[jira] [Created] (FLINK-11329) Migrate all remaining composite serializers to use new serializer snapshot abstraction

[Shang Yuanchun (Jira)]

Tzu-Li (Gordon) Tai created FLINK-11329:
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             Summary: Migrate all remaining composite serializers to use new serializer snapshot abstraction
                 Key: FLINK-11329
                 URL: https://issues.apache.org/jira/browse/FLINK-11329
             Project: Flink
          Issue Type: Sub-task
          Components: State Backends, Checkpointing, Type Serialization System
            Reporter: Tzu-Li (Gordon) Tai
            Assignee: Tzu-Li (Gordon) Tai
             Fix For: 1.8.0


This subtask covers migration of:
* StreamElementSerializerConfigSnapshot
* NFASerializerConfigSnapshot
* NullableSerializerConfigSnapshot
* UnionSerializerConfigSnapshot
* TwoPhaseCommitSinkFunction.StateSerializerConfigSnapshot
* TimerSerializerConfigSnapshot
* SharedBufferSerializerConfigSnapshot
* RowSerializerConfigSnapshot
* CompositeSerializer.ConfigSnapshot
* BufferSerializerConfigSnapshot
* ScalaOptionSerializerConfigSnapshot
* ScalaTrySerializerConfigSnapshot
* TrySerializerConfigSnapshot
* OptionSerializerConfigSnapshot
* CollectionSerializerConfigSnapshot
* CRowSerializerConfigSnapshot
to use the new serialization compatibility APIs ({{TypeSerializerSnapshot}} and {{TypeSerializerSchemaCompatibility).

They should use the higher-level {{CompositeTypeSerializerSnapshot}} which handles nested serializer compatibility checks.

Serializers are only considered to have completed migration according to the defined list of things to check in FLINK-11327.



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