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  1. Documentation
  2. DOCS-5392

Document change to keysExamined for the IXSCAN stage in the 3.2 release notes

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      In 2.4 and 2.6, nscanned was calculated as every matching key returned by the index scan plus any out-of-range key which was examined before seeking to the start of the next range. The same holds in 3.0 for the keysExamined statistic. However, this code always had a strange exception in which it did not count the last out-of-range key examined.

      In the release notes we should document that, as of 3.2, the final out-of-range key (i.e. the "end" key) is counted towards keysExamined.

      See SERVER-16381 for details.

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            ravind.kumar Ravind Kumar (Inactive)
            david.storch@mongodb.com David Storch
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              Created:
              Updated:
              Resolved:
              8 years, 3 weeks ago