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  1. Hive
  2. HIVE-5775 Introduce Cost Based Optimizer to Hive
  3. HIVE-7546

CBO: Pull partition and column stats regardless of hive conf settings

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Details

    • Sub-task
    • Status: Resolved
    • Major
    • Resolution: Fixed
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    Description

      Because of performance reasons we have flags to avoid loading certain stats when requested. That's fine for the join selection algo, but CBO needs these stats.

      This patch separates the two so that CBO can fetch the stats it needs and the regular stats annotation can be controlled via flags.

      Attachments

        1. HIVE-7546.1.patch
          2 kB
          Gunther Hagleitner

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            hagleitn Gunther Hagleitner
            hagleitn Gunther Hagleitner
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              Created:
              Updated:
              Resolved: