Github user fhueske commented on a diff in the pull request:
https://github.com/apache/flink/pull/1838#discussion_r60395484
--- Diff:
flink-tests/src/test/java/org/apache/flink/test/javaApiOperators/CoGroupITCase.java
---
@@ -301,6 +309,51 @@ public void
testCoGroupWithMultipleKeyFieldsWithFieldSelector() throws Exception
}
@Test
+ public void testCoGroupWithMultipleKeyFieldsWithFieldSelector2() throws
Exception {
+ /*
+ * UDF Join on tuples with multiple key field positions and
same customized distribution
+ */
+
+ final ExecutionEnvironment env =
ExecutionEnvironment.getExecutionEnvironment();
+
+ DataSet<Tuple5<Integer, Long, Integer, String, Integer>> ds1 =
CollectionDataSets.get5TupleDataSet(env)
+ .map(new MapFunction<Tuple5<Integer, Long,
Integer, String, Long>, Tuple5<Integer, Long, Integer, String, Integer>>() {
--- End diff --
Can you keep the original data type, i.e., not convert the last field to
Integer?
1) It will check if the range partitioning handles different types.
2) it will be more concise (no map functions + no additional
CoGroupFunction).
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