0 map, 0 reduce job fails with Null Pointer Exception
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Key: MAPREDUCE-2618
URL: https://issues.apache.org/jira/browse/MAPREDUCE-2618
Project: Hadoop Map/Reduce
Issue Type: Bug
Components: mrv2
Reporter: Jeffrey Naisbitt
Assignee: Jeffrey Naisbitt
A 0 map, 0 reduce job fails with an NPE. This case works fine on hadoop-0.20.x.
The job should succeed and run setup/cleanup code - with no tasks. Below is
the stacktrace:
11/06/05 19:35:37 WARN mapred.ClientServiceDelegate:
StackTrace: java.lang.NullPointerException
at
org.apache.hadoop.mapreduce.v2.app.job.impl.JobImpl.getTaskAttemptCompletionEvents(JobImpl.java:498)
at
org.apache.hadoop.mapreduce.v2.app.client.MRClientService$MRClientProtocolHandler.getTaskAttemptCompletionEvents(MRClientService.java:290)
at
org.apache.hadoop.mapreduce.v2.api.impl.pb.service.MRClientProtocolPBServiceImpl.getTaskAttemptCompletionEvents(MRClientProtocolPBServiceImpl.java:139)
at
org.apache.hadoop.yarn.proto.MRClientProtocol$MRClientProtocolService$2.callBlockingMethod(MRClientProtocol.java:195)
at
org.apache.hadoop.yarn.ipc.ProtoOverHadoopRpcEngine$TunnelResponder.call(ProtoOverHadoopRpcEngine.java:168)
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.WritableRpcEngine$Server.call(WritableRpcEngine.java:420)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1406)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1402)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:396)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1094)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1400)
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