Review Request: Changed the ZooKeeper master detector to "time out" a session for instances that are being used to contend for leadership (and send a NoMasterDetectedMessage and expire the session after a reconnect does occur).

[Benjamin Hindman]

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https://reviews.apache.org/r/7295/
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Review request for mesos, John Sirois, Vinod Kone, and Ben Mahler.


Description
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See summary (7 of 7).


Diffs
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  src/detector/detector.cpp 0246846 
  third_party/libprocess/include/process/delay.hpp cb2fa9a 
  third_party/libprocess/include/process/timer.hpp 333a806 
  third_party/libprocess/src/process.cpp fde7154 

Diff: https://reviews.apache.org/r/7295/diff/


Testing
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make check


Thanks,

Benjamin Hindman