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src/master/http.cpp (lines 2029 - 2030)
<https://reviews.apache.org/r/44258/#comment184057>

    s/due to/since/
    s/trigger inverse/trigger an inverse/


- Joseph Wu


On March 4, 2016, 4:34 p.m., Guangya Liu wrote:
> 
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> This is an automatically generated e-mail. To reply, visit:
> https://reviews.apache.org/r/44258/
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> 
> (Updated March 4, 2016, 4:34 p.m.)
> 
> 
> Review request for mesos, Anand Mazumdar, Joris Van Remoortere, and Joseph Wu.
> 
> 
> Bugs: MESOS-4831
>     https://issues.apache.org/jira/browse/MESOS-4831
> 
> 
> Repository: mesos
> 
> 
> Description
> -------
> 
> There is a bug when setting host maintain with http endpoint: 
> https://github.com/apache/mesos/blob/master/src/master/http.cpp#L1987-L2021
> The logic is as this:
> 1) Get all host list from maintain window and put it to updated hashmap.
> 2) If the machine in was in updated was also in master->machines, call master 
> updateUnavailability to trigger recoverResources, updateUnavailability etc in 
> allocator
> 3) Otherwise, clear the unavailabity time window for the machine.
> 4) Update each new machines in updated to call master updateUnavailability
> 
> But the logic in step 4) is getting all machines from the schedule windows 
> but not the machines that is new to the cluster, this caused master get two 
> updateUnavailability calls for a machine in the updated hashmap.
> 
> The fix is filter machines in updated hashmap when handling new machines.
> 
> 
> Diffs
> -----
> 
>   src/master/http.cpp 8276baa538eb4d2aaf54cc1aa516bffaadacc4dd 
>   src/tests/master_maintenance_tests.cpp 
> 3faa8136cf57276295553910319480028f433e4c 
> 
> Diff: https://reviews.apache.org/r/44258/diff/
> 
> 
> Testing
> -------
> 
> make
> make check
>  ./bin/mesos-tests.sh --gtest_filter="MasterMaintenanceTest.*" --verbose
> 
> 
> Thanks,
> 
> Guangya Liu
> 
>

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