Tuning LLAP for Performance
To make sure that the LLAP service is performing as well as possible, you might need to tune the following properties in the /etc/hadoop/conf/yarn-site.xml file:
yarn.nodemanager.resource.memory-mb
yarn.scheduler.minimum-allocation-mb
yarn.scheduler.maximum-allocation-mb
For information about tuning these properties, see Determine HDP Memory Configuration Settings in this guide.
You can also tune performance for the LLAP service by monitoring the hive.tez.container.size property that is in the hive-site.xml configuration file. For more information about tuning this property, see the SQL Optimization and Planning Properties in the Apache Hive Performance Tuning Guide.
Finally, you can tune LLAP for performance by adding nodes to the cluster, which adds additional YARN NodeManagers.