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Type:
Improvement
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Resolution: Duplicate
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Priority:
Minor - P4
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None
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Affects Version/s: None
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Component/s: Aggregation Framework
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None
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3
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It would be great for a $group stage to use indexes for easy group.
For example, this aggregation
[
{
$group: {
_id: "$media",
count: {$sum:1}
}
},
{
$sort: {
count: 1
}
},
{
$limit: 10
}
]
is not using the "media" index.
- duplicates
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- Backlog
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- related to
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SERVER-21471 Bad index selection on aggregate with $match + $sort
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- Closed
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