Hive LLAP Heatmap

This dashboard enables you to identify the hotspots in the cluster in terms of executors and cache.

The heat map dashboard shows all the nodes that are running LLAP daemons and includes a percentage summary for available executors and cache. The values in the table are color coded based on threshold: if the threshold is more than 50%, the color is green; between 20% and 50%, the color is yellow; and less than 20%, the color is red.

Table 1. Hive LLAP Heatmap metrics descriptions
Row	Metrics	Description
HEAT MAPS	Remaining Cache Capacity	Shows the percentage of cache capacity remaining across the nodes. For example, if the grid is green, the cache is being under utilized. If the grid is red, there is high utilization of cache.
	Remaining Cache Capacity	Same as above (Remaining Cache Capacity), but shows the cache hit ratio.
	Executor Free Slots	Shows the percentage of executor free slots that are available on each nodes.