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From "Michael Park" <>
Subject Re: Review Request 35702: [WIP] Added /reserve HTTP endpoint to the master.
Date Wed, 24 Jun 2015 15:39:13 GMT

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(Updated June 24, 2015, 3:39 p.m.)

Review request for mesos, Adam B, Benjamin Hindman, Ben Mahler, Jie Yu, Joris Van Remoortere,
and Vinod Kone.

Bugs: MESOS-2600

Repository: mesos

Description (updated)

Work currently in progress, incorporating feedback. Please hold off on reviewing this patch
for now.

(1) Q: I've added `updateAvailable` to the allocator API. Is this necessary or is there maybe
a better way?
    A: I think we shold be able to generalize `updateSlave` to support not only `oversubscription`,
but `reserve`, `unreserve`, `create` and `destroy`.
(2) Q: To determine the amount of available resources, I used: `available = total - (offered
+ used)`.
       Is this still correct with oversubscription in the picture?
    A: I think this decision needs to be made in the allocator.
(3) Q: I'm creating an `Offer.Operation` to perform the necessary updates in the allocator
and such.
       Feels weird to use an "offer" operation when there's not an actual offer. Is this fine
for now?
    A: I think we'll want to introduce something like `Resource.Operation`.


  include/mesos/master/allocator.hpp 92de1af414321281b00eaa6f129e5e3e2c849448 
  src/ dfebd2b14c9cb45c437509809fdf5ac3b0c8838c 
  src/master/allocator/mesos/allocator.hpp 6cfa04650d91a80211cfbc0809236f9438926c78 
  src/master/allocator/mesos/hierarchical.hpp 7097482fc0adad1c177c15c35edd51c10754f89c 
  src/master/http.cpp b893013ddd052cb58c520ac0328f4a5f0fed862e 
  src/master/master.hpp af83d3e82d2c161b3cc4583e78a8cbbd2f9a4064 
  src/master/master.cpp 0135c155181546d3cb43e9e05bb874af846d928d 
  src/master/validation.hpp 469d6f56c3de28a34177124aae81ce24cb4ad160 
  src/master/validation.cpp 9d128aa1b349b018b8e4a1916434d848761ca051 
  src/tests/mesos.hpp 9157ac079808d2686592e54ea26a26e6a0825ed3 
  src/tests/reserve_tests.cpp PRE-CREATION 



Added `src/tests/reserve_tests.cpp`.


Michael Park

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