Uploaded image for project: 'Core Server'
  1. Core Server
  2. SERVER-10154

Suppress replication of temporary collections used for mapReduce

    XMLWordPrintable

    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major - P3
    • Resolution: Works as Designed
    • Affects Version/s: 2.2.6, 2.4.6
    • Fix Version/s: None
    • Component/s: MapReduce, Replication
    • Labels:
      None
    • Environment:
      Linux
    • Operating System:
      ALL

      Description

      Temp collection of mapReduce (such as below) are replicated nevertheless it's useless moreover so frequently.

      • "<db name>.tmp.mr.<collection name>_1"
      • "<db name>.tmp.mr.<collection name>_1_inc"

      This issue causes big transaction so performance is quite deteriorated.

      The primary node will hangup in many case.

      We can confirm this replication by looking local.rs.oplog.

        Attachments

          Issue Links

            Activity

              People

              Assignee:
              Unassigned Unassigned
              Reporter:
              crumbjp Hiroaki
              Participants:
              Votes:
              3 Vote for this issue
              Watchers:
              11 Start watching this issue

                Dates

                Created:
                Updated:
                Resolved: