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
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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?
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EXPECTED RESULT
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The results aren't depended from number of started nodes
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ADDITIONAL INFO
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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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