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From "Alexey Kuznetsov (JIRA)" <j...@apache.org>
Subject [jira] [Closed] (IGNITE-453) ScalaPiCalculationExample results actualization
Date Mon, 16 Mar 2015 08:49:38 GMT

     [ https://issues.apache.org/jira/browse/IGNITE-453?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Alexey Kuznetsov closed IGNITE-453.
-----------------------------------
    Assignee:     (was: Alexey Kuznetsov)

> ScalaPiCalculationExample results actualization
> -----------------------------------------------
>
>                 Key: IGNITE-453
>                 URL: https://issues.apache.org/jira/browse/IGNITE-453
>             Project: Ignite
>          Issue Type: Task
>          Components: general
>    Affects Versions: sprint-1
>         Environment: Ubuntu 14.04, Ignite ver. 1.0.0-RC1#20150217-sha1:16ef8eac
>            Reporter: Vasilisa Sidorova
>            Priority: Minor
>             Fix For: sprint-2
>
>         Attachments: #_IGNITE-453_Scalar_test_as_reflection_of_Java_test.patch
>
>
> ---------------------------------------------
> STEPS FOR REPRODUCE
> ---------------------------------------------
> 1. Run ScalaPiCalculationExample
> 2. Remember the result
> 3. Run one Compute Node
> 4. Run ScalaPiCalculationExample
> 5. Remember the result
> 6. Stop node from step 3
> 7. Run  4 compute nodes (for example, 2 from command line, and 2 from Idea IDE)
> 8. Run ScalaPiCalculationExample
> 9. Compare results from 2, 5 & 9 steps 
> ---------------------------------------------
> ACTUAL RESULT
> ---------------------------------------------
> The results are different beginning from the eleventh decimal place:
> Pi estimate: 3.141592653590042 - no one Compute Node is started
> Pi estimate: 3.141592653589823 - one Compute Node is started
> Pi estimate: 3.141592653589794 - four Compute Node are started
> Please, clarify is this bug or feature? 
> ---------------------------------------------
> EXPECTED RESULT
> ---------------------------------------------
> The results aren't depended from number of started nodes 
> ---------------------------------------------
> ADDITIONAL INFO
> ---------------------------------------------
> Is also reproducible for GG 6.6.3-p1 (ver. 6.6.3-p1-ent#20150228-sha1:ece6cbbd) - with
the same values of Pi



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