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From Meng Zhu <>
Subject Re: Review Request 68346: Fixed a backoff overflow bug in scheduler authentication retry logic.
Date Thu, 16 Aug 2018 21:03:12 GMT

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(Updated Aug. 16, 2018, 2:03 p.m.)

Review request for mesos, Benjamin Mahler and Gastón Kleiman.


Added flag description about max timeout.

Bugs: MESOS-9147

Repository: mesos


This patch fixed the backoff time calculation
overflow bug described in MESOS-9147.

The old approach times out an authentication request after
`flags.authentication_timeout` and then retries after some
backoff time. This is not optimal because, if the scheduler
is going to backoff some time before retry, we might as well
wait that long for the previous authentication request
(instead of timeout early).

This patch combines the authentication timeout and
authentication retry backoff interval into a single
wait time interval. Now scheduler will timeout the previous
authentication request after the wait time interval and
then immediately retry.

Diffs (updated)

  src/sched/constants.hpp 9edb25b38ba8e7e1dbbb4ce4c957bb6bd9f4af81 
  src/sched/flags.hpp 2492665d44c424ff9f4f73c796520ebc51abbdff 
  src/sched/sched.cpp 4de76225c73c9c17904512f5a72303d93ec915a7 




make check


Meng Zhu

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