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From "Benjamin Bannier (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MESOS-7197) Requesting tiny amount of CPU crashes master
Date Thu, 02 Mar 2017 21:07:45 GMT

    [ https://issues.apache.org/jira/browse/MESOS-7197?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15893019#comment-15893019
] 

Benjamin Bannier commented on MESOS-7197:
-----------------------------------------

Yes, with the same clang version even an unoptimized build causes us to run into a {{CHECK}}
failure with both test cases.
----

\[1\] clang version 5.0.0 (http://llvm.org/git/clang 60de4ba003932b44c77702815e0485d77e55c9c3)
(http://llvm.org/git/llvm 85f508cd9dba8a982471d98c4f649fb0d63f3451)
      Target: x86_64-apple-darwin16.4.0
      Thread model: posix
      InstalledDir: /Users/bbannier/src/llvm/P/bin


> Requesting tiny amount of CPU crashes master
> --------------------------------------------
>
>                 Key: MESOS-7197
>                 URL: https://issues.apache.org/jira/browse/MESOS-7197
>             Project: Mesos
>          Issue Type: Bug
>          Components: allocation
>    Affects Versions: 1.1.0, 1.2.0
>         Environment: Ubuntu 14.04, using Mesosphere PPA to install Mesos
>            Reporter: Bruce Merry
>            Assignee: Neil Conway
>            Priority: Critical
>
> If a task is submitted with a tiny CPU request e.g. 0.0004, then when it completes the
master crashes due to a CHECK failure:
> {noformat}
> F0302 10:48:26.654909 15391 sorter.cpp:291] Check failed: allocations[name].resources[slaveId].contains(resources)

> {noformat}
> I can reproduce this with the following command:
> {noformat}
> mesos-execute --command='sleep 5' --master=$MASTER --name=crashtest --resources='cpus:0.0004;mem:128'
> {noformat}
> If I replace 0.0004 with 0.001 the issue no longer occurs.



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