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Type: Task
Resolution: Fixed
Priority: Major - P3
Fix Version/s: 9.0.0-rc0
Affects Version/s: None
Component/s: None
Labels:
- unbounded-cursor-memory-usage

Assigned Teams:

Query Execution
Backwards Compatibility:
Fully Compatible
Sprint:
QE 2026-04-27, QE 2026-04-13
CAR Domain/s:
None

Aha! Reference:
None
Tracking Level:
None
Risk Status:
None
Exec Notes:
None
Goal Name(s):
None
Goal Link:
None

Classic NearStage uses a RecordIdDeduplicator to track duplicate records per interval that is not bounded. We should add a memory knob for this stage and assert that the memory is always below the provided threshold. A similar knob should be added to Classic UpdateStage and classic CountScan stage.

has to be done after

SERVER-122412 Classic CountScan should use RecordIdDeduplicator to track duplicate records.

Closed

SERVER-122415 UpdateStage should track unique records using RecordIdDeduplicator

Closed

Assignee:: Foteini Alvanaki
Reporter:: Foteini Alvanaki
Participants:: Foteini Alvanaki, Githook User
Votes:: 0 Vote for this issue
Watchers:: 4 Start watching this issue

Created:: Mar 20 2026 04:42:11 PM UTC
Updated:: Apr 20 2026 01:58:39 PM UTC
Resolved:: Apr 17 2026 05:21:07 PM UTC

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