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  1. Core Server
  2. SERVER-87976

Use roaring bitmaps for RecordId deduplication in IndexScan stage

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    • Type: Icon: Task Task
    • Resolution: Fixed
    • Priority: Icon: Major - P3 Major - P3
    • 8.0.0-rc0
    • Affects Version/s: None
    • Component/s: None
    • None
    • Query Optimization
    • Fully Compatible
    • QO 2024-04-01

      Deduplication of record ids in index scans can use unbounded memory in the query subsystem. While we consider longer term solutions to this problem, we should consider whether we can gain some immediate benefit from choosing a different data structure for deduplication.

            Assignee:
            alexander.ignatyev@mongodb.com Alexander Ignatyev
            Reporter:
            alexander.ignatyev@mongodb.com Alexander Ignatyev
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