[GitHub] [hadoop] goiri commented on a diff in pull request #5609: YARN-11470. FederationStateStoreFacade Cache Support Guava Cache.

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

goiri commented on code in PR #5609:
URL: https://github.com/apache/hadoop/pull/5609#discussion_r1181719617


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hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-common/src/main/java/org/apache/hadoop/yarn/server/federation/cache/FederationGuavaCache.java:
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@@ -0,0 +1,117 @@
+/**
+ * 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
+ * <p>
+ * http://www.apache.org/licenses/LICENSE-2.0
+ * <p>
+ * 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.hadoop.yarn.server.federation.cache;
+
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.thirdparty.com.google.common.cache.Cache;

Review Comment:
   There was pushback in the past using guava.
   I guess that this is an optional setting so might not be too bad.



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