Au-Miner opened a new pull request, #27992:
URL: https://github.com/apache/flink/pull/27992
## What is the purpose of the change
Fix Memory Leak Issue in Flink SQL with Multiple Temporal Joins.
## Brief change log
- Clean up per-key bookkeeping (nextLeftIndex, registeredTimer) when both
probe and build sides are fully drained for a key, preventing unbounded state
growth in jobs without idle-state retention.
- Remove tombstoned (DELETE/UPDATE_BEFORE) versioned rows from rightState
during watermark-driven cleanup, allowing the state backend to fully reclaim
per-key entries for deleted versioned rows.
## Verifying this change
This change is verified by new and existing tests in
`TemporalRowTimeJoinOperatorTest#testPerKeyStateIsCleanedUpWithoutStateRetention`.
## Does this pull request potentially affect one of the following parts:
- Dependencies (does it add or upgrade a dependency): no
- The public API, i.e., is any changed class annotated with
`@Public(Evolving)`: no
- The serializers: no
- The runtime per-record code paths (performance sensitive): no
- Anything that affects deployment or recovery: JobManager (and its
components), Checkpointing, Kubernetes/Yarn, ZooKeeper: no
- The S3 file system connector: no
## Documentation
- Does this pull request introduce a new feature? no
- If yes, how is the feature documented? not applicable
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