A Look At MongoDB 1.8's MapReduce Changes
MongoDB 1.7.5 shipped yesterday, and is expected to be the last ‘beta’ release of what will become MongoDB 1.8. As part of the release, I’ve been doing testing of the new MapReduce functionality and thought this a good time to highlight those changes for people. If you aren’t new to MongoDB MapReduce, the most important thing to note since MongoDB 1.6.x is that temporary collections are gone; it i
leifw: 11 Buggy Disappointments in MongoDB
I've been exploring MongoDB primarily for its map-reduce functionality lately. I've found a few shortcoming that I'm not crazy about. If you dump (i.e. export to BSON format) a document containing an array with undefined elements, then when you import that data, the undefined elements are lost, changing the indexes of the values. For example, exporting a document that contained a member that was c
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