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  1. Core Server
  2. SERVER-16441

syncSourceFeedback can spin, with network traffic, during reconfig

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major - P3
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 2.8.0-rc3
    • Component/s: Replication
    • Labels:
      None
    • Operating System:
      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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          is related to

          Bug - A problem which impairs or prevents the functions of the product. SERVER-16272 SyncSourceFeedback spams log on errors

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

          Bug - A problem which impairs or prevents the functions of the product. SERVER-26494 remove unreachable else-branch in sync_source_feedback.cpp logic

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

          Bug - A problem which impairs or prevents the functions of the product. SERVER-27397 Disable OplogFetcher sync source re-evaluation during initial sync

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

            Activity

              People

              Assignee:
              milkie Eric Milkie
              Reporter:
              milkie Eric Milkie
              Participants:
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                Dates

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                Updated:
                Resolved: