Metricssystem - aajisaka/hadoop-metrics GitHub Wiki

• NumActiveSources
  • Current number of active metrics sources (NOT include MetricsSystem)
• NumAllSources
  • Total number of metrics sources (NOT include MetricsSystem)
• NumActiveSinks
  • Current number of active sinks
• NumAllSinks
  • Total number of sinks (BUT always set to 0)
• Sink_(instance)NumOps (*)
  • Total number of sink operations for the instance
• Sink_(instance)AvgTime (*)
  • Average time in milliseconds of sink operations for the instance
• Sink_(instance)Dropped (*)
  • Total number of dropped sink operations for the instance
• Sink_(instance)Qsize (*)
  • Current queue length of sink operations (BUT always set to 0 because nothing to increment)
• SnapshotNumOps
  • Total number of operations to snapshot stats from a metrics source (includes MetricsSystem)
• SnapshotAvgTime
  • Average time in milliseconds to snapshot stats from a metrics source (includes MetricsSystem)
• PublishNumOps
  • Total number of operations to publish stats to a sink
• PublishAvgTime
  • Average time in milliseconds to publish stats to a sink
• DroppedPubAll
  • Total number of dropped publishes

For more details, see org.apache.hadoop.metrics2.impl.MetricsSystemImpl.java and org.apache.hadoop.metrics2.impl.MetricsSyncAdapter.java.

(*) (instance) is the name as the [instance] of "[prefix].[source|sink].[instance].[option]" by hadoop-metrics2.properties.