anton-vinogradov commented on code in PR #10028: URL: https://github.com/apache/ignite/pull/10028#discussion_r886670203
########## modules/core/src/main/java/org/apache/ignite/internal/pagemem/wal/record/ConsistentCutStartRecord.java: ########## @@ -0,0 +1,94 @@ +/* + * 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.ignite.internal.pagemem.wal.record; + +import java.util.List; +import java.util.Set; +import java.util.stream.Collectors; +import org.apache.ignite.internal.processors.cache.version.GridCacheVersion; +import org.apache.ignite.lang.IgniteUuid; + +/** + * Consistent Cut splits timeline on 2 global areas - BEFORE and AFTER. It guarantees that every transaction committed BEFORE + * also will be committed BEFORE on every other node. It means that an Ignite node can safely recover itself to this + * point without any coordination with other nodes. + * + * This record is written to WAL in moment when Consistent Cut starts on a local node. All transactions committed before + * this WAL record are part of the global area BEFORE. But it's possible then some transactions committed after this + * record are also part of the BEFORE state. Set of such transactions is prepared in moment of taken Consistent Cut. + * Ignite analyzes such transactions and decided whether to include them to the state or not. Information about that is + * written to WAL with {@link ConsistentCutFinishRecord}. + * + * @see ConsistentCutFinishRecord + */ +public class ConsistentCutStartRecord extends WALRecord { + /** + * Consistent Cut Version. It's timestamp of start Consistent Cut on the Ignite coordinator node. + */ + private final long ver; + + /** + * Set of transactions (committed AFTER this record) to include to the Consistent Cut State. + */ + private final Set<GridCacheVersion> include; + + /** + * Set of transactions (committed AFTER this record) to check whether they are part of the Consistent Cut State. + */ + private final Set<GridCacheVersion> check; Review Comment: None on these collections are required. All additional data is provided by finish message. -- 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]
