Package org.apache.hadoop.metrics2

Examples of org.apache.hadoop.metrics2.MetricsException

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      }
    }


    if (!(counter instanceof MutableCounterLong)) {
      throw new MetricsException("Metric already exists in registry for metric name: " +
              counterName + " and not of type MetricMutableCounterLong");
    }

    return (MutableCounterLong) counter;
  }
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      }
    }


    if (!(histo instanceof MutableHistogram)) {
      throw new MetricsException("Metric already exists in registry for metric name: " +
          histoName + " and not of type MutableHistogram");
    }

    return (MutableHistogram) histo;
  }
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      }
    }


    if (!(histo instanceof MetricMutableQuantiles)) {
      throw new MetricsException("Metric already exists in registry for metric name: " +
          histoName + " and not of type MutableHistogram");
    }

    return (MetricMutableQuantiles) histo;
  }
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  @SuppressWarnings("unchecked")
  private<T> T returnExistingWithCast(MutableMetric metric,
                                      Class<T> metricClass, String name) {
    if (!metricClass.isAssignableFrom(metric.getClass())) {
      throw new MetricsException("Metric already exists in registry for metric name: " +
              name + " and not of type " + metricClass +
              " but instead of type " + metric.getClass());
    }

    return (T) metric;
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  @Override
  public synchronized void start() {
    checkNotNull(prefix, "prefix");
    if (monitoring) {
      LOG.warn(prefix +" metrics system already started!",
               new MetricsException("Illegal start"));
      return;
    }
    for (Callback cb : callbacks) cb.preStart();
    configure(prefix);
    startTimer();
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  @Override
  public synchronized void stop() {
    if (!monitoring && !DefaultMetricsSystem.inMiniClusterMode()) {
      LOG.warn(prefix +" metrics system not yet started!",
               new MetricsException("Illegal stop"));
      return;
    }
    if (!monitoring) {
      // in mini cluster mode
      LOG.info(prefix +" metrics system stopped (again)");
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  @Override
  public synchronized void start() {
    checkNotNull(prefix, "prefix");
    if (monitoring) {
      LOG.warn(prefix +" metrics system already started!",
               new MetricsException("Illegal start"));
      return;
    }
    for (Callback cb : callbacks) cb.preStart();
    configure(prefix);
    startTimer();
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  @Override
  public synchronized void stop() {
    if (!monitoring && !DefaultMetricsSystem.inMiniClusterMode()) {
      LOG.warn(prefix +" metrics system not yet started!",
               new MetricsException("Illegal stop"));
      return;
    }
    if (!monitoring) {
      // in mini cluster mode
      LOG.info(prefix +" metrics system stopped (again)");
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  @Override
  public synchronized void start() {
    Contracts.checkNotNull(prefix, "prefix");
    if (monitoring) {
      LOG.warn(prefix +" metrics system already started!",
               new MetricsException("Illegal start"));
      return;
    }
    for (Callback cb : callbacks) cb.preStart();
    configure(prefix);
    startTimer();
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  @Override
  public synchronized void stop() {
    if (!monitoring) {
      LOG.warn(prefix +" metrics system not yet started!",
               new MetricsException("Illegal stop"));
      return;
    }
    for (Callback cb : callbacks) cb.preStop();
    LOG.info("Stopping "+ prefix +" metrics system...");
    stopTimer();
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Related Classes of org.apache.hadoop.metrics2.MetricsException

  • 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.hadoop.hbase.ipc.MetricsHBaseServerSourceImpl
  • org.apache.hadoop.hbase.master.MetricsMasterSourceImpl
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