ambari/ambari-web/app/assets/data/services/metrics/hdfs/gc.json

{
  "href" : "http://ec2-23-22-183-40.compute-1.amazonaws.com:9998/clusters/SrimanthAmbari/hosts/ip-10-224-3-23.ec2.internal/host_components/NAMENODE?fields=metrics/jvm/gcTimeMillis[1351117114,1351120714,60]",
  "HostRoles" : {
    "cluster_name" : "SrimanthAmbari",
    "component_name" : "NAMENODE",
    "host_name" : "ip-10-224-3-23.ec2.internal"
  },
  "host" : {
    "href" : "http://ec2-23-22-183-40.compute-1.amazonaws.com:9998/clusters/SrimanthAmbari/hosts/ip-10-224-3-23.ec2.internal"
  },
  "metrics" : {
    "jvm" : {
      "gcTimeMillis" : "[[0.0,1351117440],[0.0,1351117800],[0.0,1351118160],[0.0,1351118520],[0.0,1351118880],[0.0,1351119240],[0.0,1351119600],[0.0,1351119960],[0.0,1351120320],[0.0,1351120680],[0.027777777778,1351121040]]"
    }
  }
}