xushiyan commented on a change in pull request #1440: [HUDI-731] Add
ChainedTransformer
URL: https://github.com/apache/incubator-hudi/pull/1440#discussion_r396894929
##########
File path:
hudi-utilities/src/main/java/org/apache/hudi/utilities/transform/ChainedTransformer.java
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@@ -0,0 +1,30 @@
+package org.apache.hudi.utilities.transform;
+
+import org.apache.hudi.common.util.TypedProperties;
+
+import org.apache.spark.api.java.JavaSparkContext;
+import org.apache.spark.sql.Dataset;
+import org.apache.spark.sql.Row;
+import org.apache.spark.sql.SparkSession;
+
+import java.util.List;
+import java.util.function.Supplier;
+
+/**
+ * An abstract {@link Transformer} to chain other {@link Transformer}s and
apply sequentially.
+ * <p>
+ * A subclass is to supply a {@link List} of {@link Transformer}s in desired
sequence.
+ */
+public abstract class ChainedTransformer implements Transformer {
Review comment:
will do the docs change once this approved. thanks.
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