Hi, We are running Flink 1.7 and recently due to Kafka cluster migration, we need to find a way to modify kafka offset in FlinkKafkaConnector's state, and we found Flink 1.9's State Processor API is the exactly tool we need, we are able to modify the operator state via State Processor API, but when trying to resume App from the modified savepoint, we found it failed with ClassNotFoundException: *TupleSerializerSnapshot*, these *TypeSerializerSnapshots* are new in Flink 1.9 but not in 1.7, so I wonder if there has any suggestion or workaround to modify 1.7's state?
-- Thanks & Regards Zhao Kaihao
