Uploaded image for project: 'WiredTiger'
  1. WiredTiger
  2. WT-3816

Enable prefix compression on the lookaside table

    XMLWordPrintable

Details

    • Improvement
    • Status: Closed
    • Major - P3
    • Resolution: Fixed
    • None
    • 3.6.3, 3.7.1, WT3.1.0
    • None
    • None

    Description

      The keys in the lookaside table can be long and all the entries for a given value share a prefix. We should enable prefix compression to get a more compact representation of lookaside entries in memory and on disk. This should be particularly noticeable for workloads with small document sizes.

      Note: this work started in WT-3769, which evolved into a bug fix for reverse cursor walks with particular delete patterns with prefix compression enabled.

      Attachments

        Issue Links

          is related to

          Improvement - An improvement or enhancement to an existing feature or task. WT-3817 Optimize lookaside table layout for prefix compression

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

          Improvement - An improvement or enhancement to an existing feature or task. WT-3769 Fix a bug in reverse cursor walks with particular delete patterns and prefix compression enabled

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

          Activity

            People

              alexander.gorrod@mongodb.com Alexander Gorrod
              alexander.gorrod@mongodb.com Alexander Gorrod
              Votes:
              0 Vote for this issue
              Watchers:
              3 Start watching this issue

              Dates

                Created:
                Updated:
                Resolved: