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  1. Core Server
  2. SERVER-16441

syncSourceFeedback can spin, with network traffic, during reconfig

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Details

    • Bug
    • Status: Closed
    • Major - P3
    • Resolution: Fixed
    • None
    • 2.8.0-rc3
    • Replication
    • None
    • ALL

    Description

      During a replica set reconfig, each node independently increments and installs the new config. While this is happening, it is possible for a node to attempt to run an updatePosition command on a sync source node with a different config version than its own. Currently, the code tries again immediately until the config versions between the two nodes becomes the same and the updatePosition command finally succeeds; this can result in heavy network traffic.
      One stopgap solution to this problem is to put in a sleep between retries.

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              milkie@mongodb.com Eric Milkie
              milkie@mongodb.com Eric Milkie
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                Updated:
                Resolved: