SteNicholas opened a new pull request #13813:
URL: https://github.com/apache/flink/pull/13813
## What is the purpose of the change
*Currently Flink can only handle schemas up to a size of 65535 bytes, and
`AvroSerializerSnapshot` cannot handle large schema. If size of schame exceed
65535 bytes, the `UTFDataFormatException` could be thrown.
`AvroSerializerSnapshot` should introduce a V3 that uses
`StringValue.writeString()` and `StringValue.readString()` to handle the string
encoding.*
## Brief change log
- *`AvroSerializerSnapshot` introduces a V3 that uses
`StringValue.writeString()` in `writeSnapshot()` and `StringValue.readString()`
in `readSnapshot()`.*
## Verifying this change
- *`AvroSerializerSnapshotTest` adds the test method
`largeSchemaWithExceedV2ThresholdSizeShouldResultInCompatibleV3Serializer` to
verify the test case whether the large schema which exceeds a threshold size of
65535 bytes is compatible with the new version 3 of `AvroSerializerSnapshot`.*
## Does this pull request potentially affect one of the following parts:
- Dependencies (does it add or upgrade a dependency): (yes / **no**)
- The public API, i.e., is any changed class annotated with
`@Public(Evolving)`: (yes / **no**)
- The serializers: (yes / **no** / don't know)
- The runtime per-record code paths (performance sensitive): (yes / **no**
/ don't know)
- Anything that affects deployment or recovery: JobManager (and its
components), Checkpointing, Kubernetes/Yarn/Mesos, ZooKeeper: (yes / **no** /
don't know)
- The S3 file system connector: (yes / **no** / don't know)
## Documentation
- Does this pull request introduce a new feature? (yes / **no**)
- If yes, how is the feature documented? (**not applicable** / docs /
JavaDocs / not documented)
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