Package org.apache.hadoop.hbase.metrics.histogram

Examples of org.apache.hadoop.hbase.metrics.histogram.ExponentiallyDecayingSample

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public class TestExponentiallyDecayingSample {
 
  @Test
  public void testBasic() {
      final ExponentiallyDecayingSample sample =
          new ExponentiallyDecayingSample(100, 0.99);
     
      for (int i = 0; i < 1000; i++) {
          sample.update(i);
      }
      Assert.assertEquals(100, sample.size());
     
      final Snapshot snapshot = sample.getSnapshot();
      Assert.assertEquals(100, snapshot.size());

      for (double i : snapshot.getValues()) {
        Assert.assertTrue(i >= 0.0 && i < 1000.0);
      }
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      }
  }

  @Test
  public void testTooBig() throws Exception {
      final ExponentiallyDecayingSample sample =
          new ExponentiallyDecayingSample(100, 0.99);
      for (int i = 0; i < 10; i++) {
          sample.update(i);
      }
      Assert.assertEquals(10, sample.size());

      final Snapshot snapshot = sample.getSnapshot();
      Assert.assertEquals(10, sample.size());

      for (double i : snapshot.getValues()) {
        Assert.assertTrue(i >= 0.0 && i < 1000.0);
      }
  }
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Related Classes of org.apache.hadoop.hbase.metrics.histogram.ExponentiallyDecayingSample

  • org.apache.hadoop.hbase.metrics.TestExponentiallyDecayingSample
  • java.util.concurrent.ThreadFactory
  • java.util.concurrent.atomic.AtomicInteger
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