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  1. IMPALA
  2. IMPALA-4810 DECIMAL datatype changes for Impala 2.9
  3. IMPALA-4821

DECIMAL AVG() result type

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Details

    • Sub-task
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • Impala 2.8.0
    • Impala 2.9.0
    • Backend
    • None

    Description

      Currently, the result type of AVG() is set to be the same as the input type. Instead, it should be related to the rule for divide of DECIMAL result type, since AVG() is essentially a divide of DECIMAL sum by the integral count. This will require probably some additional plumbing through the UDA interface in addition to the frontend work.

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          breaks

          Bug - A problem which impairs or prevents the functions of the product. IMPALA-5251 DecimalAvgFinalize() gets the wrong arg type

          • Blocker - Blocks development and/or testing work, production could not run
          • Resolved
          is blocked by

          Bug - A problem which impairs or prevents the functions of the product. IMPALA-4879 FunctionContext::GetArgType() returns wrong type in UDA Merge() and Finalize()

          • Major - Major loss of function.
          • Resolved

          Activity

            People

              kwho Michael Ho
              dhecht Daniel Hecht
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              Dates

                Created:
                Updated:
                Resolved: