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Posted to issues@beam.apache.org by "Hennadiy Leontyev (JIRA)" <ji...@apache.org> on 2019/01/03 18:08:00 UTC
[jira] [Created] (BEAM-6356) Python FileBasedCacheManager does not
respect PCoder for PCollection being cached
Hennadiy Leontyev created BEAM-6356:
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Summary: Python FileBasedCacheManager does not respect PCoder for PCollection being cached
Key: BEAM-6356
URL: https://issues.apache.org/jira/browse/BEAM-6356
Project: Beam
Issue Type: Improvement
Components: examples-python
Reporter: Hennadiy Leontyev
Assignee: Ahmet Altay
FileBasedCacheManager used by Python's InteractiveRunner does not preserve PCoder for elements of a PCollection being cached on disk. I suggest that the cache on-disk format to be changed to TFRecords (which are supported by Beam) and FileBasedCacheManager would store the desired PCoder for cached collections.
Currently, it is not possible to work with dynamically-generated protocol buffer messages in interactive runner mode because of pickling errors.
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