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  1. WiredTiger
  2. WT-5319

Avoid clearing the saved last-key when no instantiated key

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Details

    • Bug
    • Status: Closed
    • Major - P3
    • Resolution: Fixed
    • 4.2.0
    • WT10.0.0, 4.3.3, 4.2.3
    • None
    • 3
    • Storage Engines 2019-12-16
    • v4.2

    Description

      Performance regression got introduced in 4.2 version compared to 4.0 when the test contains 5 collections with 10 indexes each. Indexes are designed to have keys with substantial common prefixes; this seemed to be important to generate the issue. Collections are populated, then are sparsely updated in parallel, aiming for roughly 1 update per page, in order to generate dirty pages at a high rate with little application work.

      More details about the discussion of the issue can be found in SERVER-44991.

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              haribabu.kommi@mongodb.com Haribabu Kommi
              haribabu.kommi@mongodb.com Haribabu Kommi
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                Updated:
                Resolved: