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  1. Core Server
  2. SERVER-40194

Revert SERVER-33248 on 4.0

    • Type: Icon: Task Task
    • Resolution: Fixed
    • Priority: Icon: Major - P3 Major - P3
    • 4.0.8
    • Affects Version/s: None
    • Component/s: Replication
    • None
    • Fully Compatible
    • Repl 2019-03-25, Repl 2019-04-08

      SERVER-33248 allows a node to choose a sync source with the same lastApplied if it has a higher lastOpCommitted. This leads to sync source cycles, as described in SERVER-39367. This is fixed on 4.2 in SERVER-39367, which reverts the change while introducing a new mechanism to propagate the majority commit point through heartbeats. However, SERVER-39367 is not safe to backport to 4.0, since it increases the likelihood of sync source cycles with nodes that have SERVER-33248. On 4.0, we will just revert SERVER-33248.

            Assignee:
            tess.avitabile@mongodb.com Tess Avitabile (Inactive)
            Reporter:
            tess.avitabile@mongodb.com Tess Avitabile (Inactive)
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              Created:
              Updated:
              Resolved: