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  1. WiredTiger
  2. WT-3816

Enable prefix compression on the lookaside table

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    Details

    • Type: Improvement
    • Status: Closed
    • Priority: Major - P3
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 3.6.3, 3.7.1, WT3.1.0
    • Component/s: None
    • Labels:
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      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.

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          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

              Assignee:
              alexander.gorrod Alexander Gorrod
              Reporter:
              alexander.gorrod Alexander Gorrod
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                Dates

                Created:
                Updated:
                Resolved: