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From Benjamin Mahler <>
Subject Re: Review Request 68732: Cached weights in the sorters nodes.
Date Tue, 25 Sep 2018 00:22:15 GMT

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(Updated Sept. 25, 2018, 12:22 a.m.)

Review request for mesos, Gastón Kleiman and Meng Zhu.


Updated to handle the virtual leaf case.

Repository: mesos


This avoids making excessive map lookups each time we calculate the
share for a node in the tree. Now, when the weight is needed, the
value is cached. If the weight gets updated, we update the cached
value. This approach proved cleaner than trying to ensure freshly
constructed nodes have the right weight.

Diffs (updated)

  src/master/allocator/sorter/drf/sorter.hpp 2957a2ea4e6d8fe9cc661be1a42ab3e17a338769 
  src/master/allocator/sorter/drf/sorter.cpp a45f66ff0d77becb6f96f7ff4c288e4ab218e070 
  src/master/allocator/sorter/random/sorter.hpp 825c158322885d52803994c0a827a67aedd609f4 
  src/master/allocator/sorter/random/sorter.cpp fc47756927a6e45183713955e819e0640318f838 




make check


Benjamin Mahler

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