Github user apivovarov commented on a diff in the pull request:
https://github.com/apache/flink/pull/2490#discussion_r78283317
--- Diff:
flink-java/src/main/java/org/apache/flink/api/java/operators/CrossOperator.java
---
@@ -133,10 +133,6 @@ public DefaultCross(DataSet<I1> input1, DataSet<I2>
input2, CrossHint hint, Stri
new TupleTypeInfo<Tuple2<I1,
I2>>(input1.getType(), input2.getType()),
hint, defaultName);
- if (input1 == null || input2 == null) {
- throw new NullPointerException();
- }
-
--- End diff --
if input1 or/and input2 are null CrossOperator will throw NPE on line 133
I also added check for null to TwoInputOperator
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