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From Benjamin Mahler <>
Subject Re: Review Request 71030: Added quota.consumed field to /roles endpoint.
Date Wed, 10 Jul 2019 01:19:20 GMT

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(Updated July 10, 2019, 1:19 a.m.)

Review request for mesos, Andrei Sekretenko and Meng Zhu.


- Renamed to quota.consumption, and always expose quota field.

Summary (updated)

Added quota.consumed field to /roles endpoint.

Bugs: MESOS-9871

Repository: mesos

Description (updated)

Per the previous commit that adds the consumed quota computation,
consumed quota is:

  Allocation + Unallocated Reservation ==
  Reservations + Unreserved Allocation

That is, reservations count towards quota regardless of whether
they're allocated. Allocation counts towards quota. Offered resources
*do not* count towards quota, this is to (1) provide stability of the
quota consumption metrics in the face of offers flowing in and out,
and (2) to ensure that we treat offers as rescindable and therefore
not yet "counting" towards quota. Also, if in the future schedulers
are offered more than their quota to improve their choices, counting
offered resources as consumed quota will be problematic.

Diffs (updated)

  src/master/readonly_handler.cpp 0d1e3dc19352863263c3e8992a63852c7f27225b 
  src/tests/role_tests.cpp bf5b3cba59d38eee41ed222d14bc8c928fcf2a79 




Added a test in a subsequent patch.


Benjamin Mahler

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