1996fanrui commented on code in PR #28554: URL: https://github.com/apache/flink/pull/28554#discussion_r3486029637
########## flink-runtime/src/main/java/org/apache/flink/runtime/checkpoint/channel/RecoveryCheckpointTrigger.java: ########## @@ -0,0 +1,45 @@ +/* + * 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.runtime.checkpoint.channel; + +import org.apache.flink.annotation.Internal; + +import java.io.IOException; + +@Internal +public interface RecoveryCheckpointTrigger { + + /** + * Atomically snapshots the undrained spill slice and inserts matching {@link + * RecoveryCheckpointBarrier}s into in-recovery channels. Returns an independent reader over the + * remaining segments; the caller owns and must close it. + */ + FetchedChannelStateReader snapshotAndInsertBarriers(long checkpointId) throws IOException; + + /** Returns an empty reader (no spill files, so no segments) and inserts no barriers. */ + RecoveryCheckpointTrigger NO_OP = checkpointId -> FetchedChannelStateReader.emptyReader(); + + RecoveryCheckpointTrigger NOT_READY = + ign -> { + throw new IllegalStateException("RecoveryCheckpointTrigger is not ready yet"); + }; + RecoveryCheckpointTrigger FAILING = Review Comment: No usage -- 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]
