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  1. Core Server
  2. SERVER-8307

Use db-level lock when MapReduce input and output use a single DB

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Details

    • Improvement
    • Status: Closed
    • Minor - P4
    • Resolution: Gone away
    • None
    • None
    • Concurrency, MapReduce

    Description

      In State::postProcessCollectionNonAtomic() and State::postProcessCollection(), only take a global write lock when necessary (e.g. if the input and output databases differ).

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              backlog-query-optimization Backlog - Query Optimization
              benjamin.becker Ben Becker
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