Zhitao Li created MESOS-7566:
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Summary: Master crash due to failed check in DRFSorter::remove
Key: MESOS-7566
URL: https://issues.apache.org/jira/browse/MESOS-7566
Project: Mesos
Issue Type: Bug
Affects Versions: 1.1.1, 1.1.2
Reporter: Zhitao Li
Priority: Critical
A check in
[https://github.com/apache/mesos/blob/1.1.2/src/master/allocator/sorter/drf/sorter.cpp#L355
DRFSorter] is triggered occasionally in our cluster and crashes the master
leader.
I manually modified that check to print out the related variables, and the
following is a master log.
https://gist.github.com/zhitaoli/0662d9fe1f6d57de344951c05b536bad#file-gistfile1-txt
>From the log, it seems like the check was using an stale value of
>{{cpus(*){REV}:26}} while the new value was updated to {{cpus(*){REV}:25}},
>thus it crashed.
So far two verified occurrence of this bug are both observed near an
{{UNRESERVE}} operation (see lines above in the log).
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