[GitHub] [flink] huwh commented on a diff in pull request #22305: [FLINK-31443][runtime] Maintain redundant taskmanagers to speed up failover

["huwh (via GitHub)" <gi...@apache.org>]

huwh commented on code in PR #22305:
URL: https://github.com/apache/flink/pull/22305#discussion_r1159241282


##########
flink-runtime/src/main/java/org/apache/flink/runtime/resourcemanager/slotmanager/RequiredRedundantResource.java:
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@@ -0,0 +1,55 @@
+/*
+ * 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.resourcemanager.slotmanager;
+
+import org.apache.flink.api.common.resources.CPUResource;
+import org.apache.flink.configuration.MemorySize;
+import org.apache.flink.util.Preconditions;
+
+/** Immutable profile of the required redundant resources. */
+public final class RequiredRedundantResource {
+    private final CPUResource cpuResource;
+    private final MemorySize memorySize;
+
+    public RequiredRedundantResource(CPUResource cpuResource, MemorySize memorySize) {
+        this.cpuResource = Preconditions.checkNotNull(cpuResource);
+        this.memorySize = Preconditions.checkNotNull(memorySize);

Review Comment:
   Good suggestion.
   
   It makes more sense to consider subdivision resource from a semantic point of view.
   
   Then I don't need to introduce a new RequiredRedundantResource to manage the use of redundant resources. Instead, using ResourceProfile is sufficient
   
   Looking forward to your opinion as well @xintongsong 



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