[jira] [Created] (MESOS-3552) Check failed: result.cpus() == cpus() && result.mem() == mem() && result.disk() == disk() && result.ports() == ports()

["Mandeep Chadha (JIRA)" <ji...@apache.org>]

Mandeep Chadha created MESOS-3552:
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             Summary: Check failed: result.cpus() == cpus() && result.mem() == mem() && result.disk() == disk() && result.ports() == ports() 
                 Key: MESOS-3552
                 URL: https://issues.apache.org/jira/browse/MESOS-3552
             Project: Mesos
          Issue Type: Bug
          Components: master
    Affects Versions: 0.24.1
            Reporter: Mandeep Chadha
            Assignee: Mandeep Chadha



result.cpus() == cpus() check is failing due to ( double == double ) comparison problem. 


Root Cause : 

Framework requested 0.1 cpu reservation for the first task. So far so good. Next Reserve operation — lead to double operations resulting in following double values :

 results.cpus() : 23.9999999999999964472863211995 cpus() : 24

And the check ( result.cpus() == cpus() ) failed. 

 The double arithmetic operations caused results.cpus() value to be :  23.9999999999999964472863211995 and hence ( 23.9999999999999964472863211995 == 24 ) failed.






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