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Type: Improvement
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Resolution: Done
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Priority: Major - P3
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None
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Affects Version/s: None
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Component/s: Storage
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Storage Engines 2018-07-30, Storage Engines 2018-08-13
We have work in progress to change the format of unique indexes moving forward. That work is specific to the WiredTiger storage engine - in order to support timestamp reads.
Some of the upgrade/downgrade work involves changing data format version (which is internal to the storage engine implementation). Review other enterprise only storage engines, including inMemory to ensure they behave correctly.