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  1. Apache Drill
  2. DRILL-2327

Upper bound on join's row_count_estimate_factor should be increased to handle expanding joins

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    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 0.8.0
    • Labels:
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      Description

      The current bounds for planner.join.row_count_estimate_factor is between 0 to 100. The default value is 1.0. This parameter determines the estimated output cardinality of a join. For hugely expanding joins, this is inadequate and we need to allow substantially larger upper bound.

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            • Assignee:
              amansinha100 Aman Sinha
              Reporter:
              amansinha100 Aman Sinha
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