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  1. Hive
  2. HIVE-11281

Memoize toStringTree() for ASTNode

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Details

    • Bug
    • Status: Resolved
    • Major
    • Resolution: Won't Fix
    • 1.0.0, 1.1.0, 1.2.0
    • None
    • Query Planning
    • None

    Description

      Currently it defaults to BaseTree::toStringTree() which always computes it recursively. For very large trees it becomes expensive. On one particular test query compilation time went down from 55 seconds to 2 seconds.

      Attachments

        1. HIVE-11281.3.patch
          1 kB
          Ashutosh Chauhan
        2. HIVE-11281.2.patch
          2 kB
          Ashutosh Chauhan
        3. HIVE-11281.patch
          2 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

          Activity

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              ashutoshc Ashutosh Chauhan
              ashutoshc Ashutosh Chauhan
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              Dates

                Created:
                Updated:
                Resolved: