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From Benno Evers <>
Subject Re: Review Request 65571: Handle 'None' passed from the MasterDetector in 'Master::detect()'.
Date Tue, 13 Feb 2018 20:05:05 GMT

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(Updated Feb. 13, 2018, 8:05 p.m.)

Review request for mesos, Andrei Budnik and Vinod Kone.

Bugs: MESOS-8550

Repository: mesos


The function `MasterDetector::detect()` returns a value of type
`Future<Option<MasterInfo>>`, which, according to its documentation,
can be `None` if an election occured and no master is elected.

However, the code in `Master::detected()` was only handling the
cases of a failed future or a valid `MasterInfo` object.

Diffs (updated)

  src/master/master.cpp d7d22866f7a4eb87bd8949efafc97e828e7d4b94 
  src/tests/cluster.hpp ad2b80e658d2f8afcefe9969d62cd33f0c475ce9 
  src/tests/master_tests.cpp 28663c7a77096943949350abb3d13f9c04505f5b 






Benno Evers

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