Mukul Kumar Singh created HDDS-158:
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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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