Task manager number mismatch container number on mesos

[Renjie Liu]

Hi, all:
We are using flink 1.2.0 on mesos. We found the number of task managers
mismatches with container number occasinally. That's the mesos container
still exists but it can't be found on the monitor web page of flink master.
This case doesn't happen frequently and it's hard to reproduce.
-- 
Liu, Renjie
Software Engineer, MVAD