ClassCastException when using RowTypeInfo

[madan]

Hi,

Below is sample code I am trying with,

StreamExecutionEnvironment env = StreamExecutionEnvironment.
getExecutionEnvironment();


TypeInformation[] types = new TypeInformation[]
{BasicTypeInfo.INT_TYPE_INFO, BasicTypeInfo.STRING_TYPE_INFO,
        BasicTypeInfo.DOUBLE_TYPE_INFO, BasicTypeInfo.STRING_TYPE_INFO};

String[] fieldNames = new String[]{"id", "name", "salary", "department"};
RowTypeInfo rowTypeInfo = new RowTypeInfo(types, fieldNames);
env.registerType(RowTypeInfo.class);

env.addSource(new EmployeeSourceFunction(), "samplesource", rowTypeInfo)
        .keyBy("department").sum("salary").addSink(new PrintSinkFunction<>());


public class EmployeeSourceFunction implements SourceFunction<Row> {
    private boolean continueRead = true;

    @Override
    public void run(SourceContext<Row> ctx) throws Exception {
        while (continueRead) {
            for (int i = 0; i < 3 && continueRead; i++) {
                Row row = new Row(4);
                row.setField(0, Integer.valueOf(i));
                row.setField(1, String.valueOf("user" + i));
                row.setField(2, 1000 * i);
                row.setField(3, "DEV");
                ctx.collect(row);
            }
            continueRead = false;
        }
    }

    @Override
    public void cancel() {
        continueRead = false;
    }
}


And I am getting below exception

java.lang.ClassCastException:
org.apache.flink.api.java.typeutils.RowTypeInfo cannot be cast to
org.apache.flink.api.java.typeutils.TupleTypeInfo
at
org.apache.flink.streaming.util.typeutils.FieldAccessorFactory.getAccessor(FieldAccessorFactory.java:167)


I have checked FieldAccessorFactory.java:167,

if (typeInfo.isTupleType()) {
   TupleTypeInfo tupleTypeInfo = (TupleTypeInfo) typeInfo;

RowTypeInfo returns 'true' for isTupleType() and cannot be casted.


Can someone please tell me, Is it that I have done wrong configuration or
bug in code ?


-- 
Thank you,
Madan.