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Posted to issues@beam.apache.org by "Saavan Nanavati (Jira)" <ji...@apache.org> on 2020/08/21 00:49:00 UTC
[jira] [Updated] (BEAM-10782) Check that DoFn outputs are valid
iterables when using the performance runtime type check feature
[ https://issues.apache.org/jira/browse/BEAM-10782?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Saavan Nanavati updated BEAM-10782:
-----------------------------------
Summary: Check that DoFn outputs are valid iterables when using the performance runtime type check feature (was: Check that outputs are valid iterables when using the performance runtime type check feature)
> Check that DoFn outputs are valid iterables when using the performance runtime type check feature
> -------------------------------------------------------------------------------------------------
>
> Key: BEAM-10782
> URL: https://issues.apache.org/jira/browse/BEAM-10782
> Project: Beam
> Issue Type: Improvement
> Components: sdk-py-core
> Reporter: Saavan Nanavati
> Priority: P2
>
> Currently, when using the performance runtime type check feature, you can yield invalid iterables from a DoFn and not have an error thrown. This is incorrect behavior.
>
> We should throw a TypeCheckError if the iterable type is any of the following: dict, str, unicode, or bytes.
>
> Previously, we tried accomplishing this using an isinstance check in process_outputs of common.py, however this harms performance significantly. We should search for a cheaper way to verify that the output type is valid. One possible solution is to only do the isinstance check _if_ the flag is on.
>
>
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