Package org.apache.hadoop.metrics2

Examples of org.apache.hadoop.metrics2.MetricsCollector

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    DefaultMetricsSystem.setInstance(ms);
    return ms;
  }

  public static MetricsRecordBuilder mockMetricsRecordBuilder() {
    final MetricsCollector mc = mock(MetricsCollector.class);
    MetricsRecordBuilder rb = mock(MetricsRecordBuilder.class,
        new Answer<Object>() {
      @Override
      public Object answer(InvocationOnMock invocation) {
        Object[] args = invocation.getArguments();
        StringBuilder sb = new StringBuilder();
        for (Object o : args) {
          if (sb.length() > 0) sb.append(", ");
          sb.append(String.valueOf(o));
        }
        String methodName = invocation.getMethod().getName();
        LOG.debug(methodName +": "+ sb);
        return methodName.equals("parent") || methodName.equals("endRecord") ?
               mc : invocation.getMock();
      }
    });
    when(mc.addRecord(anyString())).thenReturn(rb);
    when(mc.addRecord(anyInfo())).thenReturn(rb);
    return rb;
  }
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   * @return the record builder mock to verify
   */
  public static MetricsRecordBuilder getMetrics(MetricsSource source,
                                                boolean all) {
    MetricsRecordBuilder rb = mockMetricsRecordBuilder();
    MetricsCollector mc = rb.parent();
    source.getMetrics(mc, all);
    return rb;
  }
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  }

  @Test public void testClasses() {
    MetricsRecordBuilder rb = getMetrics(
        MetricsAnnotations.makeSource(new MyMetrics3()));
    MetricsCollector collector = rb.parent();

    verify(collector).addRecord(info("MyMetrics3", "My metrics"));
    verify(rb).add(tag(MsInfo.Context, "foo"));
  }
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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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    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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Related Classes of org.apache.hadoop.metrics2.MetricsCollector

  • 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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