damccorm opened a new issue, #19885: URL: https://github.com/apache/beam/issues/19885
The expansion of [_CombinePerKeyWithHotKeyFanout](https://github.com/apache/beam/blob/bd09a038f4df896ef6d903a4944083fcd2e8f727/sdks/python/apache_beam/transforms/core.py#L1913), which is used by [CombinePerKey.with_hot_key_fanout()](https://github.com/apache/beam/blob/bd09a038f4df896ef6d903a4944083fcd2e8f727/sdks/python/apache_beam/transforms/core.py#L1734), uses DoFns (SplitHotCold) and CombineFns (PreCombineFn, PostCombineFn) and a lambda (SplitNonce) that have no typehints. If the user specified a typehints on the original CombineFn, the typehints are lost. This means that the fallback coder rather than the user specified coder. Imported from Jira [BEAM-8520](https://issues.apache.org/jira/browse/BEAM-8520). Original Jira may contain additional context. Reported by: [email protected]. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
