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  1. Kylin
  2. KYLIN-1453

cuboid sharding based on specific column

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    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: v1.5.2
    • Component/s: None
    • Labels:
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      Description

      currently cuboid sharding is based on the hash value of the row key. If we allow computing hash value on a specific column C, then we're actually partitioning the data w.r.t C. The benefit is that if we later a query with filter like "where C = 'xyz'", kylin can skip shards. Also for filter like "where C IN

      {many candidates}

      ", kylin can prune candidates sent to different shards

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              • Assignee:
                mahongbin Hongbin Ma
                Reporter:
                mahongbin Hongbin Ma
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                • Created:
                  Updated:
                  Resolved: