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  1. Ignite
  2. IGNITE-453

ScalaPiCalculationExample results actualization

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Details

    • Task
    • Status: Closed
    • Minor
    • Resolution: Fixed
    • sprint-1
    • sprint-2
    • general
    • None
    • Ubuntu 14.04, Ignite ver. 1.0.0-RC1#20150217-sha1:16ef8eac

    Description

      ---------------------------------------------
      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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            Unassigned Unassigned
            vsidorova Vasilisa Sidorova
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            Dates

              Created:
              Updated:
              Resolved: