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Posted to issues@beam.apache.org by "Yifan Mai (JIRA)" <ji...@apache.org> on 2019/02/25 18:14:00 UTC

[jira] [Created] (BEAM-6746) Support DoFn.setup and DoFn.teardown in Python

Yifan Mai created BEAM-6746:
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             Summary: Support DoFn.setup and DoFn.teardown in Python
                 Key: BEAM-6746
                 URL: https://issues.apache.org/jira/browse/BEAM-6746
             Project: Beam
          Issue Type: Bug
          Components: beam-model, sdk-py-core
            Reporter: Yifan Mai


DoFn.setup and DoFn.teardown is currently supported in Java but not Python. These would be useful for performing expensive per-thread initialization.

While lazy initialization is a usable workaround, first class support for setup and teardown would encourage consistent conventions and make the API more uniform with the Java version.

This is related to BEAM-3736 (same issue, but for CombineFn).



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