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(Updated March 9, 2017, 4:44 p.m.) Review request for mesos and Michael Park. Changes ------- Introduce `QuotaTree`, other fixes. Repository: mesos Description (updated) ------- The quota'd resources for a nested role are "included" within the quota'd resources for that role's parent. Hence, the quota of a node must always be greater than or equal to the sum of the quota'd resources of that role's children. When creating and removing quota, we must ensure that this invariant is not violated. When computing the cluster capacity heuristic, we must ensure that we do not "double-count" quota'd resources: e.g., if the cluster has a total capacity of 100 CPUs, role "x" has a quota guarantee of 80 CPUs, and role "x/y" has a quota guarantee of 40 CPUs, this does NOT violate the cluster capacity heuristic. Diffs (updated) ----- src/master/quota_handler.cpp ce1f0644a56e85a99d8c3742d00940a1bfae3be3 src/tests/hierarchical_allocator_tests.cpp cdf1f15b7802439b28405ca8f6634ce83e886630 src/tests/master_quota_tests.cpp e109656492bc5ac65e398b6b61e7321072b162d3 Diff: https://reviews.apache.org/r/57167/diff/2/ Changes: https://reviews.apache.org/r/57167/diff/1-2/ Testing ------- `make check` Thanks, Neil Conway
