yihua commented on code in PR #13711:
URL: https://github.com/apache/hudi/pull/13711#discussion_r2359581074


##########
hudi-common/src/main/java/org/apache/hudi/avro/AvroSchemaUtils.java:
##########
@@ -423,22 +428,24 @@ private static Schema pruneDataSchemaInternal(Schema 
dataSchema, Schema required
         }
         List<Schema.Field> newFields = new ArrayList<>();
         for (Schema.Field requiredSchemaField : requiredSchema.getFields()) {
-          Schema.Field dataSchemaField = 
dataSchema.getField(requiredSchemaField.name());
-          if (dataSchemaField != null) {
-            Schema.Field newField = new Schema.Field(
-                dataSchemaField.name(),
-                pruneDataSchema(dataSchemaField.schema(), 
requiredSchemaField.schema(), Collections.emptySet()),
-                dataSchemaField.doc(),
-                dataSchemaField.defaultVal()
-            );
-            newFields.add(newField);
-          } else if (mandatoryFields.contains(requiredSchemaField.name())) {
+          if (mandatoryFields.contains(requiredSchemaField.name())) {

Review Comment:
   Got it.  This might be a bug around timestamp partition column.



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