SERVER-5858 Special index types including hashed indexes not always used when they should be

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• Closed

SERVER-7358 Pre-split new collections when using a hashed shard key

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• Closed

SERVER-511 "hash" index

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• Closed

SERVER-7674 MoveChunk should allow you to specify a chunk via its bounds

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• Closed

SERVER-8031 Allow dropping the _id index when you have a hashed _id index

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• Closed