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. |