YARN NodeManagers
Metrics to see status of YARN NodeManagers on the YARN cluster.
| Row | Metrics | Description |
|---|---|---|
| NUM CONTAINERS | Containers Running | Current number of running containers. |
| Containers Failed | Accumulated number of failed containers. | |
| Containers Killed | Accumulated number of killed containers. | |
| Containers Completed | Accumulated number of completed containers. | |
| MEMORY UTILIZATION | Memory Available | Available memory for allocating containers on this node. |
| Used Memory | Used memory by containers on this node. | |
| DISK UTILIZATION | Disk Utilization for Good Log Dirs | Disk utilization percentage across all good log directories. |
| Disk Utilization for Good Local Dirs | Disk utilization percentage across all good local directories. | |
| Bad Log Dirs | Number of bad log directories. | |
| Bad Local Dirs | Number of bad local directories. | |
| AVE CONTAINER LAUNCH DELAY | Ave Container Launch Delay | Average time taken for a NM to launch a container. |
| RPC METRICS | RPC Avg Processing Time | Average time for processing a RPC call. |
| RPC Avg Queue Time | Average time for queuing a PRC call. | |
| RPC Call Queue Length | The length of the RPC call queue. | |
| RPC Slow Calls | Number of slow RPC calls. | |
| JVM METRICS | Heap Mem Usage | Current heap memory usage. |
| NonHeap Mem Usage | Current non-heap memory usage. | |
| GC Count | Accumulated GC count over time. | |
| GC Time | Accumulated GC time over time. | |
| LOG4J METRICS | LOG ERROR | Number of ERROR logs. |
| LOG FATAL | Number of FATAL logs. |