Field Detail

• HBASE_METRICS_SYSTEM_NAME

  static final String HBASE_METRICS_SYSTEM_NAME

  See Also:

  Constant Field Values

Method Detail

• init

  void init()

  Clear out the metrics and re-prepare the source.

• setGauge

  void setGauge(String gaugeName,
              long value)

  Set a gauge to a specific value.

  Parameters:

  gaugeName - the name of the gauge

  value - the value

• incGauge

  void incGauge(String gaugeName,
              long delta)

  Add some amount to a gauge.

  Parameters:

  gaugeName - the name of the gauge

  delta - the amount to change the gauge by.

• decGauge

  void decGauge(String gaugeName,
              long delta)

  Subtract some amount from a gauge.

  Parameters:

  gaugeName - the name of the gauge

  delta - the amount to change the gauge by.

• removeMetric

  void removeMetric(String key)

  Remove a metric and no longer announce it.

  Parameters:

  key - Name of the gauge to remove.

• incCounters

  void incCounters(String counterName,
                 long delta)

  Add some amount to a counter.

  Parameters:

  counterName - the name of the counter

  delta - the amount to change the counter by.

• updateHistogram

  void updateHistogram(String name,
                     long value)

  Add some value to a histogram.

  Parameters:

  name - the name of the histogram

  value - the value to add to the histogram

• updateQuantile

  void updateQuantile(String name,
                    long value)

  Add some value to a Quantile (An accurate histogram).

  Parameters:

  name - the name of the quantile

  value - the value to add to the quantile

• getMetricsContext

  String getMetricsContext()

  Get the metrics context. For hadoop metrics2 system this is usually an all lowercased string. eg. regionserver, master, thriftserver

  Returns:

  The string context used to register this source to hadoop's metrics2 system.

• getMetricsDescription

  String getMetricsDescription()

  Get the description of what this source exposes.

• getMetricsJmxContext

  String getMetricsJmxContext()

  Get the name of the context in JMX that this source will be exposed through. This is in ObjectName format. With the default context being Hadoop -> HBase

• getMetricsName

  String getMetricsName()

  Get the name of the metrics that are being exported by this source. Eg. IPC, GC, WAL