HuangZhenQiu commented on code in PR #24618:
URL: https://github.com/apache/flink/pull/24618#discussion_r1583447345
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flink-streaming-java/src/main/java/org/apache/flink/streaming/api/transformations/OneInputTransformation.java:
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@@ -42,7 +42,7 @@
* @param <OUT> The type of the elements that result from this {@code
OneInputTransformation}
*/
@Internal
-public class OneInputTransformation<IN, OUT> extends
PhysicalTransformation<OUT> {
+public class OneInputTransformation<IN, OUT> extends
TransformationWithLineage<OUT> {
Review Comment:
MultipleInputTransformation, KeyedMultipleInputTransformation,
TwoInputTransformation are internal transformations. They will be useful for
propagate the column level lineage info. But It is not in the scope of this PR.
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