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Type: Improvement
Resolution: Duplicate
Priority: Trivial - P5
Fix Version/s: None
Affects Version/s: 3.0.9
Component/s: Aggregation Framework, Querying
Labels:
None

Confidence Status:
None
Work Order:
3
CAR Domain/s:
None

Aha! Reference:
None
Tracking Level:
None
Risk Status:
None
Exec Notes:
None
Goal Name(s):
None
Goal Link:
None

Feedback from long-term MongoDB community users:

-index-covered queries will still fetch documents in the aggregation pipeline

-$group only executes post cursor merge in aggregation pipeline, while it would be more efficient to do it pre-merge.

duplicates

SERVER-5477 when sharded, no need to merge groups if $group _id is the shard key or original document _id

Backlog

SERVER-12015 Reenable use of covering indexes with aggregation

Closed

Assignee:: Unassigned
Reporter:: Taelen Lewis (Inactive)
Participants:: Charlie Swanson, Taelen Lewis
Votes:: 0 Vote for this issue
Watchers:: 7 Start watching this issue

Created:: Mar 01 2016 04:32:18 PM UTC
Updated:: Mar 02 2016 05:00:03 PM UTC
Resolved:: Mar 01 2016 04:45:31 PM UTC