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https://issues.apache.org/jira/browse/BEAM-8046?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16916973#comment-16916973
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Chamikara Jayalath commented on BEAM-8046:
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I think the issue there is current PubSub implementation in Python SDK being a
native source/sink that is implemented in Dataflow streaming backend.
> Unable to read from bigquery and publish to pubsub using dataflow runner
> (python SDK)
> -------------------------------------------------------------------------------------
>
> Key: BEAM-8046
> URL: https://issues.apache.org/jira/browse/BEAM-8046
> Project: Beam
> Issue Type: Improvement
> Components: io-py-gcp, runner-dataflow
> Affects Versions: 2.13.0, 2.14.0
> Reporter: James Hutchison
> Priority: Major
>
> With the Python SDK:
> The dataflow runner does not allow use of reading from bigquery in streaming
> pipelines.
> Pubsub is not allowed for batch pipelines.
> Thus, there's no way to create a pipeline on the dataflow runner that reads
> from bigquery and publishes to pubsub.
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