nielm opened a new pull request #11532: URL: https://github.com/apache/beam/pull/11532
Grouping adds significant latency and memory use. When streaming, end-to-end pipeline latency is important, and many worker threads are executed, meaning that OOM's can frequently occur. This PR disables grouping by default in streaming mode, ensuring lower memory use and faster end-end latency. ------------------------ Thank you for your contribution! Follow this checklist to help us incorporate your contribution quickly and easily: - [ ] [**Choose reviewer(s)**](https://beam.apache.org/contribute/#make-your-change) and mention them in a comment (`R: @username`). - [ ] Format the pull request title like `[BEAM-XXX] Fixes bug in ApproximateQuantiles`, where you replace `BEAM-XXX` with the appropriate JIRA issue, if applicable. This will automatically link the pull request to the issue. - [ ] Update `CHANGES.md` with noteworthy changes. - [ ] If this contribution is large, please file an Apache [Individual Contributor License Agreement](https://www.apache.org/licenses/icla.pdf). 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