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From Benjamin Bannier <>
Subject Re: Review Request 62655: Made 'UpdateSlaveMessage' a union of possible updates.
Date Mon, 02 Oct 2017 16:53:15 GMT

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(Updated Oct. 2, 2017, 6:53 p.m.)

Review request for mesos, Jie Yu and Jan Schlicht.


Changed handling of updates.

If only a `total` is sent we now preserve the previous `oversubscribed`.

Repository: mesos


The 'UpdateSlaveMessage' could either transport an update to an
agent's total, or to its oversubscribed resources. In certain
scenarios this required the agent to send two messages where before
one was sufficient. When talking to a master which did not understand
the 'type' field this would have let the master to rescind all offers
for revocable resources from that agent.

This patch changes the message to be a union of possible updates,
i.e., it is now possible to send updates to both the total and the
oversubscribed resources simultaneously on agent registration and
reregistration without the master rescinding offers for revocable
resources on the agent.

Diffs (updated)

  src/master/master.cpp b40621ee3870b1968ab1b05dd0f41a489f4db00e 
  src/messages/messages.proto dc4e19c08d671743f08223dcdf1dbc336b3940bd 
  src/slave/slave.cpp bf85baf8b7f7ebf52afa25214e71278f18dc9b30 
  src/tests/oversubscription_tests.cpp 02b10d6689dd6f01510cd2d5db2bb76b4b190eca 




`make check`; also tested as part of


Benjamin Bannier

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