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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 Fri, 26 Sep 2008 09:49:44 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-4288?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12634801#action_12634801
] 

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

Full Stack trace is  -:
2008-09-26 09:28:53,254 INFO org.apache.hadoop.ipc.Server: IPC Server handler 2 on 34441,
call heartbeat(org.apache.hadoop.mapred.TaskTrackerStatus@29d75, false, true, 99) from <ip:port>:
error: java.io.IOException: java.lang.Nu
llPointerException
java.io.IOException: java.lang.NullPointerException
        at org.apache.hadoop.mapred.CapacityTaskScheduler$TaskSchedulingMgr.updateQSIObjects(CapacityTaskScheduler.java:503)
        at org.apache.hadoop.mapred.CapacityTaskScheduler$TaskSchedulingMgr.assignTasks(CapacityTaskScheduler.java:717)
        at org.apache.hadoop.mapred.CapacityTaskScheduler$TaskSchedulingMgr.access$1100(CapacityTaskScheduler.java:243)
        at org.apache.hadoop.mapred.CapacityTaskScheduler.assignTasks(CapacityTaskScheduler.java:1093)
        at org.apache.hadoop.mapred.JobTracker.heartbeat(JobTracker.java:1853)
        at sun.reflect.GeneratedMethodAccessor9.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:452)
        at org.apache.hadoop.ipc.Server$Handler.run(Server.java:888)



> 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
>
> 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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