Examples of org.apache.hadoop.metrics2.AbstractMetric

org.apache.hadoop.metrics2.MetricsException
The immutable metric

    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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  }


  private <T> T returnExistingWithCast(MetricMutable 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);
    }


    return (T) metric;

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      writer = filename == null
          ? new PrintWriter(System.out)
          : new PrintWriter(new FileWriter(new File(filename), true));
    }
    catch (Exception e) {
      throw new MetricsException("Error creating "+ filename, e);
    }
  }

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        try {
            // Open an connection to Graphite server.
            socket = new Socket(serverHost, serverPort);
            writer = new OutputStreamWriter(socket.getOutputStream());
        } catch (Exception e) {
            throw new MetricsException("Error creating connection, "
                    + serverHost + ":" + serverPort, e);
        }
    }

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        try {
            if(writer != null){
              writer.write(lines.toString());
            } else {
              throw new MetricsException("Writer in GraphiteSink is null!");
            }
        } catch (Exception e) {
            throw new MetricsException("Error sending metrics", e);
        }
    }

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    @Override
    public void flush() {
        try {
            writer.flush();
        } catch (Exception e) {
            throw new MetricsException("Error flushing metrics", e);
        }
    }

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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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