DataflowRunner空指针异常（GCP）

Question

数据流作业中出现空指针异常

SQL> Create or Replace Procedure Get_Serial( o_value out varchar2 ) Is
  2  Begin
  3    Select *
  4      Into o_value
  5      From (Select Max(Regexp_Substr('C507|C507', '[^|]+', 1, Level)) serial
  6              From Dual
  7            Connect By Level <= Length('C507|C507') -
  8                       Length(Replace('C507|C507', '|', '')) + 1);
  9  End;
 10  /

Procedure created

SQL> var serial varchar2;
SQL> exec Get_Serial(:serial);

PL/SQL procedure successfully completed
serial
---------
C507

一旦尝试建立管道，空指针将位于pipeline.run（）。如果我将options.setRunner（DataflowRunner.class）更改为options.setRunner（DirectRunner.class），效果很好

以下是错误日志跟踪。

DataflowPipelineOptions options = PipelineOptionsFactory.
                as(DataflowPipelineOptions.class);
 options.setProject("myproject");
      options.setStagingLocation("gs://labtmp/tmp");
      options.setRunner(DataflowRunner.class);
      options.setGcpTempLocation("gs://ibmlabtmp/tmp");
      options.setGcpCredential(ServiceAccountCredentials.getApplicationDefault().
       fromStream(new 
       FileInputStream("/My First Project-bcb4cc2bf1ad.json"))
       .createScoped(Arrays.asList(new String[] {"https://www.googleapis.com/auth/cloud-platform"})));
        options.setTempLocation("gs://labtmp/tmp");
        options.setServiceAccount("616262334456-compute@developer.gserviceaccount.com");
        options.setMaxNumWorkers(5);
        options.setDiskSizeGb(500);
        options.setWorkerMachineType("n1-standard-4");
        options.setAutoscalingAlgorithm(AutoscalingAlgorithmType.THROUGHPUT_BASED);
        options.setStreaming(false);
        options.setJobName("myjob");


      Pipeline pipeline = Pipeline.create(options);

      sp.doProcessing(pipeline);
      pipeline.run();