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Type: Bug
Resolution: Fixed
Priority: Major - P3
Fix Version/s: 9.1.0-rc0, 9.1.0-rc1024
Affects Version/s: None
Component/s: None
Labels:
None

Assigned Teams:

Query Optimization
Backwards Compatibility:
Fully Compatible
Operating System:
ALL
Steps To Reproduce:

Hide

Remove the check for featureFlagGetExecutorDeferredEngineChoice

Show
Remove the check for featureFlagGetExecutorDeferredEngineChoice
CAR Domain/s:
None

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

When the cbr_shard_filter.js is run with deferred engine choice, it passes an empty EstimateMap to the plan executor, so costEstimate is absent from explain output.

is duplicated by

SERVER-134550 Support SBE in V3 explain via deferred engine choice

Closed

related to

SERVER-133591 cbr_shard_filter.js fails when featureFlagGetExecutorDeferredEngineChoice is off because an empty shard triggers zero-CE fallback to multiplanning

Closed

SERVER-136769 Complete TODO listed in SERVER-130179

Needs Scheduling

SERVER-136210 Propagate 'rankerChoice.reason' in explain V3 for SBE + deferred engine off queries

Needs Scheduling

Assignee:: Nicholas Zolnierz
Reporter:: Milena Ivanova
Participants:: Milena Ivanova, Nicholas Zolnierz
Votes:: 0 Vote for this issue
Watchers:: 3 Start watching this issue

Created:: Jun 30 2026 10:03:00 AM UTC
Updated:: Oct 10 2026 04:33:18 AM UTC
Resolved:: Oct 08 2026 04:18:13 PM UTC

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PagerDuty