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  1. Hive
  2. HIVE-11291

Avoid allocation storm while doing rule matching on operator/expression trees

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Details

    • Improvement
    • Status: Closed
    • Major
    • Resolution: Fixed
    • None
    • 2.0.0
    • None
    • None

    Description

      RuleRegExMatch repeatedly allocates string while trying to find a matching pattern. This results in huge GC churn for large trees.

      Attachments

        1. HIVE-11291.patch
          9 kB
          Ashutosh Chauhan

        Issue Links

          is part of

          Task - A task that needs to be done. HIVE-11315 Compilation performance issues for large queries

          • Major - Major loss of function.
          • Resolved
          is related to

          Task - A task that needs to be done. HIVE-11315 Compilation performance issues for large queries

          • Major - Major loss of function.
          • Resolved

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              ashutoshc Ashutosh Chauhan
              ashutoshc Ashutosh Chauhan
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              Dates

                Created:
                Updated:
                Resolved: