Uploaded image for project: 'WiredTiger'
  1. WiredTiger
  2. WT-2291

Random cursor walk inefficient in skip list only trees

    XMLWordPrintableJSON

Details

    • Bug
    • Status: Closed
    • Major - P3
    • Resolution: Fixed
    • None
    • WT2.8.0
    • None
    • 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.

      Attachments

        Issue Links

          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

          Activity

            People

              keith.bostic@mongodb.com Keith Bostic (Inactive)
              alexander.gorrod@mongodb.com Alexander Gorrod
              Votes:
              0 Vote for this issue
              Watchers:
              3 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved: