Pei He created BEAM-764:
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             Summary: Remove cloneAs from PipelineOptions
                 Key: BEAM-764
                 URL: https://issues.apache.org/jira/browse/BEAM-764
             Project: Beam
          Issue Type: Task
            Reporter: Pei He
            Assignee: Pei He


PipelineOptions.cloneAs was a workaround to support running multiple pipelines 
in Dataflow examples for a streaming pipeline and its injector.

After the Beam examples refactoring, cloneAs is no longer needed.
cloneAs also has known issue, such as: JsonIgnore fields are not cloned, and 
requires users to manually set them. So, I am deleting it. 

However, we should figure out a better API and implementation to support 
running multiple pipelines with the same configurations (whether through 
PipelineOptions or not).



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