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https://issues.apache.org/jira/browse/BEAM-2400?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16278936#comment-16278936
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Tobi Vollebregt commented on BEAM-2400:
---------------------------------------
My request: change PipelineResult / waitUntilFinish so you can safely call
{{p.run().waitUntilFinish()}}, both when staging a template and when running a
job.
That is, I think it would be nice if {{waitUntilFinish}} is a no-op when
staging a template.
> Null pointer exception when creating a template
> -----------------------------------------------
>
> Key: BEAM-2400
> URL: https://issues.apache.org/jira/browse/BEAM-2400
> Project: Beam
> Issue Type: Bug
> Components: runner-dataflow
> Reporter: Melissa Pashniak
> Priority: Minor
>
> The template is successfully created, but is then followed by a null pointer
> exception.
> Command:
> mvn compile exec:java -Dexec.mainClass=com.example.WordCount
> -Dexec.args="--runner=DataflowRunner \
> --project=my-project \
> --stagingLocation=gs://my-bucket/staging \
> --output=gs://my-bucket/output/outputfile \
> --templateLocation=gs://my-bucket/templates/mytemplate"
> INFO: Template successfully created.
> [WARNING]
> java.lang.reflect.InvocationTargetException
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.lang.reflect.Method.invoke(Method.java:606)
> at org.codehaus.mojo.exec.ExecJavaMojo$1.run(ExecJavaMojo.java:293)
> at java.lang.Thread.run(Thread.java:745)
> Caused by: java.lang.NullPointerException
> at
> org.apache.beam.runners.dataflow.DataflowPipelineJob.getJobWithRetries(DataflowPipelineJob.java:489)
> at
> org.apache.beam.runners.dataflow.DataflowPipelineJob.getStateWithRetries(DataflowPipelineJob.java:465)
> at
> org.apache.beam.runners.dataflow.DataflowPipelineJob.waitUntilFinish(DataflowPipelineJob.java:304)
> at
> org.apache.beam.runners.dataflow.DataflowPipelineJob.waitUntilFinish(DataflowPipelineJob.java:240)
> at
> org.apache.beam.runners.dataflow.DataflowPipelineJob.waitUntilFinish(DataflowPipelineJob.java:193)
> at
> org.apache.beam.runners.dataflow.DataflowPipelineJob.waitUntilFinish(DataflowPipelineJob.java:186)
> at com.example.WordCount.main(WordCount.java:184)
> ... 6 more
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