hadoop Range 源码
haddop Range 代码
文件路径：/hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-timelineservice-hbase/hadoop-yarn-server-timelineservice-hbase-common/src/main/java/org/apache/hadoop/yarn/server/timelineservice/storage/common/Range.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.server.timelineservice.storage.common;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
/**
* Encapsulates a range with start and end indices.
*/
@InterfaceAudience.Private
@InterfaceStability.Unstable
public class Range {
private final int startIdx;
private final int endIdx;
/**
* Defines a range from start index (inclusive) to end index (exclusive).
*
* @param start
* Starting index position
* @param end
* Ending index position (exclusive)
*/
public Range(int start, int end) {
if (start < 0 || end < start) {
throw new IllegalArgumentException(
"Invalid range, required that: 0 <= start <= end; start=" + start
+ ", end=" + end);
}
this.startIdx = start;
this.endIdx = end;
}
public int start() {
return startIdx;
}
public int end() {
return endIdx;
}
public int length() {
return endIdx - startIdx;
}
}
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