NPE in TT heartbeat when there is a problem resolving the network topology
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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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