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From "Mukul Kumar Singh (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDDS-158) DatanodeStateMachine endPoint task throws NullPointerException
Date Sat, 09 Jun 2018 05:48:00 GMT
Mukul Kumar Singh created HDDS-158:
--------------------------------------

             Summary: DatanodeStateMachine endPoint task throws NullPointerException
                 Key: HDDS-158
                 URL: https://issues.apache.org/jira/browse/HDDS-158
             Project: Hadoop Distributed Data Store
          Issue Type: Bug
          Components: Ozone Datanode
    Affects Versions: 0.2.1
            Reporter: Mukul Kumar Singh
             Fix For: 0.2.1


While running Ozone, I was able to see the following exception on the datanodes.

{code}
2018-06-09 00:15:09,541 [Datanode State Machine Thread - 0] ERROR      - Error in executing
end point task.
java.util.concurrent.ExecutionException: java.lang.NullPointerException
        at java.util.concurrent.FutureTask.report(FutureTask.java:122)
        at java.util.concurrent.FutureTask.get(FutureTask.java:192)
        at org.apache.hadoop.ozone.container.common.states.datanode.RunningDatanodeState.computeNextContainerState(RunningDatanodeState.java:137)
        at org.apache.hadoop.ozone.container.common.states.datanode.RunningDatanodeState.await(RunningDatanodeState.java:174)
        at org.apache.hadoop.ozone.container.common.states.datanode.RunningDatanodeState.await(RunningDatanodeState.java:46)
        at org.apache.hadoop.ozone.container.common.statemachine.StateContext.execute(StateContext.java:233)
        at org.apache.hadoop.ozone.container.common.statemachine.DatanodeStateMachine.start(DatanodeStateMachine.java:147)
        at org.apache.hadoop.ozone.container.common.statemachine.DatanodeStateMachine.lambda$startDaemon$0(DatanodeStateMachine.java:294)
        at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException
        at com.google.protobuf.GeneratedMessage$FieldAccessorTable.getField(GeneratedMessage.java:1535)
        at com.google.protobuf.GeneratedMessage$FieldAccessorTable.access$100(GeneratedMessage.java:1449)
        at com.google.protobuf.GeneratedMessage$Builder.setField(GeneratedMessage.java:366)
        at org.apache.hadoop.ozone.container.common.states.endpoint.HeartbeatEndpointTask.addReports(HeartbeatEndpointTask.java:128)
        at org.apache.hadoop.ozone.container.common.states.endpoint.HeartbeatEndpointTask.call(HeartbeatEndpointTask.java:106)
        at org.apache.hadoop.ozone.container.common.states.endpoint.HeartbeatEndpointTask.call(HeartbeatEndpointTask.java:51)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        ... 1 more

{code}



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