{
 "NAMENODE": {
 "Component": [
 {
 "type": "ganglia",
 "metrics": {
 "default": {
 "metrics/jvm/memHeapUsedM": {
 "metric": "jvm.JvmMetrics.MemHeapUsedM",
 "unit": "MB",
 "pointInTime": false,
 "temporal": true
 },
 "metrics/jvm/memHeapCommittedM": {
 "metric": "jvm.JvmMetrics.MemHeapCommittedM",
 "unit": "MB",
 "pointInTime": true,
 "temporal": true
 }
 }
 }
 }]
 }
}