Github user hustfxj commented on the issue: https://github.com/apache/flink/pull/4111 @sunjincheng121 Thank you for the Fix. Maybe it had better remove the followed codes at the Func **generateFieldAccess**. ``` val fieldIndex = if (ct.isInstanceOf[PojoTypeInfo[_]]) { fieldMapping(index) } ``` And this bug was import by [FLINK-5884], due to the judgment **input1Mapping** contains the field index or not at the Func **generateConverterResultExpression&generateCorrelateAccessExprs**.
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