Apache Ambari Operations
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YARN - NodeManagers

Metrics to see status of YARN NodeManagers on the YARN cluster.

RowMetrics

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.