Details
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Task
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Resolution: Fixed
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Major - P3
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None
Description
Our resharding docs say:
Resharding a collection that has a uniqueness constraint is not supported
This isn't quite true. Resharding requires that all existing unique indexes can be supported by the new shard key, using the same rules as shardCollection. So a collection with a uniqueness constraint can be resharded as long as that existing constraint is still satisfied per the rules here.