anton-vinogradov commented on a change in pull request #8909: URL: https://github.com/apache/ignite/pull/8909#discussion_r644602120
########## File path: modules/core/src/main/java/org/apache/ignite/cache/CacheEntryVersion.java ########## @@ -0,0 +1,69 @@ +/* + * 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.cache; + +import java.io.Serializable; +import java.util.Map; +import org.apache.ignite.internal.processors.cache.CacheConflictResolutionManager; +import org.apache.ignite.internal.processors.cache.IgniteInternalCache; +import org.apache.ignite.internal.processors.cache.version.GridCacheVersionManager; +import org.apache.ignite.lang.IgniteExperimental; + +/** + * Entry event order. + * Two concurrent updates of the same entry can be ordered based on {@link CacheEntryVersion} comparsion. + * Greater value means that event occurs later. + * + * @see CacheConflictResolutionManager + * @see GridCacheVersionManager#dataCenterId() + * @see GridCacheVersionManager#dataCenterId(byte) + */ +@IgniteExperimental +public interface CacheEntryVersion extends Comparable<CacheEntryVersion>, Serializable { + /** @return Topology version plus number of seconds from the start time of the first grid node. */ + public int topologyVersion(); + + /** @return Node order on which this version was assigned. */ + public int nodeOrder(); + + /** + * Data center id is a value to distinguish updates in case user wants to aggregate and sort updates from several + * Ignite clusters. {@code dataCenterId} id can be set for the node using + * {@link GridCacheVersionManager#dataCenterId(byte)}. + * + * @return Data center id. + */ + public byte dataCenterId(); + + /** + * Order of the entry update. + * Value is an incremental counter value. + * + * @return Version order. + */ + public long order(); Review comment: It looks to be a nodeOrder, could you please clarify this. Update: Seems to be correct -- 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: [email protected]
