由ApplicationMaster启动一个Container的步骤

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1. 申请Container

1) 连接ResourceManager

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3) 连接该Container属于的ContainerManager
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FinishApplicationMasterRequest finishReq = Records.newRecord(FinishApplicationMasterRequest.class);finishReq.setAppAttemptId(appAttemptID);finishReq.setFinishApplicationStatus(FinalApplicationStatus.SUCCEEDED);// finishReq.setFinishApplicationStatus(FinalApplicationStatus.FAILED);finishReq.setDiagnostics(diagnostics);resourceManager.finishApplicationMaster(finishReq);