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Type: Improvement
Resolution: Fixed
Priority: Major - P3
Fix Version/s: 9.1.0-rc0, 9.1.0-rc1026
Affects Version/s: None
Component/s: None
Labels:
- M2
- join-explain

Assigned Teams:

Query Optimization
Backwards Compatibility:
Fully Compatible
CAR Domain/s:
None

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

queryPlanner.ceSamplingMetadata and queryPlanner.fieldStatsMetadata are stored in StringMaps, so explain lists their namespaces in hash-map order. That order can change between runs, so any golden tests would have to sort these themselves for a deterministic order.

Useful for SERVER-139074.

is related to

SERVER-139074 Add golden test for the full explain output of join-optimized queries

In Code Review

Assignee:: Max Verbinnen
Reporter:: Max Verbinnen
Participants:: Max Verbinnen
Votes:: 0 Vote for this issue
Watchers:: 2 Start watching this issue

Created:: Nov 11 2026 03:23:21 PM UTC
Updated:: Nov 13 2026 11:25:54 AM UTC
Resolved:: Nov 13 2026 11:25:54 AM UTC

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PagerDuty