JingsongLi commented on a change in pull request #12923:
URL: https://github.com/apache/flink/pull/12923#discussion_r458505381
##########
File path: flink-core/src/main/java/org/apache/flink/util/CollectionUtil.java
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@@ -99,4 +100,18 @@ public static boolean isNullOrEmpty(Map<?, ?> map) {
iterable.iterator().forEachRemaining(list::add);
return list;
}
+
+ /**
+ * Collects the elements in the Iterator in a List. If the iterator
argument is null,
+ * this method returns an empty list.
+ */
+ public static <E> List<E> iteratorToList(@Nullable Iterator<E>
iterator) {
Review comment:
According to `IteratorUtils.toList`, if iterator is null, should throw
NPE. I think it is good to be consistent with commons-collections.
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