the-other-tim-brown commented on code in PR #8574:
URL: https://github.com/apache/hudi/pull/8574#discussion_r1191508388
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hudi-utilities/src/main/java/org/apache/hudi/utilities/transform/Transformer.java:
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@@ -45,4 +47,9 @@ public interface Transformer {
*/
@PublicAPIMethod(maturity = ApiMaturityLevel.STABLE)
Dataset<Row> apply(JavaSparkContext jsc, SparkSession sparkSession,
Dataset<Row> rowDataset, TypedProperties properties);
+
+ @PublicAPIMethod(maturity = ApiMaturityLevel.EVOLVING)
+ default Option<Schema> transformedSchema(JavaSparkContext jsc, SparkSession
sparkSession, Schema incomingSchema, TypedProperties properties) {
+ return Option.empty();
Review Comment:
I think this puts a large burden on the user to implement these schemas when
there is an easier way to get a signal as to whether the combination of
transformers is valid.
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