aokolnychyi commented on a change in pull request #33008: URL: https://github.com/apache/spark/pull/33008#discussion_r660093569
########## File path: sql/catalyst/src/main/java/org/apache/spark/sql/connector/write/SupportsDelta.java ########## @@ -0,0 +1,35 @@ +/* + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +package org.apache.spark.sql.connector.write; + +import org.apache.spark.annotation.Experimental; +import org.apache.spark.sql.connector.expressions.NamedReference; + +/** + * A mix-in interface for {@link RowLevelOperation}. Data sources can implement this interface + * to indicate they support handling deltas of rows. + * + * @since 3.2.0 + */ +@Experimental +public interface SupportsDelta extends RowLevelOperation { Review comment: We assume the default `RowLevelOperation` only supports replacing groups as it is more common and requires less from data sources. For example, regular Hive tables in Spark would be able to easily support group-based rewrites (i.e. partition-level granularity). -- 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. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
