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Type: Bug
Resolution: Fixed
Priority: Major - P3
Fix Version/s: 8.2.0-rc0, 8.1.3, 8.0.13, 7.0.26
Affects Version/s: 6.0.11
Component/s: None
Labels:
- former-storex-namer

Assigned Teams:

Storage Execution
Backwards Compatibility:
Fully Compatible
Operating System:
ALL
Backport Requested:

v8.1, v8.0, v7.0, v6.0
Sprint:
Storage Execution 2025-06-09, Storage Execution 2025-06-23
Linked BF Score:
200
CAR Domain/s:
None

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

Oplog slots can be reserved for inserts prior to taking an exclusive lock on the metadata resource.

This can generate the following ordering on the primary

Insert 1	Insert 2
Reserve oplog slot with TS(1)
	Reserve oplog slot with TS(2)
	X-lock resource
	Insert document with RID(1)
X-lock resource
Insert document with RID(2)

On the secondary, we apply oplog entries serially for non-clustered capped collections. So we would apply oplog entry TS(1) with RID(1) and oplog entry TS(2) with RID(2) as record IDs are not globally unique. This results in a different natural order between the primary and secondaries, which we guarantee for capped collections.

The same might be possible for updates and deletes.

is depended on by

SERVER-86692 dbhash doesn't check natural order for capped collections with _id index

Closed

is duplicated by

SERVER-87852 capped collection write workload can negatively impact other workload in the system

Closed

is related to

SERVER-106534 Add IngressRequestRateLimiter parameters to config fuzzer

Open

related to

SERVER-82752 Writers can skip acquiring resource metadata lock for capped collection in 4.4 and older versions.

Closed

SERVER-106354 Missing resource lock acquisition when applying batch of inserts to a capped collection

Closed

SERVER-82863 Add support for the new capped collection option 'allowConcurrentWrites'.

Closed

SERVER-87852 capped collection write workload can negatively impact other workload in the system

Closed

SERVER-106005 Always scan capped collections in natural order for dbhash

Blocked

(3 related to)

Assignee:: Damian Wasilewicz
Reporter:: Gregory Wlodarek
Participants:: Damian Wasilewicz, Githook User, Gregory Wlodarek, Suganthi Mani
Votes:: 0 Vote for this issue
Watchers:: 23 Start watching this issue

Created:: Oct 13 2023 04:25:36 PM UTC
Updated:: Sep 29 2025 10:30:44 PM UTC
Resolved:: Jun 13 2025 02:03:21 PM UTC

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