Adjusting Cluster Node Resource Configurations

Scenario

The default memory size and disk overflow path of HetuEngine are not the best. You need to adjust node resources in the cluster based on the actual service and server configuration of the cluster to achieve the optimal performance.

Procedure

1. Log in to FusionInsight Manager.
2. Choose Cluster > Services > HetuEngine > Configurations > All Configurations and adjust the cluster node resource parameters by referring to Table 1.

   Table 1 Parameters for configuring cluster node resources

   Parameter	Default Value	Recommended Value	Description	Parameter File
   yarn.hetuserver.engine.coordinator.memory	5120	At least 2 GB less than that of yarn.scheduler.maximum-allocation-mb	Memory size used by a Coordinator node	application.properties
   yarn.hetuserver.engine.coordinator.number-of-containers	2	2	Number of Coordinator nodes	application.properties
   yarn.hetuserver.engine.coordinator.number-of-cpus	1	At least two vCores less than yarn.scheduler.maximum-allocation-vcores	CPU vCores used by a Coordinator node	application.properties
   yarn.hetuserver.engine.worker.memory	10240	At least 2 GB less than that of yarn.scheduler.maximum-allocation-mb	Memory size used by a worker node	application.properties
   yarn.hetuserver.engine.worker.number-of-containers	2	Adjusted based on application requirements	Number of worker nodes	application.properties
   yarn.hetuserver.engine.worker.number-of-cpus	1	At least two vCores less than yarn.scheduler.maximum-allocation-vcores	CPU vCores used by a Worker node	application.properties
   Xmx size in the extraJavaOptions parameter	8 GB	Memory size used by a worker node x 0.8	Maximum available memory of the worker JVM process	worker.jvm.config
   query.max-memory-per-node	5 GB	Worker JVM x 0.7	Maximum available memory of a Query node	worker.config.properties
   query.max-total-memory-per-node	5 GB	Worker JVM x 0.7	Maximum available memory of a Query + System node	worker.config.properties
   memory.heap-headroom-per-node	3 GB	Worker JVM x 0.3	Maximum available memory of a system heap node	worker.config.properties
   Xmx size in the extraJavaOptions parameter	4 GB	Memory size used by a Coordinator node x 0.8	Maximum available memory of the Coordinator JVM process	coordinator.jvm.config
   query.max-memory-per-node	3 GB	Coordinator JVM x 0.7	Maximum memory that can be used for node query	coordinator.config.properties
   query.max-total-memory-per-node	3 GB	Coordinator JVM x 0.7	Maximum available memory of a Query + System node	coordinator.config.properties
   memory.heap-headroom-per-node	1 GB	Coordinator JVM x 0.3	Maximum available memory of a system heap node	coordinator.config.properties
   query.max-memory	7 GB	Sum(query.max-memory-per-node) x 0.7	Maximum available memory of a Query cluster	worker.config.properties/coordinator.config.properties
   spiller-spill-path	CONTAINER_ROOT_PATH/tmp/hetuserver/hetuserver-sqlengine/	One or more independent SSDs	Disk output file path	worker.config.properties/coordinator.config.properties
   max-spill-per-node	10 GB	Sum(Available space of each node) x 50%	Available disk space for storing output files of all queries on a node	worker.config.properties/coordinator.config.properties
   query-max-spill-per-node	10 GB	80% of the available disk space on a node	Available disk space for storing output files of a query on a node	worker.config.properties/coordinator.config.properties

3. Click Save.
4. Choose Cluster > Services > HetuEngine > More > Restart Service to restart the HetuEngine service for the parameters to take effect.