[MESOS-3765] Make offer size adjustable (granularity)

• Type: Improvement
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Component/s: allocation
• Assignee: Unassigned
• Reporter: Alex R
• Created: 20/Oct/15 11:44
• Updated: 19/May/18 01:25

Description

The built-in allocator performs "coarse-grained" allocation, meaning that it always allocates the entire remaining agent resources to a single framework. This may heavily impact allocation fairness in some cases, for example in presence of numerous greedy frameworks and a small number of powerful agents.

A possible solution would be to allow operators explicitly specify granularity via allocator flags. While this can be tricky for non-standard resources, it's pretty straightforward for cpus and mem.

Issue Links

• is related to: MESOS-7132 Fair share can be exceeded due to coarse-grained offer technique.
• is related to: MESOS-8939 Allow frameworks to specify fine-grained demand to Mesos
• links to: Design Doc