Review Request 13746: Fixed a bug that caused Master::~Master() to send messages to the schedulers and slaves. It was not the way Masters exit in production.

[Jiang Yan Xu]

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Review request for mesos, Benjamin Hindman, Ben Mahler, Ian Downes, Jie Yu, and 
Vinod Kone.


Bugs: MESOS-655
    https://issues.apache.org/jira/browse/MESOS-655


Repository: mesos-git


Description
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- In production, Masters exit by either LOG(FATAL) or exit().
- Also fixed tests that incorrectly relied on the messages sent by 
Master::~Master().


Diffs
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  src/master/master.cpp d53b8bb97da45834790cca6e04b70b969a8d3453 
  src/tests/allocator_zookeeper_tests.cpp 
b84fa86274c80cc85e2b2eeadd6eb08da34433db 

Diff: https://reviews.apache.org/r/13746/diff/


Testing
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make check on Linux and OSX


Thanks,

Jiang Yan Xu