[jira] [Created] (FLINK-8364) ListState should return empty iterator rather than null when it has no value

[Bowen Li (JIRA)]

Bowen Li created FLINK-8364:
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             Summary: ListState should return empty iterator rather than null 
when it has no value
                 Key: FLINK-8364
                 URL: https://issues.apache.org/jira/browse/FLINK-8364
             Project: Flink
          Issue Type: Improvement
          Components: State Backends, Checkpointing
    Affects Versions: 1.4.0
            Reporter: Bowen Li
            Assignee: Bowen Li
             Fix For: 1.5.0


per discussion with [~stefanrichte...@gmail.com] in 
https://github.com/apache/flink/pull/4963, we decide to have {{ListState#get}} 
return empty iterator if it has no value in it.





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