Architecture of cluster resource manager

The process of resource management is complex. It is based on multiple parameters which are highly dynamic in nature. To perform resource balancing, the resource manager has to know about all the active services and the resources consumed by each of the services at this point of time. It should also be aware of the actual capacity of every node in the cluster in terms of memory, CPU, and disk space, and the aggregate amount of resources available in the cluster. The resources consumed by a service can change over time, depending on the load it is handling. This also needs to be accounted for before making a decision to move a service from one node to another. To add to the complexity, the cluster resources ...

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