when sharding on a and need an index on a,b allow only a,b index

SERVER-6095 make multikey indices useful for sharding

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• Closed

SERVER-6493 Inserting array value for non-shard-key field used in prefix shard key index succeeds

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• Closed

SERVER-6809 splitVector doesn't filter additional index fields when shard key is prefix of index

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• Closed

DOCS-247 Changing Shard Key Index; shard key index can be a compound index using the shard key as the prefix

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• Closed

SERVER-6107 Add more tests for sharding operations with prefix shard key

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• Closed