dylanhz opened a new pull request, #29133: URL: https://github.com/apache/flink/pull/29133
## What is the purpose of the change Fix [FLINK-40597](https://issues.apache.org/jira/browse/FLINK-40597): a DataStream created with explicit `Types.UUID` can fail input type validation for a non-lambda `MapFunction<UUID, String>` with `Input mismatch: Basic type expected.` ## Brief change log - Recognize `java.util.UUID` when validating explicitly specified basic type information. - Leave UUID extraction without explicit type information unchanged (`GenericTypeInfo<UUID>` with Kryo by default). Automatic extraction as `Types.UUID` is tracked separately in [FLINK-40546](https://issues.apache.org/jira/browse/FLINK-40546). ## Verifying this change - Added a `fromData(Types.UUID, ...).map(...)` regression test and a check that `fromData(...)` still infers `GenericTypeInfo<UUID>`. - Confirmed the regression test fails without the fix and passes with it. - `DataStreamTest` and `TypeExtractorTest`: 102 tests passed after rebasing onto master. - Full `./mvnw clean verify` was attempted. After resolving a local Python executable issue and resuming, verification stopped at `flink-s3-fs-base`: `SeaweedFsTestContainerTest` requires Docker, which is not installed locally. Subsequent modules have not been verified. ## Does this pull request potentially affect one of the following parts: - Dependencies: no - Public API: yes, fixes validation in the existing `@Public` `TypeExtractor`; no API signatures change - Serializers: no - Runtime per-record code paths: no - Deployment or recovery: no - S3 file system connector: no ## Documentation - Does this pull request introduce a new feature? no - If yes, how is the feature documented? not applicable --- ##### Was generative AI tooling used to co-author this PR? - [X] Yes (please specify the tool below) Generated-by: Codex 0.147.0 (model: gpt-6) -- 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]
