Allocating Memory for Nodes

When you run on a node, warden allocates memory for the operating system, mfs service, MapR Hadoop services, and applications using the settings in the warden.conf and warden.<servicename>.conf file.

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

  1. Operating system
  2. mfs service
  3. MapR Hadoop services
  4. Applications, such as YARN applications
  5. If the node only runs MapR Filesystem, NFS, and gateway, then 85% of all memory is allocated to MapR Filesystem
Note: In general, modify the settings in the warden files only under certain circumstances. If you modify the values in warden.conf or a warden.<servicename>.conf file, you must restart warden. Otherwise, updated parameters will not be used to allocate resources.