Memory Allocation for Nodes
When you run configure.sh
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:
- Operating system
mfs service
- MapR Hadoop services
- Jobs and Applications, such as MapReduce v1 or YARN applications
- If the node only runs MFS, NFS, and gateway, then 85% of all memory is allocated to MFS
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.
The following sections contain additional information about memory allocation: