Review Request 20934: Ignored the log write request to a position if it has already been learned.

[Jie Yu]

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https://reviews.apache.org/r/20934/
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Review request for mesos, Benjamin Hindman, Ben Mahler, and Vinod Kone.


Bugs: MESOS-1271
    https://issues.apache.org/jira/browse/MESOS-1271


Repository: mesos-git


Description
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See summary.


Diffs
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  src/log/replica.cpp d566b24 

Diff: https://reviews.apache.org/r/20934/diff/


Testing
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make check


Thanks,

Jie Yu