Review Request 26815: Added a advisory message reminding the user to initialize the log.

[Jie Yu]

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https://reviews.apache.org/r/26815/
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Review request for mesos, Ben Mahler, Vinod Kone, and Bill Farner.


Bugs: MESOS-1703
    https://issues.apache.org/jira/browse/MESOS-1703


Repository: mesos-git


Description
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See ticket for details.


Diffs
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  src/log/recover.cpp 2013e9193fc53c769ec6815d769cdf8a565a8c5c 

Diff: https://reviews.apache.org/r/26815/diff/


Testing
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make check


Thanks,

Jie Yu