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.lib;
20
21 import org.apache.hadoop.hbase.classification.InterfaceAudience;
22 import org.apache.hadoop.metrics2.MetricsInfo;
23
24 /**
25 * Extended histogram implementation with counters for metric size ranges.
26 */
27 @InterfaceAudience.Private
28 public class MutableSizeHistogram extends MutableRangeHistogram {
29 private final static String RANGE_TYPE = "SizeRangeCount";
30 private final static long[] RANGES = {10,100,1000,10000,100000,1000000,10000000,100000000};
31
32 public MutableSizeHistogram(MetricsInfo info) {
33 this(info.name(), info.description());
34 }
35
36 public MutableSizeHistogram(String name, String description) {
37 this(name, description, RANGES[RANGES.length-2]);
38 }
39
40 public MutableSizeHistogram(String name, String description, long expectedMax) {
41 super(name, description, expectedMax);
42 }
43
44 @Override
45 public String getRangeType() {
46 return RANGE_TYPE;
47 }
48
49 @Override
50 public long[] getRanges() {
51 return RANGES;
52 }
53
54 }