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From "Matei Zaharia (JIRA)" <j...@apache.org>
Subject [jira] [Assigned] (MAPREDUCE-2307) Exception thrown in Jobtracker logs, when the Scheduler configured is FairScheduler.
Date Fri, 08 Apr 2011 18:40:05 GMT

     [ https://issues.apache.org/jira/browse/MAPREDUCE-2307?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Matei Zaharia reassigned MAPREDUCE-2307:
----------------------------------------

    Assignee: Devaraj K

> Exception thrown in Jobtracker logs, when the Scheduler configured is FairScheduler.
> ------------------------------------------------------------------------------------
>
>                 Key: MAPREDUCE-2307
>                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-2307
>             Project: Hadoop Map/Reduce
>          Issue Type: Bug
>          Components: contrib/fair-share
>    Affects Versions: 0.23.0
>            Reporter: Devaraj K
>            Assignee: Devaraj K
>            Priority: Minor
>             Fix For: 0.23.0
>
>         Attachments: MAPREDUCE-2307.patch
>
>
> If we try to start the job tracker with fair scheduler using the default configuration,
It is giving the below exception.
> {code:xml} 
> 2010-07-03 10:18:27,142 INFO org.apache.hadoop.ipc.Server: IPC Server handler 2 on 9001:
starting
> 2010-07-03 10:18:27,143 INFO org.apache.hadoop.ipc.Server: IPC Server handler 3 on 9001:
starting
> 2010-07-03 10:18:27,143 INFO org.apache.hadoop.ipc.Server: IPC Server handler 4 on 9001:
starting
> 2010-07-03 10:18:27,143 INFO org.apache.hadoop.ipc.Server: IPC Server handler 5 on 9001:
starting
> 2010-07-03 10:18:27,143 INFO org.apache.hadoop.ipc.Server: IPC Server handler 6 on 9001:
starting
> 2010-07-03 10:18:27,143 INFO org.apache.hadoop.ipc.Server: IPC Server handler 7 on 9001:
starting
> 2010-07-03 10:18:27,143 INFO org.apache.hadoop.ipc.Server: IPC Server handler 8 on 9001:
starting
> 2010-07-03 10:18:27,143 INFO org.apache.hadoop.mapred.JobTracker: Starting RUNNING
> 2010-07-03 10:18:27,143 INFO org.apache.hadoop.ipc.Server: IPC Server handler 9 on 9001:
starting
> 2010-07-03 10:18:28,037 INFO org.apache.hadoop.net.NetworkTopology: Adding a new node:
/default-rack/linux172.site
> 2010-07-03 10:18:28,090 INFO org.apache.hadoop.net.NetworkTopology: Adding a new node:
/default-rack/linux177.site
> 2010-07-03 10:18:40,074 ERROR org.apache.hadoop.mapred.PoolManager: Failed to reload
allocations file - will use existing allocations.
> java.lang.NullPointerException
> at java.io.File.<init>(File.java:222)
> at org.apache.hadoop.mapred.PoolManager.reloadAllocsIfNecessary(PoolManager.java:127)
> at org.apache.hadoop.mapred.FairScheduler.assignTasks(FairScheduler.java:234)
> at org.apache.hadoop.mapred.JobTracker.heartbeat(JobTracker.java:2785)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:513)
> at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:984)
> at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:980)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:396)
> at org.apache.hadoop.ipc.Server$Handler.run(Server.java:978)
> {code} 

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