Uploaded image for project: 'Core Server'
  1. Core Server
  2. SERVER-36184

Delete the OplogStart stage

    XMLWordPrintableJSON

Details

    • Icon: Task Task
    • Resolution: Fixed
    • Icon: Major - P3 Major - P3
    • 4.1.2
    • None
    • Querying, Storage
    • None
    • Fully Compatible
    • Query 2018-07-30

    Description

      This stage was used for optimizing predicates of the shape {ts: {$gte: <Timestamp>}} on the oplog. However, its implementation was MMAP-specific. On WiredTiger systems, the ts of each oplog entry forms the RecordId for the WT table backing the oplog. The beginning of the oplog scan can be found efficiently by simply seeking to the appropriate RecordId.

      Since MMAP is no longer supported, OplogStart can be removed.

      Attachments

        Activity

          People

            david.storch@mongodb.com David Storch
            david.storch@mongodb.com David Storch
            Votes:
            0 Vote for this issue
            Watchers:
            0 Start watching this issue

            Dates

              Created:
              Updated:
              Resolved: