-----------------------------------------------------------
This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/57254/
-----------------------------------------------------------
(Updated March 11, 2017, 1:36 a.m.)
Review request for mesos, Benjamin Bannier, Benjamin Mahler, and Michael Park.
Changes
-------
Rebase, address review comments.
Repository: mesos
Description
-------
This commit replaces the sorter's flat list of clients with a tree of
client names; this tree represents the hierarchical relationship between
sorter clients. Each node in the tree contains an (ordered) list of
pointers to child nodes. The tree might contain nodes that do not
correspond directly to sorter clients. For example, adding clients "a/b"
and "c/d" results in the following tree:
root
-> a
-> b
-> c
-> d
The `sort` member function still only returns one result for each
(active) client in the sorter. This is implemented by ensuring that each
sorter client is associated with a leaf node in the tree. Note that it
is possible for a leaf node to be transformed into an internal node by a
subsequent insertion; to handle this case, we "implicitly" create an
extra child node, which maintains the invariant that each client has a
leaf node. For example, if the client "a/b/x" is added to the tree
above, the result is:
root
-> a
-> b
-> .
-> x
-> c
-> d
The "." leaf node holds the allocation that has been made to the "a/b"
client itself; the "a/b" node holds the sum of all the allocations that
have been made to the subtree rooted at "a/b", which also includes
"a/b/x".
Diffs (updated)
-----
src/master/allocator/sorter/drf/metrics.cpp
15aab32db5ca1a7a14080e9bbb7c65283be3ec20
src/master/allocator/sorter/drf/sorter.hpp
76329220e1115c1de7810fb69b943c78c078be59
src/master/allocator/sorter/drf/sorter.cpp
ed54680cecb637931fc344fbcf8fd3b14cc24295
src/master/allocator/sorter/sorter.hpp
b3029fcf7342406955760da53f1ae736769f308c
src/tests/hierarchical_allocator_tests.cpp
dce619ec49db480685deb1bf8f7faeebe02e25b5
src/tests/master_allocator_tests.cpp 0fb66e4255a71e9082f99a8bd202aec691a06939
src/tests/sorter_tests.cpp ec0636beb936d46a253d19322f2157abe95156b6
Diff: https://reviews.apache.org/r/57254/diff/5/
Changes: https://reviews.apache.org/r/57254/diff/4-5/
Testing
-------
Thanks,
Neil Conway
