kylemeow opened a new pull request, #21123:
URL: https://github.com/apache/flink/pull/21123
## What is the purpose of the change
When non-deterministic functions (like `UUID()`) or some special metadata
fields (like `op_type`) are used in the source or sink fields, the
`SinkUpsertMaterializer` may fail to match the `-U` or `-D` record with
existing states, making the delete or retract record being erroneously dropped.
In this case, the error message in the log is misleading, as it only says it
is the statel ttl that caused this issue, which is untrue as user may have not
enabled state TTL at all.
## Brief change log
Enrich the error message to tell users more potential reasons.
## Verifying this change
This change is a trivial rework / code cleanup without any test coverage.
## 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: (yes / no / don't know) 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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