HDFS Home
The HDFS - Home dashboard displays metrics that show operating status for HDFS.
| Row | Metrics | Description |
|---|---|---|
| NUMBER OF FILES UNDER CONSTRUCTION & RPC CLIENT CONNECTIONS | Number of Files Under Construction | Number of HDFS files that are still being written. |
| PC Client Connections | Number of open RPC connections from clients on NameNode(s). | |
| TOTAL FILE OPERATIONS & CAPACITY USED | Total File Operations | Total number of operations on HDFS files, including file creation/deletion/rename/truncation, directory/file/block information retrieval, and snapshot related operations. |
| Capacity Used | CapacityTotalGB shows total HDFS storage capacity, in GB. CapacityUsedGB indicates total used HDFS storage capacity, in GB. | |
| RPC CLIENT PORT SLOW CALLS & HDFS TOTAL LOAD | RPC Client Port Slow Calls | Number of slow RPC requests on NameNode. A "slow" RPC request is one that takes more time to complete than 99.7% of other requests. |
| HDFS Total Load | Total number of connections on all the DataNodes sending/receiving data. | |
| ADD BLOCK STATUS | Add Block Time | The average time (in ms) serving addBlock RPC request on NameNode(s). |
| Add Block Num Ops | The rate of addBlock RPC requests on NameNode(s). |