aokolnychyi commented on code in PR #38004:
URL: https://github.com/apache/spark/pull/38004#discussion_r981809103
##########
sql/catalyst/src/main/java/org/apache/spark/sql/connector/write/LogicalWriteInfo.java:
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@@ -45,4 +45,18 @@ public interface LogicalWriteInfo {
* the schema of the input data from Spark to data source.
*/
StructType schema();
+
+ /**
+ * the schema of the input metadata from Spark to data source.
+ */
+ default StructType metadataSchema() {
+ return null;
Review Comment:
I am open to discuss what value should indicate no row ID or metadata schema.
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