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Type:
Task
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Resolution: Unresolved
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Priority:
Major - P3
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Affects Version/s: None
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Companion artifact for SERVER-121914 (downgrade to FCV 8.0 leaves uncleaned orphan documents).
Variant of SERVER-92484 — moveChunk commits but decision doc not yet persisted when FCV flips, leaving `pending: true` range-deletion. Fix: synchronous drain before FCV bit flips + structured warning as recovery hook. Test uses `suspendRangeDeletion` + `hangBeforeWritingDecisionDocument` failpoints.
Files in worktree mongo-w4-14:
- jstests/sharding/fcv_downgrade_orphan_cleanup.js
- src/mongo/db/global_catalog/SERVER-121914-design.md
Status: Draft.
- is related to
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SERVER-92484 Killing chunk migration session after commit can leave uncleaned orphan documents
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- Blocked
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- Investigating
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