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https://issues.apache.org/jira/browse/BEAM-9445?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17071400#comment-17071400
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Ankur Goenka commented on BEAM-9445:
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Was trying to reproduce this error with wordcount without luck.
Seems like some weird combination where environment might be dropped.
Will try TFX chicagotaxi example.
> Preoptimize causes error with environment setup
> -----------------------------------------------
>
> Key: BEAM-9445
> URL: https://issues.apache.org/jira/browse/BEAM-9445
> Project: Beam
> Issue Type: Bug
> Components: sdk-py-core
> Reporter: Kyle Weaver
> Assignee: Ankur Goenka
> Priority: Major
>
> Setting --experiments=pre_optimize=all causes an error with StatisticsGen in
> the TFX taxi example pipeline [1]:
> File
> "[redacted]/apache_beam/runners/portability/fn_api_runner_transforms.py",
> line 250, in executable_stage_transform
> environment=components.environments[self.environment],
> TypeError: None has type NoneType, but expected one of: bytes, unicode [while
> running 'Run[StatisticsGen]']
> cc [~angoenka]
> [1]
> https://github.com/tensorflow/tfx/blob/ff314a6803675548c89a016a5110a91e5bf98024/tfx/examples/chicago_taxi_pipeline/taxi_pipeline_portable_beam.py#L155
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