bharatviswa504 opened a new pull request #715: Command Execution in Datanode fails becaue of NPE URL: https://github.com/apache/hadoop/pull/715 The reason for this can be if we take more time in executing a task, and in taskAwait we will return state as RUNNING and continue, and now when we execute task again internally endPoint state can be shutdown. Below code can return null. So, we need a null check over there. Callable<EndpointStateMachine.EndPointStates> endpointTask = getEndPointTask(endpoint);
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