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  1. WiredTiger
  2. WT-2291

Random cursor walk inefficient in skip list only trees

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major - P3
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: WT2.8.0
    • Component/s: None
    • Labels:
      None

      Description

      If a table consists of a single large skiplist, the current WT_CURSOR random next implementation is inefficient, since it walks the bottom level of the skip list on average 1.5 times.

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          is depended on by

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-21808 WiredTiger changes for 3.3.0

          • Major - P3 - Major loss of function.
          • Closed

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-21944 WiredTiger changes for 3.2.2

          • Major - P3 - Major loss of function.
          • Closed
          is related to

          Bug - A problem which impairs or prevents the functions of the product. SERVER-21887 $sample takes disproportionately long time on newly created collection

          • Major - P3 - Major loss of function.
          • Closed
          links to

          Web Link https://github.com/wiredtiger/wiredtiger/pull/2397

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              People

              • Assignee:
                keith.bostic Keith Bostic
                Reporter:
                alexander.gorrod Alexander Gorrod
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                Dates

                • Created:
                  Updated:
                  Resolved: