stevenzwu commented on a change in pull request #15924: URL: https://github.com/apache/flink/pull/15924#discussion_r641283847
########## File path: flink-connectors/flink-connector-base/src/main/java/org/apache/flink/connector/base/source/hybrid/SourceReaderFinishedEvent.java ########## @@ -0,0 +1,60 @@ +/* + * 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.connector.base.source.hybrid; + +import org.apache.flink.api.connector.source.SourceEvent; + +/** + * A source event sent from the HybridSourceReader to the enumerator to indicate that the current + * reader has finished and splits for the next reader can be sent. + */ +public class SourceReaderFinishedEvent implements SourceEvent { + + private static final long serialVersionUID = 1L; + private final int sourceIndex; + private final long checkpointId; + + /** + * Constructor. + * + * @param sourceIndex + */ + public SourceReaderFinishedEvent(int sourceIndex, long checkpointId) { + this.sourceIndex = sourceIndex; + this.checkpointId = checkpointId; + } + + public int sourceIndex() { + return sourceIndex; + } + + public long getCheckpointId() { Review comment: it seems that `checkpointId` is not used in the code. Do you have plan to use `checkpointId` in the future? if not, we probably can remove all the checkpointId related code in the HybridSourceReader class -- 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. For queries about this service, please contact Infrastructure at: us...@infra.apache.org
