Review Request: Updated cgroup freezer to retry after failed attempts (rather than just waiting indefinitely).

[Benjamin Hindman]

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https://reviews.apache.org/r/7203/
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Review request for mesos, Vinod Kone, Brian Wickman, and Jie Yu.


Description
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Diffs
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  src/linux/cgroups.cpp 4efd06e 

Diff: https://reviews.apache.org/r/7203/diff/


Testing
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Thanks,

Benjamin Hindman