Investigate ReplSetConfig and topology coordinator term mismatch during stepdown/stepup

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    • Type: Task
    • Resolution: Unresolved
    • Priority: Major - P3
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    • Affects Version/s: None
    • Component/s: Replication
    • Replication
    • Repl 2025-08-18, Repl 2025-09-01, Repl 2025-09-15, Repl 2025-09-29, Repl 2025-10-13, Repl 2025-10-27, Repl 2025-11-24, Repl 2026-02-16
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      In WRITING-35824 we reviewed blocking heartbeats for nodes in stepdown to prevent a mismatch between the ReplSetConfig and topology coordinator's term. It's unclear if this inconsistency currently results in any bugs. We need to investigate two things:

      1. is it possible for this inconsistency to cause undesirable conditions like a node incorrectly thinking it's a primary or race conditions?
      2. Is it possible to refactor the code so that these are always consistent?     

            Assignee:
            Unassigned
            Reporter:
            Denis Trailin
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              Created:
              Updated: