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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.metrics2.lib;</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 static org.junit.Assert.assertEquals;</span> |
| <span class="source-line-no">021</span><span id="line-21"></span> |
| <span class="source-line-no">022</span><span id="line-22">import java.util.ArrayList;</span> |
| <span class="source-line-no">023</span><span id="line-23">import java.util.List;</span> |
| <span class="source-line-no">024</span><span id="line-24">import org.apache.hadoop.hbase.HBaseClassTestRule;</span> |
| <span class="source-line-no">025</span><span id="line-25">import org.apache.hadoop.hbase.testclassification.MetricsTests;</span> |
| <span class="source-line-no">026</span><span id="line-26">import org.apache.hadoop.hbase.testclassification.SmallTests;</span> |
| <span class="source-line-no">027</span><span id="line-27">import org.apache.hadoop.metrics2.AbstractMetric;</span> |
| <span class="source-line-no">028</span><span id="line-28">import org.apache.hadoop.metrics2.MetricsRecord;</span> |
| <span class="source-line-no">029</span><span id="line-29">import org.apache.hadoop.metrics2.impl.MetricsCollectorImpl;</span> |
| <span class="source-line-no">030</span><span id="line-30">import org.junit.ClassRule;</span> |
| <span class="source-line-no">031</span><span id="line-31">import org.junit.Test;</span> |
| <span class="source-line-no">032</span><span id="line-32">import org.junit.experimental.categories.Category;</span> |
| <span class="source-line-no">033</span><span id="line-33"></span> |
| <span class="source-line-no">034</span><span id="line-34">@Category({ MetricsTests.class, SmallTests.class })</span> |
| <span class="source-line-no">035</span><span id="line-35">public class TestMutableRangeHistogram {</span> |
| <span class="source-line-no">036</span><span id="line-36"></span> |
| <span class="source-line-no">037</span><span id="line-37"> @ClassRule</span> |
| <span class="source-line-no">038</span><span id="line-38"> public static final HBaseClassTestRule CLASS_RULE =</span> |
| <span class="source-line-no">039</span><span id="line-39"> HBaseClassTestRule.forClass(TestMutableRangeHistogram.class);</span> |
| <span class="source-line-no">040</span><span id="line-40"></span> |
| <span class="source-line-no">041</span><span id="line-41"> private static final String RECORD_NAME = "test";</span> |
| <span class="source-line-no">042</span><span id="line-42"> private static final String SIZE_HISTOGRAM_NAME = "TestSize";</span> |
| <span class="source-line-no">043</span><span id="line-43"></span> |
| <span class="source-line-no">044</span><span id="line-44"> /**</span> |
| <span class="source-line-no">045</span><span id="line-45"> * calculate the distribution for last bucket, see HBASE-24615 for detail.</span> |
| <span class="source-line-no">046</span><span id="line-46"> */</span> |
| <span class="source-line-no">047</span><span id="line-47"> @Test</span> |
| <span class="source-line-no">048</span><span id="line-48"> public void testLastBucketWithSizeHistogram() {</span> |
| <span class="source-line-no">049</span><span id="line-49"> // create and init histogram minValue and maxValue</span> |
| <span class="source-line-no">050</span><span id="line-50"> MetricsCollectorImpl collector = new MetricsCollectorImpl();</span> |
| <span class="source-line-no">051</span><span id="line-51"> MutableSizeHistogram histogram = new MutableSizeHistogram(SIZE_HISTOGRAM_NAME, "");</span> |
| <span class="source-line-no">052</span><span id="line-52"> long[] ranges = histogram.getRanges();</span> |
| <span class="source-line-no">053</span><span id="line-53"> int len = ranges.length;</span> |
| <span class="source-line-no">054</span><span id="line-54"> histogram.add(0L);</span> |
| <span class="source-line-no">055</span><span id="line-55"> histogram.add(ranges[len - 1]);</span> |
| <span class="source-line-no">056</span><span id="line-56"> histogram.snapshot(collector.addRecord(RECORD_NAME), true);</span> |
| <span class="source-line-no">057</span><span id="line-57"> collector.clear();</span> |
| <span class="source-line-no">058</span><span id="line-58"></span> |
| <span class="source-line-no">059</span><span id="line-59"> // fill up values and snapshot</span> |
| <span class="source-line-no">060</span><span id="line-60"> histogram.add(ranges[len - 2] * 2);</span> |
| <span class="source-line-no">061</span><span id="line-61"> histogram.add(ranges[len - 1] * 2);</span> |
| <span class="source-line-no">062</span><span id="line-62"> histogram.snapshot(collector.addRecord(RECORD_NAME), true);</span> |
| <span class="source-line-no">063</span><span id="line-63"> List<? extends MetricsRecord> records = collector.getRecords();</span> |
| <span class="source-line-no">064</span><span id="line-64"> assertEquals(1, records.size());</span> |
| <span class="source-line-no">065</span><span id="line-65"> MetricsRecord record = records.iterator().next();</span> |
| <span class="source-line-no">066</span><span id="line-66"> assertEquals(RECORD_NAME, record.name());</span> |
| <span class="source-line-no">067</span><span id="line-67"></span> |
| <span class="source-line-no">068</span><span id="line-68"> // get size range metrics</span> |
| <span class="source-line-no">069</span><span id="line-69"> String histogramMetricPrefix = SIZE_HISTOGRAM_NAME + "_" + histogram.getRangeType();</span> |
| <span class="source-line-no">070</span><span id="line-70"> List<AbstractMetric> metrics = new ArrayList<>();</span> |
| <span class="source-line-no">071</span><span id="line-71"> for (AbstractMetric metric : record.metrics()) {</span> |
| <span class="source-line-no">072</span><span id="line-72"> if (metric.name().startsWith(histogramMetricPrefix)) {</span> |
| <span class="source-line-no">073</span><span id="line-73"> metrics.add(metric);</span> |
| <span class="source-line-no">074</span><span id="line-74"> }</span> |
| <span class="source-line-no">075</span><span id="line-75"> }</span> |
| <span class="source-line-no">076</span><span id="line-76"> assertEquals(2, metrics.size());</span> |
| <span class="source-line-no">077</span><span id="line-77"></span> |
| <span class="source-line-no">078</span><span id="line-78"> // check range [10000000,100000000]</span> |
| <span class="source-line-no">079</span><span id="line-79"> String metricName = histogramMetricPrefix + "_" + ranges[len - 2] + "-" + ranges[len - 1];</span> |
| <span class="source-line-no">080</span><span id="line-80"> assertEquals(metricName, metrics.get(0).name());</span> |
| <span class="source-line-no">081</span><span id="line-81"> assertEquals(1, metrics.get(0).value().longValue());</span> |
| <span class="source-line-no">082</span><span id="line-82"></span> |
| <span class="source-line-no">083</span><span id="line-83"> // check range [100000000, inf]</span> |
| <span class="source-line-no">084</span><span id="line-84"> metricName = histogramMetricPrefix + "_" + ranges[len - 1] + "-inf";</span> |
| <span class="source-line-no">085</span><span id="line-85"> assertEquals(metricName, metrics.get(1).name(), metricName);</span> |
| <span class="source-line-no">086</span><span id="line-86"> assertEquals(1, metrics.get(1).value().longValue());</span> |
| <span class="source-line-no">087</span><span id="line-87"> }</span> |
| <span class="source-line-no">088</span><span id="line-88">}</span> |
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