TLA+ spec + jstest: step-up catchup must not be bypassed when oplog non-empty

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    • Type: Task
    • Resolution: Unresolved
    • Priority: Major - P3
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      Companion artifact for SERVER-126311 (disagg-stability label — step-up bypasses catchup when no checkpoint but oplog has writes).

      TLA+ with `AllowBypassOnNoCheckpoint` toggle: green cfg (bypass disabled) passes `NoLostWritesOnStepUp`; bug cfg produces counter-example matching pre-fix code path.

      Files in worktree mongo-w4-12:

      • src/mongo/tla_plus/Replication/StepUpCatchupCheckpoint/{*.tla, MC.cfg, MC_bug.cfg, OWNERS.yml, README.md}
      • jstests/replsets/stepup_catchup_no_bypass_with_oplog.js

      Status: Draft.

            Assignee:
            Unassigned
            Reporter:
            Mehar Grewal
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              Created:
              Updated: