Ngone51 commented on a change in pull request #32232:
URL: https://github.com/apache/spark/pull/32232#discussion_r617342481
##########
File path:
core/src/main/scala/org/apache/spark/util/collection/WritablePartitionedPairCollection.scala
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@@ -94,3 +83,20 @@ private[spark] trait WritablePartitionedIterator {
def nextPartition(): Int
}
+
+/**
+ * Default implementation of `WritablePartitionedIterator`.
+ */
+private[spark] class DefaultWritablePartitionedIterator[K, V](it:
Iterator[((Int, K), V)])
Review comment:
I think we can just turn the trait into the class if there's only one
implementation now.
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