Github user twalthr commented on a diff in the pull request:

    https://github.com/apache/flink/pull/6120#discussion_r203605524
  
    --- Diff: 
flink-streaming-java/src/main/java/org/apache/flink/streaming/api/datastream/KeyedStream.java
 ---
    @@ -545,15 +543,15 @@ public IntervalJoined(
     
                        TypeInformation<OUT> resultType = 
TypeExtractor.getBinaryOperatorReturnType(
                                cleanedUdf,
    -                           ProcessJoinFunction.class,    // 
ProcessJoinFunction<IN1, IN2, OUT>
    -                           0,     //                                       
    0    1    2
    +                           ProcessJoinFunction.class,
    +                           0,
                                1,
                                2,
    -                           TypeExtractor.NO_INDEX,         // output arg 
indices
    -                           left.getType(),                 // input 1 type 
information
    -                           right.getType(),                // input 2 type 
information
    -                           INTERVAL_JOIN_FUNC_NAME ,
    -                           false
    +                           TypeExtractor.NO_INDEX,
    +                           left.getType(),
    +                           right.getType(),
    +                           Utils.getCallLocationName(),
    +                           true
    --- End diff --
    
    Just saw that this should be false. Will correct that.


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