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From "Karam Singh (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-4288) java.lang.NullPointerException is observed in Jobtracker log while call heartbeat
Date Mon, 29 Sep 2008 09:20:44 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-4288?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12635320#action_12635320
] 

Karam Singh commented on HADOOP-4288:
-------------------------------------

Yes, "JOb to be removed for user $user "and "No more jobs for user, number of users" are pesrent
in Jobtracker log. And problem occurs when there more than one jobs submiitted by same user
and one job of the job is finished as pointed out by Amar.
Also I  was using path for Hadoop-4053 [this|https://issues.apache.org/jira/secure/attachment/12390257/HADOOP-4053-v1.patch]
which internally calls jobRemoved 

> java.lang.NullPointerException is observed in Jobtracker log while   call heartbeat
> -----------------------------------------------------------------------------------
>
>                 Key: HADOOP-4288
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4288
>             Project: Hadoop Core
>          Issue Type: Bug
>          Components: contrib/capacity-sched
>    Affects Versions: 0.19.0
>            Reporter: Karam Singh
>            Assignee: Amar Kamat
>
> 2008-09-26 09:33:08,190 INFO org.apache.hadoop.ipc.Server: IPC Server handler 5 on 34441,
call heartbeat(org.apache.hadoop.mapred.TaskTrackerStatus@177a878, false, true, 100) from
<ipaddress:port>: error: java.io.IOException: java.lang.NullPointerException  
> is observed in Jobtracker log.

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