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  1. Hive
  2. HIVE-16602

Implement shared scans with Tez

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    Details

    • Type: New Feature
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 3.0.0
    • Fix Version/s: 3.0.0
    • Component/s: Physical Optimizer
    • Labels:
      None
    • Target Version/s:

      Description

      Given a query plan, the goal is to identify scans on input tables that can be merged so the data is read only once. Optimization will be carried out at the physical level.

      In the longer term, identification of equivalent expressions and reutilization of intermediary results should be done at the logical layer via Spool operator.

        Attachments

        1. HIVE-16602.patch
          111 kB
          Jesus Camacho Rodriguez
        2. HIVE-16602.04.patch
          1.66 MB
          Jesus Camacho Rodriguez
        3. HIVE-16602.03.patch
          1.47 MB
          Jesus Camacho Rodriguez
        4. HIVE-16602.02.patch
          1.86 MB
          Jesus Camacho Rodriguez
        5. HIVE-16602.01.patch
          1.62 MB
          Jesus Camacho Rodriguez

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              • Assignee:
                jcamachorodriguez Jesus Camacho Rodriguez
                Reporter:
                jcamachorodriguez Jesus Camacho Rodriguez
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                Dates

                • Created:
                  Updated:
                  Resolved: