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  1. Documentation
  2. DOCS-7317

Concurrent modifications can cause results to be missed from scans even under 3.2/WT

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    • Resolution: Done
    • Icon: Major - P3 Major - P3
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    Description

      https://docs.mongodb.org/manual/faq/concurrency/#what-isolation-guarantees-does-mongodb-provide

      Dropped results for MMAPv1. For MMAPv1, reads may miss matching documents that are updated or deleted during the course of the read operation. However, data that has not been modified during the operation will always be visible.

      This is not specific to MMAPv1 - it applies to WT as well.

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            kay.kim@mongodb.com Kay Kim (Inactive)
            bruce.lucas@mongodb.com Bruce Lucas (Inactive)
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              Created:
              Updated:
              Resolved:
              7 years, 48 weeks, 2 days ago