[DOCS-11039] Docs for SERVER-31941: Disallow retryable writes in storage engines which do not support document-level locking Created: 20/Nov/17  Updated: 29/Oct/23  Resolved: 01/Dec/17

Status: Closed
Project: Documentation
Component/s: None
Affects Version/s: None
Fix Version/s: 3.6.0-rc5, 3.7.1

Type: Task Priority: Major - P3
Reporter: Kay Kim (Inactive) Assignee: Kay Kim (Inactive)
Resolution: Fixed Votes: 0
Labels: bkp
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
Documented
documents SERVER-31941 Disallow retryable writes in storage ... Closed
Participants:
Days since reply: 6 years, 12 weeks, 2 days ago
Epic Link: DOCS: 3.6 Server

 Description   

Documentation Request Summary:

No documentation summary in engineering ticket

Engineering Ticket Description:

While retryable writes works in MMAPV1, due to the collection-level locking its performance is so bad that it cannot be used in practice. Because of this, we should disable retryable writes if StorageEngine::supportsDocLocking() == false.

The effective behaviour should be that if the storage engine doesn't support document-level locking, any requests which include a txnNumber should fail with code UnsupportedOperation.


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