AWS服務角色

Question

我試圖從日食用下面的代碼運行EMR集羣：

RunJobFlowRequest runFlowRequest = new RunJobFlowRequest() 
      .withName("ExtractCollocations" + UUID.randomUUID()) 
      .withInstances(instances) 
      .withSteps(countStepConfig1, countStepConfig2, countStepConfig3, countStepConfig4) 
      .withLogUri("s3n://"+ Bucket_name + "/logs/") 
      .withServiceRole("EMR_DefaultRole") 
      .withJobFlowRole("EMR_EC2_DefaultRole"); 

，並得到錯誤：

Exception in thread "main" java.lang.NoSuchMethodError: com.amazonaws.services.elasticmapreduce.model.RunJobFlowRequest.withServiceRole(Ljava/lang/String;)Lcom/amazonaws/services/elasticmapreduce/model/RunJobFlowRequest; 
    at LocalApp.runCluster(LocalApp.java:213) 
    at LocalApp.main(LocalApp.java:52) 

如果我刪除行 「withServiceRole（」 EMR_DefaultRole 「）」它要求服務角色

Answer 1

顯然問題出在maven項目上。 Ive打開了新的AWS Java項目，它工作。