hadoop LRUCacheHashMap 源码
haddop LRUCacheHashMap 代码
文件路径：/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/util/LRUCacheHashMap.java
/**
* 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.hadoop.yarn.util;
import java.util.LinkedHashMap;
import java.util.Map;
/**
* LRU cache with a configurable maximum cache size and access order.
*/
public class LRUCacheHashMap<K, V> extends LinkedHashMap<K, V> {
private static final long serialVersionUID = 1L;
// Maximum size of the cache
private int maxSize;
/**
* Constructor.
*
* @param maxSize max size of the cache
* @param accessOrder true for access-order, false for insertion-order
*/
public LRUCacheHashMap(int maxSize, boolean accessOrder) {
super(maxSize, 0.75f, accessOrder);
this.maxSize = maxSize;
}
@Override
protected boolean removeEldestEntry(Map.Entry<K, V> eldest) {
return size() > maxSize;
}
}
相关信息
相关文章
hadoop AbstractLivelinessMonitor 源码
hadoop ApplicationClassLoader 源码
0
赞
热门推荐
-
2、 - 优质文章
-
3、 gate.io
-
7、 golang
-
9、 openharmony
-
10、 Vue中input框自动聚焦