damccorm opened a new issue, #21675: URL: https://github.com/apache/beam/issues/21675
The current code constructs, hashes, and compares full WindowedValues for the grouping key, which ends up dominating the time spent in the combining table when using trivial combiners (like Sum.integers()). We only need compare the (structural value of the) key and windows, and can emit the windows in the global case. Imported from Jira [BEAM-14464](https://issues.apache.org/jira/browse/BEAM-14464). Original Jira may contain additional context. Reported by: robertwb. -- 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]
