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From "Mesos ReviewBot" <revi...@mesos.apache.org>
Subject Re: Review Request 38003: MESOS-3351 (duplicated slave id in master after master failover)
Date Thu, 17 Sep 2015 16:03:40 GMT

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This is an automatically generated e-mail. To reply, visit:
https://reviews.apache.org/r/38003/#review99394
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Patch looks great!

Reviews applied: [38003]

All tests passed.

- Mesos ReviewBot


On Sept. 17, 2015, 3:07 p.m., Klaus Ma wrote:
> 
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> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/38003/
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> 
> (Updated Sept. 17, 2015, 3:07 p.m.)
> 
> 
> Review request for mesos, Ben Mahler, Jie Yu, and Vinod Kone.
> 
> 
> Bugs: MESOS-3351
>     https://issues.apache.org/jira/browse/MESOS-3351
> 
> 
> Repository: mesos
> 
> 
> Description
> -------
> 
> __Phenomenon:__
> In some race condition, the slave was shutdown when after master failover.
> 
> __Root Cause:__
> The slave was shutdown because of duplicated SlavID: in master, the SlaveID is genereated
by masterInfo.id + "-S" + nextSlaveId; when master failover, nextSlaveId was reset to 0 and
masterInfo.id (generated by date + ip + port + pid) maybe un-changed which lead to duplicated
SlaveID. 
> 
> __Solution/Fix:__
> Generate masterInfo.id by UUID instead of "date + ip + port + pid".
> 
> 
> Diffs
> -----
> 
>   src/master/master.cpp 1c4e7af 
>   src/tests/master_tests.cpp 06d74c3 
> 
> Diff: https://reviews.apache.org/r/38003/diff/
> 
> 
> Testing
> -------
> 
> make
> make check
> 
> 
> Thanks,
> 
> Klaus Ma
> 
>


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