devapidocs/src-html/org/apache/hadoop/hbase/io/hfile/AgeSnapshot.html - hbase-site - Git at Google

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 <pre><span class="source-line-no">001</span><span id="line-1">/*</span>
 <span class="source-line-no">002</span><span id="line-2"> * Licensed to the Apache Software Foundation (ASF) under one</span>
 <span class="source-line-no">003</span><span id="line-3"> * or more contributor license agreements.  See the NOTICE file</span>
 <span class="source-line-no">004</span><span id="line-4"> * distributed with this work for additional information</span>
 <span class="source-line-no">005</span><span id="line-5"> * regarding copyright ownership.  The ASF licenses this file</span>
 <span class="source-line-no">006</span><span id="line-6"> * to you under the Apache License, Version 2.0 (the</span>
 <span class="source-line-no">007</span><span id="line-7"> * "License"); you may not use this file except in compliance</span>
 <span class="source-line-no">008</span><span id="line-8"> * with the License.  You may obtain a copy of the License at</span>
 <span class="source-line-no">009</span><span id="line-9"> *</span>
 <span class="source-line-no">010</span><span id="line-10"> *     http://www.apache.org/licenses/LICENSE-2.0</span>
 <span class="source-line-no">011</span><span id="line-11"> *</span>
 <span class="source-line-no">012</span><span id="line-12"> * Unless required by applicable law or agreed to in writing, software</span>
 <span class="source-line-no">013</span><span id="line-13"> * distributed under the License is distributed on an "AS IS" BASIS,</span>
 <span class="source-line-no">014</span><span id="line-14"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span>
 <span class="source-line-no">015</span><span id="line-15"> * See the License for the specific language governing permissions and</span>
 <span class="source-line-no">016</span><span id="line-16"> * limitations under the License.</span>
 <span class="source-line-no">017</span><span id="line-17"> */</span>
 <span class="source-line-no">018</span><span id="line-18">package org.apache.hadoop.hbase.io.hfile;</span>
 <span class="source-line-no">019</span><span id="line-19"></span>
 <span class="source-line-no">020</span><span id="line-20">import org.apache.hadoop.hbase.metrics.impl.FastLongHistogram;</span>
 <span class="source-line-no">021</span><span id="line-21">import org.apache.yetus.audience.InterfaceAudience;</span>
 <span class="source-line-no">022</span><span id="line-22"></span>
 <span class="source-line-no">023</span><span id="line-23">/**</span>
 <span class="source-line-no">024</span><span id="line-24"> * Snapshot of block cache age in cache. This object is preferred because we can control how it is</span>
 <span class="source-line-no">025</span><span id="line-25"> * serialized out when JSON'ing.</span>
 <span class="source-line-no">026</span><span id="line-26"> */</span>
 <span class="source-line-no">027</span><span id="line-27">@InterfaceAudience.Private</span>
 <span class="source-line-no">028</span><span id="line-28">public class AgeSnapshot {</span>
 <span class="source-line-no">029</span><span id="line-29"></span>
 <span class="source-line-no">030</span><span id="line-30">  private transient final FastLongHistogram ageHistogram;</span>
 <span class="source-line-no">031</span><span id="line-31">  private transient final long[] quantiles;</span>
 <span class="source-line-no">032</span><span id="line-32"></span>
 <span class="source-line-no">033</span><span id="line-33">  AgeSnapshot(final FastLongHistogram ageHistogram) {</span>
 <span class="source-line-no">034</span><span id="line-34">    this.ageHistogram = ageHistogram;</span>
 <span class="source-line-no">035</span><span id="line-35">    this.quantiles = ageHistogram.getQuantiles(new double[] { 0.75, 0.95, 0.98, 0.99, 0.999 });</span>
 <span class="source-line-no">036</span><span id="line-36">  }</span>
 <span class="source-line-no">037</span><span id="line-37"></span>
 <span class="source-line-no">038</span><span id="line-38">  public double get75thPercentile() {</span>
 <span class="source-line-no">039</span><span id="line-39">    return quantiles[0];</span>
 <span class="source-line-no">040</span><span id="line-40">  }</span>
 <span class="source-line-no">041</span><span id="line-41"></span>
 <span class="source-line-no">042</span><span id="line-42">  public double get95thPercentile() {</span>
 <span class="source-line-no">043</span><span id="line-43">    return quantiles[1];</span>
 <span class="source-line-no">044</span><span id="line-44">  }</span>
 <span class="source-line-no">045</span><span id="line-45"></span>
 <span class="source-line-no">046</span><span id="line-46">  public double get98thPercentile() {</span>
 <span class="source-line-no">047</span><span id="line-47">    return quantiles[2];</span>
 <span class="source-line-no">048</span><span id="line-48">  }</span>
 <span class="source-line-no">049</span><span id="line-49"></span>
 <span class="source-line-no">050</span><span id="line-50">  public double get99thPercentile() {</span>
 <span class="source-line-no">051</span><span id="line-51">    return quantiles[3];</span>
 <span class="source-line-no">052</span><span id="line-52">  }</span>
 <span class="source-line-no">053</span><span id="line-53"></span>
 <span class="source-line-no">054</span><span id="line-54">  public double get999thPercentile() {</span>
 <span class="source-line-no">055</span><span id="line-55">    return quantiles[4];</span>
 <span class="source-line-no">056</span><span id="line-56">  }</span>
 <span class="source-line-no">057</span><span id="line-57"></span>
 <span class="source-line-no">058</span><span id="line-58">  public double getMean() {</span>
 <span class="source-line-no">059</span><span id="line-59">    return this.ageHistogram.getMean();</span>
 <span class="source-line-no">060</span><span id="line-60">  }</span>
 <span class="source-line-no">061</span><span id="line-61"></span>
 <span class="source-line-no">062</span><span id="line-62">  public double getMax() {</span>
 <span class="source-line-no">063</span><span id="line-63">    return this.ageHistogram.getMax();</span>
 <span class="source-line-no">064</span><span id="line-64">  }</span>
 <span class="source-line-no">065</span><span id="line-65"></span>
 <span class="source-line-no">066</span><span id="line-66">  public double getMin() {</span>
 <span class="source-line-no">067</span><span id="line-67">    return this.ageHistogram.getMin();</span>
 <span class="source-line-no">068</span><span id="line-68">  }</span>
 <span class="source-line-no">069</span><span id="line-69">}</span>


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	<pre><span class="source-line-no">001</span><span id="line-1">/*</span>
	<span class="source-line-no">002</span><span id="line-2"> * Licensed to the Apache Software Foundation (ASF) under one</span>
	<span class="source-line-no">003</span><span id="line-3"> * or more contributor license agreements. See the NOTICE file</span>
	<span class="source-line-no">004</span><span id="line-4"> * distributed with this work for additional information</span>
	<span class="source-line-no">005</span><span id="line-5"> * regarding copyright ownership. The ASF licenses this file</span>
	<span class="source-line-no">006</span><span id="line-6"> * to you under the Apache License, Version 2.0 (the</span>
	<span class="source-line-no">007</span><span id="line-7"> * "License"); you may not use this file except in compliance</span>
	<span class="source-line-no">008</span><span id="line-8"> * with the License. You may obtain a copy of the License at</span>
	<span class="source-line-no">009</span><span id="line-9"> *</span>
	<span class="source-line-no">010</span><span id="line-10"> * http://www.apache.org/licenses/LICENSE-2.0</span>
	<span class="source-line-no">011</span><span id="line-11"> *</span>
	<span class="source-line-no">012</span><span id="line-12"> * Unless required by applicable law or agreed to in writing, software</span>
	<span class="source-line-no">013</span><span id="line-13"> * distributed under the License is distributed on an "AS IS" BASIS,</span>
	<span class="source-line-no">014</span><span id="line-14"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span>
	<span class="source-line-no">015</span><span id="line-15"> * See the License for the specific language governing permissions and</span>
	<span class="source-line-no">016</span><span id="line-16"> * limitations under the License.</span>
	<span class="source-line-no">017</span><span id="line-17"> */</span>
	<span class="source-line-no">018</span><span id="line-18">package org.apache.hadoop.hbase.io.hfile;</span>
	<span class="source-line-no">019</span><span id="line-19"></span>
	<span class="source-line-no">020</span><span id="line-20">import org.apache.hadoop.hbase.metrics.impl.FastLongHistogram;</span>
	<span class="source-line-no">021</span><span id="line-21">import org.apache.yetus.audience.InterfaceAudience;</span>
	<span class="source-line-no">022</span><span id="line-22"></span>
	<span class="source-line-no">023</span><span id="line-23">/**</span>
	<span class="source-line-no">024</span><span id="line-24"> * Snapshot of block cache age in cache. This object is preferred because we can control how it is</span>
	<span class="source-line-no">025</span><span id="line-25"> * serialized out when JSON'ing.</span>
	<span class="source-line-no">026</span><span id="line-26"> */</span>
	<span class="source-line-no">027</span><span id="line-27">@InterfaceAudience.Private</span>
	<span class="source-line-no">028</span><span id="line-28">public class AgeSnapshot {</span>
	<span class="source-line-no">029</span><span id="line-29"></span>
	<span class="source-line-no">030</span><span id="line-30"> private transient final FastLongHistogram ageHistogram;</span>
	<span class="source-line-no">031</span><span id="line-31"> private transient final long[] quantiles;</span>
	<span class="source-line-no">032</span><span id="line-32"></span>
	<span class="source-line-no">033</span><span id="line-33"> AgeSnapshot(final FastLongHistogram ageHistogram) {</span>
	<span class="source-line-no">034</span><span id="line-34"> this.ageHistogram = ageHistogram;</span>
	<span class="source-line-no">035</span><span id="line-35"> this.quantiles = ageHistogram.getQuantiles(new double[] { 0.75, 0.95, 0.98, 0.99, 0.999 });</span>
	<span class="source-line-no">036</span><span id="line-36"> }</span>
	<span class="source-line-no">037</span><span id="line-37"></span>
	<span class="source-line-no">038</span><span id="line-38"> public double get75thPercentile() {</span>
	<span class="source-line-no">039</span><span id="line-39"> return quantiles[0];</span>
	<span class="source-line-no">040</span><span id="line-40"> }</span>
	<span class="source-line-no">041</span><span id="line-41"></span>
	<span class="source-line-no">042</span><span id="line-42"> public double get95thPercentile() {</span>
	<span class="source-line-no">043</span><span id="line-43"> return quantiles[1];</span>
	<span class="source-line-no">044</span><span id="line-44"> }</span>
	<span class="source-line-no">045</span><span id="line-45"></span>
	<span class="source-line-no">046</span><span id="line-46"> public double get98thPercentile() {</span>
	<span class="source-line-no">047</span><span id="line-47"> return quantiles[2];</span>
	<span class="source-line-no">048</span><span id="line-48"> }</span>
	<span class="source-line-no">049</span><span id="line-49"></span>
	<span class="source-line-no">050</span><span id="line-50"> public double get99thPercentile() {</span>
	<span class="source-line-no">051</span><span id="line-51"> return quantiles[3];</span>
	<span class="source-line-no">052</span><span id="line-52"> }</span>
	<span class="source-line-no">053</span><span id="line-53"></span>
	<span class="source-line-no">054</span><span id="line-54"> public double get999thPercentile() {</span>
	<span class="source-line-no">055</span><span id="line-55"> return quantiles[4];</span>
	<span class="source-line-no">056</span><span id="line-56"> }</span>
	<span class="source-line-no">057</span><span id="line-57"></span>
	<span class="source-line-no">058</span><span id="line-58"> public double getMean() {</span>
	<span class="source-line-no">059</span><span id="line-59"> return this.ageHistogram.getMean();</span>
	<span class="source-line-no">060</span><span id="line-60"> }</span>
	<span class="source-line-no">061</span><span id="line-61"></span>
	<span class="source-line-no">062</span><span id="line-62"> public double getMax() {</span>
	<span class="source-line-no">063</span><span id="line-63"> return this.ageHistogram.getMax();</span>
	<span class="source-line-no">064</span><span id="line-64"> }</span>
	<span class="source-line-no">065</span><span id="line-65"></span>
	<span class="source-line-no">066</span><span id="line-66"> public double getMin() {</span>
	<span class="source-line-no">067</span><span id="line-67"> return this.ageHistogram.getMin();</span>
	<span class="source-line-no">068</span><span id="line-68"> }</span>
	<span class="source-line-no">069</span><span id="line-69">}</span>




























































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