viirya commented on a change in pull request #31476: URL: https://github.com/apache/spark/pull/31476#discussion_r572414083
########## File path: sql/catalyst/src/main/java/org/apache/spark/sql/connector/read/Scan.java ########## @@ -102,4 +102,13 @@ default MicroBatchStream toMicroBatchStream(String checkpointLocation) { default ContinuousStream toContinuousStream(String checkpointLocation) { throw new UnsupportedOperationException(description() + ": Continuous scan are not supported"); } + + /** + * Returns an array of supported custom metrics with name and description. + * By default it returns empty array. + */ + default CustomMetric[] supportedCustomMetrics() { Review comment: cc @dongjoon-hyun Does it convincing for you? ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org