Hadoop Map/Reduce
  1. Hadoop Map/Reduce
  2. MAPREDUCE-2307

Exception thrown in Jobtracker logs, when the Scheduler configured is FairScheduler.

    Details

    • Type: Bug Bug
    • Status: Closed
    • Priority: Minor Minor
    • Resolution: Fixed
    • Affects Version/s: 0.23.0
    • Fix Version/s: 0.23.0
    • Component/s: contrib/fair-share
    • Labels:
      None

      Description

      If we try to start the job tracker with fair scheduler using the default configuration, It is giving the below exception.

       
      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)
      

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          People

          • Assignee:
            Devaraj K
            Reporter:
            Devaraj K
          • Votes:
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            Dates

            • Created:
              Updated:
              Resolved:

              Development