Package org.apache.hadoop.metrics2

Examples of org.apache.hadoop.metrics2.Metric

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   *
   * @param gaugeName The name of the gauge.
   * @param delta the ammount to subtract from a gauge value.
   */
  public void decGauge(String gaugeName, long delta) {
    MetricMutableGaugeLong gaugeInt = metricsRegistry.getLongGauge(gaugeName,
        0l);
    gaugeInt.decr(delta);
  }
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   * @param initValue of the metric
   * @return a new gauge object
   */
  public MetricMutableGaugeLong newGauge(String name, String description,
      long initValue) {
    MetricMutableGaugeLong ret = mf.newGauge(name, description, initValue);
    return addNewMetricIfAbsent(name, ret, MetricMutableGaugeLong.class);
  }
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    // If it's not there then try and put a new one in the storage.
    if (metric == null) {

      // Create the potential new gauge.
      MetricMutableGaugeLong newGauge = mf.newGauge(gaugeName, "",
          potentialStartingValue);

      // Try and put the gauge in. This is atomic.
      metric = metricsMap.putIfAbsent(gaugeName, newGauge);
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  @Test
  public void testSetGauge() throws Exception {
    String key = "testset";
    bmsi.setGauge(key, 100);
    MetricMutableGaugeLong g = (MetricMutableGaugeLong) bmsi.metricsRegistry
        .get(key);
    assertEquals(key, g.name);
    bmsi.setGauge(key, 110);
    assertSame(g, bmsi.metricsRegistry.get(key));
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  @Test
  public void testIncGauge() throws Exception {
    String key = "testincgauge";
    bmsi.incGauge(key, 100);
    MetricMutableGaugeLong g = (MetricMutableGaugeLong) bmsi.metricsRegistry
        .get(key);
    assertEquals(key, g.name);
    bmsi.incGauge(key, 10);
    assertSame(g, bmsi.metricsRegistry.get(key));
  }
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  @Test
  public void testDecGauge() throws Exception {
    String key = "testdec";
    bmsi.decGauge(key, 100);
    MetricMutableGaugeLong g = (MetricMutableGaugeLong) bmsi.metricsRegistry
        .get(key);
    assertEquals(key, g.name);
    bmsi.decGauge(key, 100);
    assertSame(g, bmsi.metricsRegistry.get(key));
  }
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   * @param extended produce extended stat (stdev, min/max etc.) if true.
   * @return a new metric object
   */
  public MetricMutableStat newStat(String name, String description,
      String sampleName, String valueName, boolean extended) {
    MetricMutableStat ret = mf.newStat(name, description, sampleName,
        valueName, extended);
    return addNewMetricIfAbsent(name, ret, MetricMutableStat.class);
  }
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    @Metric("YYY desc") MutableGaugeLong yyy;
    @Metric MutableRate s1;
    final MetricsRegistry registry;

    TestSource(String recName) {
      registry = new MetricsRegistry(recName);
    }
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    @Metric("YYY desc") MutableGaugeLong yyy;
    @Metric MutableRate s1;
    final MetricsRegistry registry;

    TestSource(String recName) {
      registry = new MetricsRegistry(recName);
    }
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    for (Callback cb : callbacks) cb.postStop();
  }

  @Override public synchronized <T>
  T register(String name, String desc, T source) {
    MetricsSourceBuilder sb = MetricsAnnotations.newSourceBuilder(source);
    final MetricsSource s = sb.build();
    MetricsInfo si = sb.info();
    String name2 = name == null ? si.name() : name;
    final String finalDesc = desc == null ? si.description() : desc;
    final String finalName = // be friendly to non-metrics tests
        DefaultMetricsSystem.sourceName(name2, !monitoring);
    allSources.put(finalName, s);
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Related Classes of org.apache.hadoop.metrics2.Metric

  • com.alibaba.wasp.metrics.BaseSourceImpl
  • com.alibaba.wasp.metrics.DynamicMetricsRegistry
  • com.alibaba.wasp.metrics.TestBaseSourceImpl
  • com.yammer.metrics.stats.ExponentiallyDecayingSample
  • com.yammer.metrics.stats.Snapshot
  • org.apache.commons.configuration.Configuration
  • org.apache.commons.configuration.PropertiesConfiguration
  • org.apache.commons.configuration.SubsetConfiguration
  • org.apache.commons.lang.builder.ToStringBuilder
  • org.apache.hadoop.hbase.ipc.MetricsHBaseServerSourceImpl
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