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  1. Tajo
  2. TAJO-1991

Tablespace::getVolume should take filter predication

    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 0.12.0, 0.11.1
    • Component/s: Storage
    • Labels:
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      Description

      Tablespace::getVolume plays a role to guess or compute exactly the table volume. This volume result is usually used for join optimization. But, currently Tablespace::getVolume just returns whole table volume. It may cause sub optimal join order, especially in partitioned tables or indexable tables like HBase.

      The main objective of this patch is to improve getVolume method to take filter predicates and return more reasonable volume sizes according to predicates.

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              • Assignee:
                hyunsik Hyunsik Choi
                Reporter:
                hyunsik Hyunsik Choi
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                  Updated:
                  Resolved: