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From "Vasilisa Sidorova (JIRA)" <j...@apache.org>
Subject [jira] [Created] (IGNITE-453) ScalaPiCalculationExample results actualization
Date Tue, 10 Mar 2015 14:54:38 GMT
Vasilisa Sidorova created IGNITE-453:
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             Summary: 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
            Assignee: Sisko Vasiliy
            Priority: Minor
             Fix For: sprint-2


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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 
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ACTUAL RESULT
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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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