twalthr opened a new pull request #14035:
URL: https://github.com/apache/flink/pull/14035
## What is the purpose of the change
The `RowDataSerializer.copy()` method did not consider `NestedRowData` which
led to
inconsistent `MapState` when using a heap state backend. This caused
`AggregateITCase.testListAggWithDistinct`
to be unstable when performing a distinct using map views.
## Brief change log
- Fix RowDataSerializer#copy
## Verifying this change
This change added tests and can be verified as follows:
- Run AggregateITCase.testListAggWithDistinct ~2000 times with HEAP and all
modes ON
- Dedicated RowDataSerializerTest
## 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
- The runtime per-record code paths (performance sensitive): yes
- Anything that affects deployment or recovery: JobManager (and its
components), Checkpointing, Kubernetes/Yarn/Mesos, 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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