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  1. Flink
  2. FLINK-23018

State factories should handle extended state descriptors

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      Currently, TtlStateFactory and other state factories can only handle fixed type of state descriptors. As ValueStateDescriptor is not a final class and user could still extend it, however, TtlStateFactory cannot recognize the extending class.

      TtlStateFactory should use StateDescriptor#Type to check what kind of state is.

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            yunta Yun Tang
            yunta Yun Tang
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