[GitHub] [ignite-3] sanpwc commented on a change in pull request #645: IGNITE-16368 Implement a futures for causality tokens

[GitBox <gi...@apache.org>]

sanpwc commented on a change in pull request #645:
URL: https://github.com/apache/ignite-3/pull/645#discussion_r816017413



##########
File path: modules/core/src/main/java/org/apache/ignite/internal/causality/VersionedValue.java
##########
@@ -0,0 +1,370 @@
+/*
+ * 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.causality;
+
+import static java.util.concurrent.CompletableFuture.completedFuture;
+
+import java.util.Map.Entry;
+import java.util.concurrent.CancellationException;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.CompletionException;
+import java.util.concurrent.ConcurrentNavigableMap;
+import java.util.concurrent.ConcurrentSkipListMap;
+import java.util.concurrent.locks.ReadWriteLock;
+import java.util.concurrent.locks.ReentrantReadWriteLock;
+import java.util.function.BiConsumer;
+import java.util.function.Consumer;
+import java.util.function.Function;
+import java.util.function.Supplier;
+import org.apache.ignite.lang.IgniteStringFormatter;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+/**
+ * Parametrized type to store several versions of the value.
+ * A value can be available through the causality token, which is represented by long.
+ *
+ * @param <T> Type of real value.
+ */
+public class VersionedValue<T> {
+    /** Last applied casualty token. */

Review comment:
       Typo casualty -> causality




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