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Type:
Improvement
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Resolution: Fixed
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Priority:
Major - P3
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Affects Version/s: None
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Component/s: None
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Labels:None
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Fully Compatible
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v6.0
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QE 2022-05-02, QE 2022-05-16
I was surprised to see the following:
when profiling
db.products.aggregate([{$group:{_id:'$type', count: {$sum:1}}}], {hint:{'$natural':1}})
Because we just summing the constant 1, there is no need for compensated summation: we should just count using a 64-bit integer. It won't overflow.
- has to be done after
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SERVER-64227 Remove $sum/$avg merging logic which handles old input data format from a shard after branching 6.0
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- Closed
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- related to
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SERVER-67282 $add expression should not use DoubleDoubleSummation in SBE
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- Closed
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- Closed
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