Benjamin Mahler created MESOS-9915:
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Summary: Store a role tree in the master.
Key: MESOS-9915
URL: https://issues.apache.org/jira/browse/MESOS-9915
Project: Mesos
Issue Type: Improvement
Components: master
Reporter: Benjamin Mahler
Currently, both the master and allocator track known roles in maps (note
however that the master does not currently have complete tracking of known
roles).
These Role structs track some information about roles, but currently do not
track information hierarchically. As a result, when per-role resource
quantities were exposed in the API, we had to add code outside of the master's
Role struct to perform the hierarchical aggregation.
It would be nice if the master (and allocator) had a complete Role tree stored
and updated in an event driven manner to obtain information cheaply at any
point in time. Ideally this role tree abstraction can be shared (e.g. with the
allocator) which may not be trivial since the information tracked might differ.
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