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Type:
Bug
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Resolution: Done
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Priority:
Major - P3
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Affects Version/s: 1.7.4
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Component/s: Querying
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Environment:OS:Win2003 x64 Enterprise
FileSystem:NTFS
MongoVersion:1.7.4
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I have a collection contains 821463 document in mongodb,I want to group the document by a key named MacId.My command is below: