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  1. Hive
  2. HIVE-9443

ORC PPD - fix fuzzy case evaluation of IS_NULL

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Details

    • Bug
    • Status: Resolved
    • Major
    • Resolution: Fixed
    • 0.15.0
    • 1.1.0
    • File Formats
    • None
    • Fix ORC IS_NULL predicate for columns with some nulls

    Description

      CLEAR LIBRARY CACHE

      ORC PPD returns IS_NULL wrong for the fuzz case of some-nulls.

      The code-flow in effect should be

      if (min == null) {
  // all nulls
  return YES;
} else {
  if (hasNull == true) {
     // some nulls
     return YES_NO; //maybe
  }
  // no nulls
  return NO;
}

      Attachments

        1. HIVE-9443.3.patch
          3 kB
          Gopal Vijayaraghavan
        2. HIVE-9443.2.patch
          3 kB
          Gopal Vijayaraghavan
        3. HIVE-9443.1.patch
          0.8 kB
          Gopal Vijayaraghavan

        Issue Links

          is related to

          Improvement - An improvement or enhancement to an existing feature or task. HIVE-4639 Add has null flag to ORC internal index

          • Major - Major loss of function.
          • Resolved

          Activity

            People

              gopalv Gopal Vijayaraghavan
              gopalv Gopal Vijayaraghavan
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              Dates

                Created:
                Updated:
                Resolved: