jstest + design: Express _id $eq DBRef-shaped tassert repro

    • Type: Task
    • Resolution: Unresolved
    • Priority: Major - P3
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      Companion artifact for SERVER-126499 (Express tassert on DBRef-shaped `_id` literal).

      Identifies eligibility/re-validation mismatch in plan_executor_express.cpp lines 551-568, 712-718, 779-784. Proposes Option A (relax isExactMatchOnId for literal-only `$`-prefixed objects) + Option B fallback (decline Express, drop to classic path).

      Files in worktree mongo-w4-3:

      • jstests/core/express/express_id_eq_dbref_crash.js (150 lines)
      • src/mongo/db/exec/express/SERVER-126499-design.md

      Status: Draft.

            Assignee:
            Unassigned
            Reporter:
            Mehar Grewal
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              Created:
              Updated: