NPE while executing MRAppMaster shutdown hook
---------------------------------------------
Key: MAPREDUCE-4071
URL: https://issues.apache.org/jira/browse/MAPREDUCE-4071
Project: Hadoop Map/Reduce
Issue Type: Bug
Components: mr-am, mrv2
Affects Versions: 0.23.1, 0.23.2, 0.23.3
Reporter: Bhallamudi Venkata Siva Kamesh
While running the shutdown hook of MRAppMaster, hit NPE
{noformat}
Exception in thread "Thread-1" java.lang.NullPointerException
at
org.apache.hadoop.mapreduce.v2.app.MRAppMaster$ContainerAllocatorRouter.setSignalled(MRAppMaster.java:668)
at
org.apache.hadoop.mapreduce.v2.app.MRAppMaster$MRAppMasterShutdownHook.run(MRAppMaster.java:1004)
{noformat}
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