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  1. IMPALA
  2. IMPALA-6429

Decimal division returns an incorrect result

    Details

    • Type: Bug
    • Status: Resolved
    • Priority: Blocker
    • Resolution: Fixed
    • Affects Version/s: Impala 2.11.0
    • Fix Version/s: Impala 3.0
    • Component/s: Backend
    • Labels:
    • Epic Color:
      ghx-label-5

      Description

      This bug was found by the decimal fuzzer in one of our exhaustive nigthly builds.

      Query:

      select cast(9269574547799442144750864826042582 as decimal(38,2)) / cast(-0.2475880078570760549798248447 as decimal(38,38))
      

      Result:

      -25071524537367060442348433289920.875272
      

      The expected results should be around:

      -37439513440208481766456680165938338.924
      

      I computed the expected result in Python. Even without a calculator, it should be obvious that the first digit of the expected result should be higher than 2.

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            • Assignee:
              tarasbob Taras Bobrovytsky
              Reporter:
              tarasbob Taras Bobrovytsky
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              Dates

              • Created:
                Updated:
                Resolved: