Weijie Guo created FLINK-32275:
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Summary: The return value of PartitionableListState#get is
inconsistent with the requirements of AppendingState
Key: FLINK-32275
URL: https://issues.apache.org/jira/browse/FLINK-32275
Project: Flink
Issue Type: Technical Debt
Reporter: Weijie Guo
The java doc of {{AppendingState#get()}} states that if the state is empty,
then this method should return {{null}}. But for it's child class
{{PartitionableListState}}, It does return a empty list instead of {{null}}.
This has caused some confusion ,especially {{AppendingState}} is a
{{PublicEvolving}} API.
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