程序包org.apache.hadoop.metrics.jvm的分层结构

程序包分层结构:

• 所有程序包

类分层结构

• java.lang.Object
  • org.apache.log4j.AppenderSkeleton (implements org.apache.log4j.Appender, org.apache.log4j.spi.OptionHandler)
    • org.apache.hadoop.log.metrics.EventCounter
      • org.apache.hadoop.metrics.jvm.EventCounter
  • org.apache.hadoop.metrics.jvm.JvmMetrics (implements org.apache.hadoop.metrics.Updater)