[SERVER-57061] Concurrent writers can create a Collection and a View on the same namespace Created: 19/May/21  Updated: 29/Oct/23  Resolved: 28/May/21

Status: Closed
Project: Core Server
Component/s: None
Affects Version/s: 4.4.0
Fix Version/s: 5.0.0-rc1, 5.1.0-rc0

Type: Bug Priority: Major - P3
Reporter: Henrik Edin Assignee: Henrik Edin
Resolution: Fixed Votes: 0
Labels: post-rc0, read-only-views
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
Backports
Depends
Problem/Incident
Related
related to SERVER-58489 Collection creation stuck in an infin... Closed
Backwards Compatibility: Fully Compatible
Operating System: ALL
Backport Requested:
v5.0, v4.4
Sprint: Execution Team 2021-05-31, Execution Team 2021-06-14
Participants:
Linked BF Score: 143

 Description   

The createCollection and createView cross checks the systems at a high level after acquiring the Collection MODE_IX lock.

 

However, writes to the CollectionCatalog and ViewCatalog are serialized individually making it possible that both a Collection and View to be added.



 Comments   
Comment by Vivian Ge (Inactive) [ 06/Oct/21 ]

Updating the fixversion since branching activities occurred yesterday. This ticket will be in rc0 when it’s been triggered. For more active release information, please keep an eye on #server-release. Thank you!

Comment by Githook User [ 04/Jun/21 ]

Author:

{'name': 'Henrik Edin', 'email': 'henrik.edin@mongodb.com', 'username': 'henrikedin'}

Message: SERVER-57061 Make CollectionCatalog aware of namespaces used by ViewCatalog.

The CollectionCatalog can now ensure a namespace is not concurrently registered for a Collection and View.

(cherry picked from commit af3e6c163fd3cc80ee1c7433943135e943432598)
Branch: v5.0
https://github.com/mongodb/mongo/commit/e1c1b02e3a0ff3a5b13a73c7d36d6750c02d2848

Comment by Githook User [ 28/May/21 ]

Author:

{'name': 'Henrik Edin', 'email': 'henrik.edin@mongodb.com', 'username': 'henrikedin'}

Message: SERVER-57061 Make CollectionCatalog aware of namespaces used by ViewCatalog.

The CollectionCatalog can now ensure a namespace is not concurrently registered for a Collection and View.
Branch: master
https://github.com/mongodb/mongo/commit/af3e6c163fd3cc80ee1c7433943135e943432598

Comment by Daniel Gottlieb (Inactive) [ 20/May/21 ]

Marking that this likely affects 4.4 and likewise requested a backport. Will let storage execution deem if it's worth backporting.

Comment by Daniel Gottlieb (Inactive) [ 20/May/21 ]

Does this date back to the project for collection creation to take IX locks? Can't recall if that was 4.2 or 4.4.

Comment by Geert Bosch [ 19/May/21 ]

Could this be fixed by view creation taking a MODE_X lock?

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