可以在启动集群之前添加配置单元配置，而不是在集群就绪之后。您可以在引导步骤中将它们添加为配置设置。
e、 g.您可以使用以下语法（java）在hive-site.xml中添加配置：

Map<String,String> hiveProperties = new HashMap<String,String>();
    hiveProperties.put("hive.vectorized.execution.enabled","true");
    hiveProperties.put("hive.vectorized.execution.reduce.enabled","true");
    hiveProperties.put("hive.execution.engine","Tez");
    hiveProperties.put("hive.auto.convert.join","true");
    hiveProperties.put("hive.exec.parallel","true");

    Configuration myHiveConfig = new Configuration()
    .withClassification("hive-site")
    .withProperties(hiveProperties);

    List <Application> apps = new ArrayList<Application>();
    apps.add(new Application().withName("Hadoop"));
    apps.add(new Application().withName("Hive"));
    apps.add(new Application().withName("Spark"));
    //apps.add(new Application().withName("Pig"));
    //apps.add(new Application().withName("Zeppelin-Sandbox"));

    RunJobFlowRequest request = new RunJobFlowRequest()
    .withName("abc")
        .withReleaseLabel(emrVersion) //"emr-4.3.0"
    .withServiceRole("EMR_DefaultRole")
    .withConfigurations(myHiveConfig)
        .withInstances(
                  new JobFlowInstancesConfig()
                        .withInstanceCount(numberofInstances)
                        .withKeepJobFlowAliveWhenNoSteps(true)
                        .withTerminationProtected(false)
                        .withMasterInstanceType(mserverType)
                        .withSlaveInstanceType(sserverType) 
                  )
    .withApplications(apps)
    .withJobFlowRole("EMR_EC2_DefaultRole")
    .withSteps(generalSteps);

更多详情请参见以下链接：
http://docs.aws.amazon.com/elasticmapreduce/latest/releaseguide/emr-configure-apps.html

initctl list
status hive-server2

sudo restart hive-server2
sudo stop hive-server2
sudo start hive-server2

如何在amazon emr中重新启动服务？