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From apivovarov <...@git.apache.org>
Subject [GitHub] flink pull request #2490: [FLINK-4609] Remove redundant check for null in Cr...
Date Sun, 11 Sep 2016 03:42:10 GMT
Github user apivovarov commented on a diff in the pull request:

    --- Diff: flink-java/src/main/java/org/apache/flink/api/java/operators/CrossOperator.java
    @@ -129,14 +129,11 @@ private String getDefaultName() {
     		public DefaultCross(DataSet<I1> input1, DataSet<I2> input2, CrossHint hint,
String defaultName) {
    -			super(input1, input2, new DefaultCrossFunction<I1, I2>(),
    +			super(Preconditions.checkNotNull(input1, "input1 is null"),
    --- End diff --
    DefaultCross calls `input1.getType()` and `input2.getType()` before calling super() on
line 134. So, if we add null check to super class (e.g. TwoInputOperator) it will not work
for DefaultCross

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