1 /**
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
17 */
18
19 package org.apache.hadoop.metrics2.util;
20
21 import org.apache.hadoop.hbase.classification.InterfaceAudience;
22
23 /**
24 * Specifies a quantile (with error bounds) to be watched by a
25 * {@link MetricSampleQuantiles} object.
26 */
27 @InterfaceAudience.Private
28 public class MetricQuantile {
29 public final double quantile;
30 public final double error;
31
32 public MetricQuantile(double quantile, double error) {
33 this.quantile = quantile;
34 this.error = error;
35 }
36
37 @Override
38 public boolean equals(Object aThat) {
39 if (this == aThat) {
40 return true;
41 }
42 if (!(aThat instanceof MetricQuantile)) {
43 return false;
44 }
45
46 MetricQuantile that = (MetricQuantile) aThat;
47
48 long qbits = Double.doubleToLongBits(quantile);
49 long ebits = Double.doubleToLongBits(error);
50
51 return qbits == Double.doubleToLongBits(that.quantile)
52 && ebits == Double.doubleToLongBits(that.error);
53 }
54
55 @Override
56 public int hashCode() {
57 return (int) (Double.doubleToLongBits(quantile) ^ Double
58 .doubleToLongBits(error));
59 }
60 }