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Posted to commits@beam.apache.org by "Alex Amato (JIRA)" <ji...@apache.org> on 2018/10/04 19:53:00 UTC

[jira] [Created] (BEAM-5654) Race condition in python sdk_worker causing KeyError

Alex Amato created BEAM-5654:
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             Summary: Race condition in python sdk_worker causing KeyError
                 Key: BEAM-5654
                 URL: https://issues.apache.org/jira/browse/BEAM-5654
             Project: Beam
          Issue Type: New Feature
          Components: sdk-py-core
            Reporter: Alex Amato
            Assignee: Ahmet Altay


We save Dataflow pipelines hitting a key error when hitting this line. This is likely due to a race condition between the key existence check and accessing it.

[https://github.com/apache/beam/blob/v2.6.0/sdks/python/apache_beam/runners/worker/sdk_worker.py#L189]

One fix would be to do a single lookup for the value instead of the double lookup.



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