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Type:
Task
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Resolution: Done
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Affects Version/s: None
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Component/s: None
This has been discussed before here in https://github.com/mongoid/mongoid/issues/1080, but I don't have permission to reopen it.
This is occasionally happening to me, however I don't think it is a Mongoid issue alone, as the behavior can be observed when falling back to the driver. I can't isolate the cause. It's intermittent it doesn't affect all collections simultaneously. Should I post this on mongo-ruby-driver issues or it's relevant to have it here as well?
I'm using:
- mongoid/master
- mongodb 1.8.2
- mongo-ruby-driver 1.3.1
# Collection with more than one record User.count 2 # User#first and User#last returning same record User.first.id BSON::ObjectId('4e70407c9788eb1086000007') User.last.id BSON::ObjectId('4e70407c9788eb1086000007') # Retrieving last document from the driver. # There aren't any custom indexes defined for this collection. User.collection.driver.find().sort([['_id',-1]]).limit(1).first._id BSON::ObjectId('4e70407c9788eb1086000007') # Omitting #sort will return last document User.collection.driver.find().limit(1).first._id BSON::ObjectId('4e70407c9788eb1086000007') # Forcing #sort to asc _id returns actual first document User.collection.driver.find().sort([['_id',1]]).limit(1).first._id BSON::ObjectId('4e7044e49788eb108600000c')