Examples of org.apache.hadoop.metrics2.MetricsException

org.apache.hadoop.metrics2.MetricsException
A general metrics exception wrapper

        return newGauge;
      }
    }


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


    return (MutableGaugeLong) metric;
  }

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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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    MetricsTag tag = new MetricsTag(name, description, value);


    if (!override) {
      MetricsTag existing = tagsMap.putIfAbsent(name, tag);
      if (existing != null) {
        throw new MetricsException("Tag "+ name +" already exists!");
      }
      return this;
    }


    tagsMap.put(name, tag);

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        return newGauge;
      }
    }


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


    return (MetricMutableGaugeLong) metric;
  }

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        return newCounter;
      }
    }


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


    return (MetricMutableCounterLong) counter;
  }

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        return newHisto;
      }
    }


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


    return (MetricMutableHistogram) histo;
  }

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        return newHisto;
      }
    }


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


    return (MetricMutableQuantiles) histo;
  }

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