Rui Fan created FLINK-32658:
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             Summary: State should not be silently removed when 
ignore-unclaimed-state is false
                 Key: FLINK-32658
                 URL: https://issues.apache.org/jira/browse/FLINK-32658
             Project: Flink
          Issue Type: Bug
          Components: Runtime / Checkpointing
    Affects Versions: 1.17.1, 1.18.0
            Reporter: Rui Fan
            Assignee: Rui Fan


When ignore-unclaimed-state is false and the old state is removed, flink should 
throw exception.

It's similar with removing an stateful operator.

This case occurs not only when the user removes state, but also when the 
operator is replaced. 

For example: upgrade FlinkKafkaConsumer to KafkaSource. All logical are not 
changed, so the operator id isn't changed. The KafkaSource cannot resume from 
the state of FlinkKafkaConsumer. However, flink job can start, and the state is 
silently discarded.




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