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  1. IMPALA
  2. IMPALA-10492

Lower default MAX_CNF_EXPRS query option

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Details

    • Improvement
    • Status: Resolved
    • Minor
    • Resolution: Fixed
    • Impala 4.0.0
    • Impala 4.0.0
    • Backend, Frontend
    • ghx-label-2

    Description

      Currently MAX_CNF_EXPRS is set to unlimited by default, with a complex querie that container many predicates the CNF rewrite can lead to significant frontend memory usage and eventually OutOfMemory. A potential default value could be in the range of 1000, but it should work well with the current TCP-DS queries.

      cc.: amansinha, drorke

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            rizaon Riza Suminto
            tmate Tamas Mate
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            Dates

              Created:
              Updated:
              Resolved: