HDFS Cache Directive Metrics
| Metric Name | Description | Unit | CDH Version |
|---|---|---|---|
| cache_needed | The cache space needed by the HDFS cache directive. | bytes | CDH 5 |
| cache_used | The total cache used. | bytes | CDH 5 |
| files_cached | The number of files cached by the HDFS cache directive. | files | CDH 5 |
| files_needed | The number of files needed by the HDFS cache directive. | files | CDH 5 |