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https://issues.apache.org/jira/browse/MESOS-3552?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15028035#comment-15028035
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Klaus Ma commented on MESOS-3552:
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[~marco-mesos], I create a EPIC (MESOS-4018) for float-point operation related
issues. The major task of that EPIC is to build float-point operation in
{{stout}}, e.g. {{almostEqual}}, {{CHECK_DOUBLE_EQ}}. So MESOS-1187 will use
{{almostEqual}} for Scalar check; this ticket (MESOS-3552) will use
{{CHECK_DOUBLE_EQ}}. Both tickets are sub-tasks of MESOS-4018.
Any more comments?
> CHECK failure due to floating point precision on reservation request
> --------------------------------------------------------------------
>
> Key: MESOS-3552
> URL: https://issues.apache.org/jira/browse/MESOS-3552
> Project: Mesos
> Issue Type: Task
> Components: master
> Reporter: Mandeep Chadha
> Assignee: Mandeep Chadha
> Labels: mesosphere, tech-debt
>
> 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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