cshuo commented on code in PR #13163:
URL: https://github.com/apache/hudi/pull/13163#discussion_r2049810358


##########
hudi-flink-datasource/hudi-flink/src/test/java/org/apache/hudi/sink/utils/ScalaCollector.java:
##########
@@ -20,27 +20,35 @@
 
 import org.apache.flink.util.Collector;
 
+import java.util.ArrayList;
+import java.util.List;
+
 /**
  * A mock {@link Collector} that used in  {@link TestFunctionWrapper}.
  */
 class ScalaCollector<T> implements Collector<T> {

Review Comment:
   `Scalar`? ok, then we should rename it if multiple emitted records is 
expected.



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