[DOCS-7317] Concurrent modifications can cause results to be missed from scans even under 3.2/WT Created: 01/Mar/16  Updated: 14/Mar/16  Resolved: 14/Mar/16

Status: Closed
Project: Documentation
Component/s: None
Affects Version/s: None
Fix Version/s: None

Type: Task Priority: Major - P3
Reporter: Bruce Lucas (Inactive) Assignee: Kay Kim (Inactive)
Resolution: Done Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
Related
is related to DOCS-7268 audit faq: Concurrency Closed
Participants:
Days since reply: 7 years, 48 weeks, 2 days ago

 Description   

https://docs.mongodb.org/manual/faq/concurrency/#what-isolation-guarantees-does-mongodb-provide

Dropped results for MMAPv1. For MMAPv1, reads may miss matching documents that are updated or deleted during the course of the read operation. However, data that has not been modified during the operation will always be visible.

This is not specific to MMAPv1 - it applies to WT as well.



 Comments   
Comment by Githook User [ 14/Mar/16 ]

Author:

{u'username': u'kay-kim', u'name': u'kay', u'email': u'kay.kim@10gen.com'}

Message: DOCS-7317 reads and concurrent writes
Branch: master
https://github.com/mongodb/docs/commit/736ba9d8a0cd3d1969cd804588ac038ba3b2c480

Comment by Githook User [ 14/Mar/16 ]

Author:

{u'username': u'kay-kim', u'name': u'kay', u'email': u'kay.kim@10gen.com'}

Message: DOCS-7317 reads and concurrent updates
Branch: v3.0
https://github.com/mongodb/docs/commit/f925271b9cacbd2b94dec4e427139d26f21c7db9

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