Cloudera Manager - how to view arcengine memory usage across the cluster

Cloudera Manager provides various service metrics that can be graphed over time.

One useful metric for the Arcadia service is the resident memory for the analytics engine.

Within the chart builder, you can enter the following query:
select mem_rss where roleType=ARCENGINE

This will plot over time the resident memory usage for each arcengine daemon on each host. In the below example a stacked area chart quickly shows the total memory usage across four node cluster with a peak of ~20GB.

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We can do the same for other components like the Catalog service:

select mem_rss, mem_virtual, mem_swap where roleType='ARCENGINE_CATALOG’