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From "Owen O'Malley (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-1973) NPE at JobTracker startup..
Date Mon, 01 Oct 2007 18:09:50 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-1973?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12531583
] 

Owen O'Malley commented on HADOOP-1973:
---------------------------------------

Gautam, were you running 0.14 or pre-0.15 when this happened?

> 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.. and the JT shutdown. 
> 2007-10-01 07:48:36,501 WARN org.apache.hadoop.mapred.JobTracker: Serious problem, cannot
find record of 'previous' heartbeat for '[tracker_address]:/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_address]:/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_address]:/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_address]:/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 [tracker_ip]: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)

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