lostluck opened a new pull request #12816: URL: https://github.com/apache/beam/pull/12816
Per https://pkg.go.dev/mod/google.golang.org/protobuf there's a v2 variant of generated protocol buffer code for Go. As it stands, technically the v1 variants are now implemented in terms of v2, except that the base interface is now protoreflect.Message, rather than proto.MessageV. They are implemented differently, which prevents the existing beam code from "discovering" protocol buffer types on pipeline analysis. This PR resolves it. Additionally, use the v2 marshaller/unmarshaller explicitly for user elements. ------------------------ 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). See the [Contributor Guide](https://beam.apache.org/contribute) for more tips on [how to make review process smoother](https://beam.apache.org/contribute/#make-reviewers-job-easier). 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