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https://issues.apache.org/jira/browse/MAPREDUCE-820?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vinod K V resolved MAPREDUCE-820.
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Resolution: Duplicate
> NPE in TT heartbeat when there is a problem resolving the network topology
> --------------------------------------------------------------------------
>
> Key: MAPREDUCE-820
> URL: https://issues.apache.org/jira/browse/MAPREDUCE-820
> Project: Hadoop Map/Reduce
> Issue Type: Bug
> Components: jobtracker
> Reporter: Ramya R
> Priority: Minor
>
> When there is a problem while resolving the network topology (such as a non
> existent topology.script.file.name), NPE is being thrown in the TT
> heartbeats. Below is the exception obtained:
> {noformat}
> error: java.io.IOException: java.lang.NullPointerException
> java.io.IOException: java.lang.NullPointerException
> at
> org.apache.hadoop.mapred.JobTracker.resolveAndAddToTopology(JobTracker.java:2663)
> at
> org.apache.hadoop.mapred.JobTracker.addNewTracker(JobTracker.java:2645)
> at
> org.apache.hadoop.mapred.JobTracker.processHeartbeat(JobTracker.java:3093)
> at org.apache.hadoop.mapred.JobTracker.heartbeat(JobTracker.java:2836)
> 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$Server.call(RPC.java:508)
> at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:959)
> at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:955)
> at java.security.AccessController.doPrivileged(Native Method)
> at javax.security.auth.Subject.doAs(Subject.java:396)
> at org.apache.hadoop.ipc.Server$Handler.run(Server.java:953)
> {noformat}
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