lincoln-lil opened a new pull request, #24152:
URL: https://github.com/apache/flink/pull/24152
## What is the purpose of the change
KeyedLookupJoinWrapper(when
'table.optimizer.non-deterministic-update.strategy
' is set to 'TRY_RESOLVE' and the lookup join exists NDU problemns)
incorrectly process delete message for inner join when previous lookup result
is empty.
The reason is unaligned processing between retract (which access local
state) and add (which do fetch via lookup function ) logic.
## Brief change log
* sync the retract and add process logic
* update related tests
## Verifying this change
* KeyedLookupJoinHarnessTest
## 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)
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