    Affects Versions: 0.19.1
>            Reporter: Nathan Marz
>
> I'm seeing a lot of "task attempts" around our hadoop cluster for jobs that are no longer
around. The attempts seem to be "hung", as they sit there forever. Additionally, they seem
to take up map and reduce slots in the cluster unless MapReduce is restarted. This causes
real jobs to be unable to utilize the whole cluster.

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