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Posted to issues@beam.apache.org by "Ryan Thompson (Jira)" <ji...@apache.org> on 2022/01/04 17:28:00 UTC

[jira] [Created] (BEAM-13595) Disable save_main_session when using cloudpickle

Ryan Thompson created BEAM-13595:
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             Summary: Disable save_main_session when using cloudpickle
                 Key: BEAM-13595
                 URL: https://issues.apache.org/jira/browse/BEAM-13595
             Project: Beam
          Issue Type: New Feature
          Components: sdk-py-core
            Reporter: Ryan Thompson
            Assignee: Ryan Thompson


[save_main_session|https://github.com/apache/beam/blob/17b62ad9e050f80a88793457aee710ea4711d47b/sdks/python/apache_beam/options/pipeline_options.py#L1089] is a flag in the python sdk that is used by the dill library to save all classes/variables/lambas in memory.

 

When the cloudpickle library is used, no session is saved (it is a no op). However, if the runner sees the save_main_session option set it may try to access/move/manager the save_main_session saved file.

 

To avoid this, when cloudpickle is the main library save_main_session should be false.

 

See also:

https://issues.apache.org/jira/browse/BEAM-13386



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