apache/incubator-spark — pull request #22 by GraceH (2013-09-27 07:05:41+00:00)
Title: SPARK-900 Use coarser grained naming for metrics

see SPARK-900 Use coarser grained naming for metrics.
Now the new metric name is formatted as {XXX.YYY.ZZZ.COUNTER_UNIT}, XXX.YYY.ZZZ represents the group name, which can group several metrics under the same Ganglia view.