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  1. Core Server
  2. SERVER-19766

Initial sync index build is sequential and single-threaded

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Details

    • Bug
    • Status: Closed
    • Major - P3
    • Resolution: Works as Designed
    • None
    • None
    • Replication
    • None
    • ALL

    Description

      In this comment in SERVER-9135, I see that indexes (other than the _id index) should now be built in parallel during initial sync.

      However, in testing with 3.0.5 I see that all indexes on a collection are built sequentially. Furthermore the speed of each index build is CPU-bound on a single CPU core.

      mongod log file from repro attached.

      Attachments

        Issue Links

          related to

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-676 use multiple cores for index sort-phase

          • Minor - P4 - Minor loss of function, or other problem where easy workaround is present.
          • Backlog

          Improvement - An improvement or enhancement to an existing feature or task. SERVER-19775 Do not apply the first oplog entry during initial sync

          • Major - P3 - Major loss of function.
          • Closed

          Activity

            People

              scotthernandez Scott Hernandez (Inactive)
              jon.rangel@mongodb.com Jon Rangel (Inactive)
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              Dates

                Created:
                Updated:
                Resolved: