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  1. Core Server
  2. SERVER-10154

Suppress replication of temporary collections used for mapReduce

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Details

    • Icon: Bug Bug
    • Resolution: Done
    • Icon: Major - P3 Major - P3
    • None
    • 2.2.6, 2.4.6
    • MapReduce, Replication
    • None
    • Linux
    • 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.

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            Unassigned Unassigned
            crumbjp Hiroaki
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            Dates

              Created:
              Updated:
              Resolved: