hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestMetricsTableLatencies.java

   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 package org.apache.hadoop.hbase.regionserver;
  19
  20 import static org.junit.Assert.assertTrue;
  21
  22 import java.io.IOException;
  23
  24 import org.apache.hadoop.hbase.CompatibilityFactory;
  25 import org.apache.hadoop.hbase.CompatibilitySingletonFactory;
  26 import org.apache.hadoop.hbase.HBaseClassTestRule;
  27 import org.apache.hadoop.hbase.TableName;
  28 import org.apache.hadoop.hbase.test.MetricsAssertHelper;
  29 import org.apache.hadoop.hbase.testclassification.RegionServerTests;
  30 import org.apache.hadoop.hbase.testclassification.SmallTests;
  31 import org.junit.ClassRule;
  32 import org.junit.Test;
  33 import org.junit.experimental.categories.Category;
  34
  35 @Category({RegionServerTests.class, SmallTests.class})
  36 public class TestMetricsTableLatencies {
  37
  38   @ClassRule
  39   public static final HBaseClassTestRule CLASS_RULE =
  40       HBaseClassTestRule.forClass(TestMetricsTableLatencies.class);
  41
  42   public static MetricsAssertHelper HELPER =
  43       CompatibilityFactory.getInstance(MetricsAssertHelper.class);
  44
  45   @Test
  46   public void testTableWrapperAggregateMetrics() throws IOException {
  47     TableName tn1 = TableName.valueOf("table1");
  48     TableName tn2 = TableName.valueOf("table2");
  49     MetricsTableLatencies latencies = CompatibilitySingletonFactory.getInstance(
  50         MetricsTableLatencies.class);
  51     assertTrue("'latencies' is actually " + latencies.getClass(),
  52         latencies instanceof MetricsTableLatenciesImpl);
  53     MetricsTableLatenciesImpl latenciesImpl = (MetricsTableLatenciesImpl) latencies;
  54     RegionServerTableMetrics tableMetrics = new RegionServerTableMetrics();
  55
  56     // Metrics to each table should be disjoint
  57     // N.B. each call to assertGauge removes all previously acquired metrics so we have to
  58     //   make the metrics call and then immediately verify it. Trying to do multiple metrics
  59     //   updates followed by multiple verifications will fail on the 2nd verification (as the
  60     //   first verification cleaned the data structures in MetricsAssertHelperImpl).
  61     tableMetrics.updateGet(tn1, 500L);
  62     HELPER.assertGauge(MetricsTableLatenciesImpl.qualifyMetricsName(
  63         tn1, MetricsTableLatencies.GET_TIME + "_" + "999th_percentile"), 500L, latenciesImpl);
  64     tableMetrics.updatePut(tn1, 50L);
  65     HELPER.assertGauge(MetricsTableLatenciesImpl.qualifyMetricsName(
  66         tn1, MetricsTableLatencies.PUT_TIME + "_" + "99th_percentile"), 50L, latenciesImpl);
  67
  68     tableMetrics.updateGet(tn2, 300L);
  69     HELPER.assertGauge(MetricsTableLatenciesImpl.qualifyMetricsName(
  70         tn2, MetricsTableLatencies.GET_TIME + "_" + "999th_percentile"), 300L, latenciesImpl);
  71     tableMetrics.updatePut(tn2, 75L);
  72     HELPER.assertGauge(MetricsTableLatenciesImpl.qualifyMetricsName(
  73         tn2, MetricsTableLatencies.PUT_TIME + "_" + "99th_percentile"), 75L, latenciesImpl);
  74   }
  75 }