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  1. WiredTiger
  2. WT-5319

Avoid clearing the saved last-key when no instantiated key

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major - P3
    • Resolution: Fixed
    • Affects Version/s: 4.2.0
    • Fix Version/s: WT10.0.0, 4.3.3, 4.2.3
    • Component/s: None
    • Labels:
    • Story Points:
      3
    • Sprint:
      Storage Engines 2019-12-16
    • Backport Requested:
      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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              Assignee:
              haribabu.kommi Haribabu Kommi
              Reporter:
              haribabu.kommi Haribabu Kommi
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                Updated:
                Resolved: