[DOCS-13787] Large Number Of Collections Section References Removed Configuration Option Created: 24/Jul/20  Updated: 30/Oct/23

Status: Closed
Project: Documentation
Component/s: manual, Server
Affects Version/s: 4.2.0
Fix Version/s: Server_Docs_20231030

Type: Doc Removal Priority: Trivial - P5
Reporter: Collin Scangarella Assignee: Unassigned
Resolution: Won't Do Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Participants:
Days since reply: 1 year, 14 weeks, 2 days ago
Epic Link: DOCSP-11344

 Description   

Description

The section on large number of collections] states, "For each database, a single namespace file (i.e. <database>.ns) stores all meta-data for that database, and each index and collection has its own entry in the namespace file. MongoDB places limits on the size of namespace files."

However, removed mmapv1 options] states that the ability to change nssize was removed as it is a MMAPv1-specific configuration option.

Additionally, the 4.0 version of the docs say that WiredTiger is not subject to a limitation in the size of the namespace file]. I'm unsure as to why this section was removed for 4.2 as there is a considerable amount of information on the internet about MongoDb's limit on the number of collections from the days of MMAPv1 - most of that information does not specify that it does not apply to WiredTiger.

So, I'm assuming that there's no explicit limit (although I'm sure a practical limit exists). If that's the case, the section about large numbers of collections should be updated.

 

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 Comments   
Comment by Education Bot [ 31/Oct/22 ]

Hello! This ticket has been closed due to inactivity. If you believe this ticket is still important, please reopen it and leave a comment to explain why. Thank you!

Comment by Collin Scangarella [ 24/Jul/20 ]

Here are the links from above (which for some reason did not work):

https://docs.mongodb.com/manual/core/data-model-operations/#large-number-of-collections

https://docs.mongodb.com/manual/reference/configuration-options/#removed-mmapv1-options

https://docs.mongodb.com/v4.0/reference/limits/#Number-of-Namespaces

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