akalash commented on a change in pull request #18341: URL: https://github.com/apache/flink/pull/18341#discussion_r787004952
########## File path: flink-core/src/main/java/org/apache/flink/core/fs/DuplicatingFileSystem.java ########## @@ -0,0 +1,74 @@ +/* + * 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.flink.core.fs; + +import java.io.IOException; +import java.util.List; + +/** + * An extension interface for {@link FileSystem FileSystems} that can perform cheap DFS side + * duplicate operation. Such an operation can improve the time required for creating cheaply + * independent snapshots from incremental snapshots. + */ +public interface DuplicatingFileSystem { Review comment: My question was how does this interface will be used. I thought that we are using FileSystem implementation from a third-party library but now I understand we have our own implementation as well so it should not be a problem to expand the such implementation with this interface. -- 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]
