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From Benjamin Bannier <bbann...@apache.org>
Subject Re: Review Request 61183: Triggered 'UpdateSlaveMessage' when 'ResourceProviderManager' updates.
Date Mon, 25 Sep 2017 10:28:24 GMT

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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/61183/
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(Updated Sept. 25, 2017, 12:28 p.m.)


Review request for mesos, Jie Yu and Jan Schlicht.


Repository: mesos


Description
-------

The agent's resource provider manager sends a
'ResourceProviderMessage' when its managed resources change. This
commit adds handling in the agent so that an 'UpdateSlaveMessage' is
sent to the master to update the total resource available on the
agent.

In order to provide push-like handling of the resource provider
manager's message queue, we chain recursive calls to the handler for
continuous processing. Initially, processing is kicked off from
'Slave::initialize'. In this simple implementation we e.g., provide no
direct way to stop processing of messages, yet, but it can be achieved
by e.g., replacing the manager with a new instance (this would also
require updating routes).

Since the agent can only send an 'UpdateSlaveMessage' when it is
registered with a master, a simple back-off of 5 s is implemented which
will defer processing of a ready message should the agent not yet have
registered.

To facilitate logging we add a stringification function for
'ResourceProviderMessage's.

This patch also adjusts a number of tests to no expect two
'UpdateSlaveMessage's.


Diffs (updated)
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  src/resource_provider/message.hpp 3c7c3f2baeb726e04edd6ffbb9784699d7afe521 
  src/slave/slave.hpp aea1e948209c7c8945665915bc2f6d8eb47814ef 
  src/slave/slave.cpp 75e2e25c438637e2b1731f9fd01b6fe297687c50 
  src/tests/oversubscription_tests.cpp 02b10d6689dd6f01510cd2d5db2bb76b4b190eca 
  src/tests/slave_tests.cpp e9bcfefd52e1e99a7a5877b2e7c30af958ca1723 


Diff: https://reviews.apache.org/r/61183/diff/12/

Changes: https://reviews.apache.org/r/61183/diff/11-12/


Testing
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Tested on a number of platforms on internal CI.


Thanks,

Benjamin Bannier


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