fredia commented on code in PR #24653: URL: https://github.com/apache/flink/pull/24653#discussion_r1582048401
########## flink-runtime/src/main/java/org/apache/flink/runtime/checkpoint/channel/UnifyMergingChannelStateWriteRequestDispatcher.java: ########## @@ -0,0 +1,63 @@ +/* + * 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.api.common.JobID; +import org.apache.flink.runtime.state.CheckpointStorage; +import org.apache.flink.runtime.state.CheckpointStorageAccess; + +import static org.apache.flink.util.Preconditions.checkState; + +/** + * An implementation of {@link ChannelStateWriteRequestDispatcher} which construct a build a {@link + * ChannelStateCheckpointWriter} that uses unified file merging mechanism to write channel state. + */ +class UnifyMergingChannelStateWriteRequestDispatcher + extends ChannelStateWriteRequestDispatcherImpl { + + private final CheckpointStorageAccess checkpointStorageAccess; + + UnifyMergingChannelStateWriteRequestDispatcher( + CheckpointStorage checkpointStorage, + CheckpointStorageAccess checkpointStorageAccess, + JobID jobID, + ChannelStateSerializer serializer) { + super(checkpointStorage, jobID, serializer); + this.checkpointStorageAccess = checkpointStorageAccess; + } + + @Override + protected ChannelStateCheckpointWriter buildWriter(CheckpointStartRequest request) + throws Exception { + return new ChannelStateCheckpointWriter( + registeredSubtasks, + request.getCheckpointId(), + // checkpointStorageAccess provides unified file merging mechanism + checkpointStorageAccess.resolveCheckpointStorageLocation( + request.getCheckpointId(), request.getLocationReference()), Review Comment: > The only difference between `UnifyMergingChannelStateWriteRequestDispatcher` and `ChannelStateWriteRequestDispatcherImpl` is how to `resolveCheckpointStorageLocation`, right? Yes, it is. Good suggestion, I'll replace `checkpointStorage` with `checkpointStorageAccess` in `ChannelStateWriteRequestDispatcherImpl`. -- 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: issues-unsubscr...@flink.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
