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java.lang.ClassCastException: class java.lang.Boolean cannot be cast to class java.lang.Number

We are leveraging flink-connector-clickhouse to read and write data to clickhouse from custom written DataStream Api KeyedCoProcessFunction. Implementation uses AbstractClickHouseOutputFormat builder ...
note

【Java Silver対策】if文の条件式はboolean型限定！

→ "true"という文字列を、String型の変数 valid に代入しています。