Status

Current state: Under Discussion

Discussion thread:

Vote thread: https://lists.apache.org/thread/0bh530j5ob11lzj48vpm883sqwgmstp8

JIRA: https://issues.apache.org/jira/browse/FLINK-29844

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TypeSerializerSnapshot still owns the responsibility of resolving schema compatibility, TypeSerializer could just pay attention to its serialization and deserialization as before.
It's very convenient to implement it based on current implementation by all information in TypeSerializerSnapshot and tools which is also helpful for users to migrate their external serializer.

Introduce a method without default implementation

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