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From "Gautam Kowshik (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-1973) NPE at JobTracker startup..
Date Mon, 01 Oct 2007 09:50:50 GMT
NPE at JobTracker startup..
---------------------------

                 Key: HADOOP-1973
                 URL: https://issues.apache.org/jira/browse/HADOOP-1973
             Project: Hadoop
          Issue Type: Bug
          Components: mapred
    Affects Versions: 0.14.1
            Reporter: Gautam Kowshik



At JT startup a bunch of these were thrown..

2007-10-01 07:48:36,501 WARN org.apache.hadoop.mapred.JobTracker: Serious problem, cannot
find record of 'previous' heartbeat for 'tracker_kry101692.inktomisearch.com:/127.0.0.1:40205';
reinitializing the tasktracker
2007-10-01 07:48:36,504 WARN org.apache.hadoop.mapred.JobTracker: Serious problem, cannot
find record of 'previous' heartbeat for 'tracker_kry101682.inktomisearch.com:/127.0.0.1:57935';
reinitializing the tasktracker
2007-10-01 07:48:36,520 WARN org.apache.hadoop.mapred.JobTracker: Serious problem, cannot
find record of 'previous' heartbeat for 'tracker_kry101898.inktomisearch.com:/127.0.0.1:46305';
reinitializing the tasktracker
2007-10-01 07:48:36,523 WARN org.apache.hadoop.mapred.JobTracker: Serious problem, cannot
find record of 'previous' heartbeat for 'tracker_kry101984.inktomisearch.com:/127.0.0.1:55988';
reinitializing the tasktracker
2007-10-01 07:48:36,524 INFO org.apache.hadoop.ipc.Server: IPC Server handler 28 on 50020,
call getFilesystemName() from 68.180.166.169:47361: error: java.io.IOException: java.lang.NullPointerException
java.io.IOException: java.lang.NullPointerException
        at org.apache.hadoop.mapred.JobTracker.getFilesystemName(JobTracker.java:1458)
        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$Server.call(RPC.java:340)
        at org.apache.hadoop.ipc.Server$Handler.run(Server.java:596)


... and the JT shutdown. 

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