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https://issues.apache.org/jira/browse/GIRAPH-169?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13240112#comment-13240112
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Avery Ching commented on GIRAPH-169:
------------------------------------

How many task trackers do you have?  

Are you seeing any errors?  Is the job completing successfully?

I'm guessing that the job isn't completing successfully, since everything 
should be cleaned up.
                
> How to close all child when a job finished?
> -------------------------------------------
>
>                 Key: GIRAPH-169
>                 URL: https://issues.apache.org/jira/browse/GIRAPH-169
>             Project: Giraph
>          Issue Type: Improvement
>          Components: mapreduce
>    Affects Versions: 0.2.0
>         Environment: sles 11 x64,jdk 1.6,hadoop 0.20.205.0,1 Master and 8 
> slaves,
>            Reporter: Jianfeng Qian
>            Priority: Minor
>
> I ran pagerank at hadoop 0.20.205.0. When the job finished,the child in 
> slaves didn't quit immediately and sometimes they never quit and I have to 
> kill them. 

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