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  1. IMPALA
  2. IMPALA-8771

Missing stats warning for complex type columns

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    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Minor
    • Resolution: Fixed
    • Affects Version/s: Impala 2.13.0, Impala 3.3.0
    • Fix Version/s: Impala 3.3.0
    • Component/s: Frontend
    • Labels:
    • Epic Color:
      ghx-label-9

      Description

      We currently don't support column stats for complex typed columns (ingored in `compute stats` statements). However running queries against those columns throws the missing col stats warning which is confusing. 

       

      select count(*) from
      customers c,
      c.orders o;
      Max Per-Host Resource Reservation: Memory=16.00KB Threads=3
      Per-Host Resource Estimates: Memory=36MB
      WARNING: The following tables are missing relevant table and/or column statistics.
      default.customers
      Analyzed query: SELECT count(*) FROM `default`.customers c, c.orders o

       

      We could probably skip the warnings if we detect the missing stats are for complex typed columns, until we support them. 

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            • Assignee:
              tmate Tamas Mate
              Reporter:
              bharathv Bharath Vissapragada
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              • Created:
                Updated:
                Resolved: