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  1. Hive
  2. HIVE-4579

Create a SARG interface for RecordReaders

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Details

    • Improvement
    • Status: Closed
    • Major
    • Resolution: Fixed
    • None
    • 0.12.0
    • None
    • None

    Description

      I think we should create a SARG (http://en.wikipedia.org/wiki/Sargable) interface for RecordReaders. For a first pass, I'll create an API that uses the value stored in hive.io.filter.expr.serialized.

      The desire is to define an simpler interface that the direct AST expression that is provided by hive.io.filter.expr.serialized so that the code to evaluate expressions can be generalized instead of put inside a particular RecordReader.

      Attachments

        1. pushdown.pdf
          91 kB
          Owen O'Malley
        2. HIVE-4579.D11409.3.patch
          193 kB
          Phabricator
        3. HIVE-4579.D11409.2.patch
          192 kB
          Phabricator
        4. HIVE-4579.D11409.1.patch
          192 kB
          Phabricator
        5. HIVE-4579.4.patch
          194 kB
          Gunther Hagleitner
        6. h-4579.patch
          8 kB
          Owen O'Malley

        Issue Links

          blocks

          New Feature - A new feature of the product, which has yet to be developed. HIVE-4246 Implement predicate pushdown for ORC

          • Major - Major loss of function.
          • Closed
          is depended upon by

          Bug - A problem which impairs or prevents the functions of the product. HIVE-5057 Use SARG interface for storage handlers

          • Major - Major loss of function.
          • Open

          Activity

            People

              omalley Owen O'Malley
              omalley Owen O'Malley
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              Dates

                Created:
                Updated:
                Resolved: