Details
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Bug
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Status: Closed
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Blocker
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Resolution: Fixed
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0.15.0
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None
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None
Description
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)