spark SessionConfigSupport 源码
spark SessionConfigSupport 代码
文件路径：/sql/catalyst/src/main/java/org/apache/spark/sql/connector/catalog/SessionConfigSupport.java
/*
* 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.catalog;
import org.apache.spark.annotation.Evolving;
/**
* A mix-in interface for {@link TableProvider}. Data sources can implement this interface to
* propagate session configs with the specified key-prefix to all data source operations in this
* session.
*
* @since 3.0.0
*/
@Evolving
public interface SessionConfigSupport extends TableProvider {
/**
* Key prefix of the session configs to propagate, which is usually the data source name. Spark
* will extract all session configs that starts with `spark.datasource.$keyPrefix`, turn
* `spark.datasource.$keyPrefix.xxx -> yyy` into `xxx -> yyy`, and propagate them to all
* data source operations in this session.
*/
String keyPrefix();
}
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