Stefan Richter created FLINK-10839:
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Summary: Fix implementation of PojoSerializer.duplicate() w.r.t.
subclass serializer
Key: FLINK-10839
URL: https://issues.apache.org/jira/browse/FLINK-10839
Project: Flink
Issue Type: Bug
Components: Type Serialization System
Reporter: Stefan Richter
Assignee: Stefan Richter
Fix For: 1.6.3, 1.7.0
The implementation of {{PojoSerializer.duplicate()}} currently ignores that
subclassSerializerCache is a shared resource. We must always return a new
instance of the serializer, even if all the nested field serializers are not
stateful or else concurrency problems might occur if we have cached subclass
serializers.
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