Allocating Memory for Nodes

Describes how the Warden allocates memory for nodes.

When you run configure.sh on a node, Warden allocates memory for the operating system, mfs service, data-fabricHadoop services, and applications using the settings in the warden.conf and the warden.<servicename>.conf file.

Warden allocates memory to the following components in the following order:

Operating system
mfs service
Data Fabric Hadoop services
Applications, such as YARN applications
If the node only runs filesystem, NFS for the HPE Ezmeral Data Fabric, and gateway, then 85% of all memory is allocated to filesystem.

Note: In general, modify the settings in the warden files only under certain circumstances. If you modify the values in warden.conf or warden.<servicename>.conf file, you must restart Warden. Otherwise, updated parameters will not be used to allocate resources.