Zoltán Zvara created YARN-5721:
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Summary: NPE at AMRMClientImpl.getMatchingRequests
Key: YARN-5721
URL: https://issues.apache.org/jira/browse/YARN-5721
Project: Hadoop YARN
Issue Type: Bug
Components: api
Environment: Tested on Windows 10, in Dockerized Linux containers &
Ubuntu 16.04 with Java 7, Java 8.
Reporter: Zoltán Zvara
Priority: Critical
The following NPE was thrown using a Spark 2.1.0-SNAPSHOT (as client) by
changing Hadoop dependency to the latest (by the time the ERROR has been
generated).
{{2016-10-10 11:33:53,392 ERROR yarn.ApplicationMaster: Uncaught exception:
java.lang.NullPointerException
at
org.apache.hadoop.yarn.client.api.impl.AMRMClientImpl.getMatchingRequests(AMRMClientImpl.java:751)
at
org.apache.hadoop.yarn.client.api.impl.AMRMClientImpl.getMatchingRequests(AMRMClientImpl.java:734)
at
org.apache.spark.deploy.yarn.YarnAllocator.getPendingAtLocation(YarnAllocator.scala:210)
at
org.apache.spark.deploy.yarn.YarnAllocator.getPendingAllocate(YarnAllocator.scala:203)
at
org.apache.spark.deploy.yarn.YarnAllocator.updateResourceRequests(YarnAllocator.scala:318)
at
org.apache.spark.deploy.yarn.YarnAllocator.allocateResources(YarnAllocator.scala:278)
at
org.apache.spark.deploy.yarn.ApplicationMaster.registerAM(ApplicationMaster.scala:350)
at
org.apache.spark.deploy.yarn.ApplicationMaster.runExecutorLauncher(ApplicationMaster.scala:418)
at
org.apache.spark.deploy.yarn.ApplicationMaster.run(ApplicationMaster.scala:250)}}
We've also pulled the latest code (1 hour ago) from the repository, and ran a
test for {{getMatchingRequests}}. Same NPE has been encountered.
{{getMatchingRequests}} should never throw an NPE even if it has been called
right after the client has been started.
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