[DOCS-9834] MapReduce output on sharded clusters Created: 30/Jan/17  Updated: 30/Oct/23

Status: Closed
Project: Documentation
Component/s: manual, Server
Affects Version/s: None
Fix Version/s: Server_Docs_20231030

Type: Bug Priority: Major - P3
Reporter: Ricardo Lorenzo Assignee: Unassigned
Resolution: Won't Do Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
Duplicate
duplicates DOCS-12899 Investigate changes in SERVER-42134: ... Closed
Related
is related to SERVER-7926 Map Reduce with sharded output can ap... Closed
is related to SERVER-31766 Deprecate creation of new sharded out... Closed
Participants:
Days since reply: 1 year, 14 weeks, 2 days ago
Epic Link: DOCSP-1769

 Description   

As per SERVER-7926, using MapReduce output could end into a serious data consistency issues.

The documentation must warn and push users away from using MapReduce on sharded clusters.



 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 Kay Kim (Inactive) [ 02/Apr/20 ]

We currently document the deprecation 

https://docs.mongodb.com/manual/core/map-reduce/#sharded-collections

 https://docs.mongodb.com/manual/core/map-reduce-sharded-collections/#sharded-collection-as-output

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