TajoSystemMetrics.java 文件源码

public void start() {
  setMetricsReporter(metricsGroupName);

  String jvmMetricsName = metricsGroupName + "-jvm";
  setMetricsReporter(jvmMetricsName);

  if(!inited) {
    metricRegistry.register(MetricRegistry.name(jvmMetricsName, "Heap"), new MemoryUsageGaugeSet());
    metricRegistry.register(MetricRegistry.name(jvmMetricsName, "File"), new FileDescriptorRatioGauge());
    metricRegistry.register(MetricRegistry.name(jvmMetricsName, "GC"), new GarbageCollectorMetricSet());
    metricRegistry.register(MetricRegistry.name(jvmMetricsName, "Thread"), new ThreadStatesGaugeSet());
    metricRegistry.register(MetricRegistry.name(jvmMetricsName, "Log"), new LogEventGaugeSet());
  }
  inited = true;
}