Linux Control Groups (cgroups)
Cloudera Manager can use Linux Control Groups (cgroups) to manage cluster resources.
Cloudera Manager supports the Linux control groups (cgroups) kernel feature. With cgroups, administrators can impose per-resource restrictions and limits on services and roles. This provides the ability to allocate resources using cgroups to enable isolation of compute frameworks from one another. You configure resource allocations by setting Service configuration properties for cluster services and roles.
If you have configured cgroups in the Linux environment for your cluster hosts, you can choose to use those custom cgroups instead of the default cgroup configurations provided by Cloudera Manager. You cannot mix these Cloudera Manager-managed cgroups with custom cgroups managed in your Linux environment.