hadoop IndexedSortable 源码
haddop IndexedSortable 代码
文件路径：/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/IndexedSortable.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.util;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
/**
* Interface for collections capable of being sorted by {@link IndexedSorter}
* algorithms.
*/
@InterfaceAudience.LimitedPrivate({"MapReduce"})
@InterfaceStability.Unstable
public interface IndexedSortable {
/**
* Compare items at the given addresses consistent with the semantics of
* {@link java.util.Comparator#compare(Object, Object)}.
*
* @param i(int).
* @param j(int).
* @return compare result.
*/
int compare(int i, int j);
/**
* Swap items at the given addresses.
*
* @param i i(int).
* @param j j(int).
*/
void swap(int i, int j);
}
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