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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