Tzu-Li (Gordon) Tai created FLINK-6566:
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Summary: Narrow down interface for compatibility hook method in
VersionedIOReadableWritable
Key: FLINK-6566
URL: https://issues.apache.org/jira/browse/FLINK-6566
Project: Flink
Issue Type: Improvement
Components: Core, Type Serialization System
Reporter: Tzu-Li (Gordon) Tai
The {{VersionedIOReadableWritable}} provides a {{isCompatibleVersion}} method
that allows users to override to resolve older versions.
This method allows too much space for the user to mess up the implementation,
and is much more relevant now because we have an user-facing class
{{TypeSerializerConfigSnapshot}} which extends {{VersionedIOReadableWritable}}.
Instead of a {{isCompatibleVersion}} method, it should only expose a narrower
{{int[] getCompatibleVersions}} that the internal version check uses.
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