Github user aljoscha commented on the issue:
https://github.com/apache/flink/pull/3534
@StephanEwen you're right, this is problematic. The funny thing is, that
this actually works for Kryo. Having a serialiser without any registered
types/serializer works when the restoring serialiser does have registered
types/serializers. It does probably not work the other way round. I started
implementing the fixup, tests here:
https://github.com/aljoscha/flink/tree/jira-6018-state-init-fixups
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