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Type: Improvement
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Resolution: Works as Designed
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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 Non-NYC 2018-04-09, Storage Non-NYC 2018-07-16, Storage Engines 2018-07-30, Storage Engines 2018-08-13
Starting MongoDB 4.0 binaries with an instance containing V2Unique format index should be reported as an error. Report a warning message on startup and an error message the first time a V2Unique index is used, to allow users to remove these using a MongoDB 4.0 binary.
- depends on
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SERVER-32825 Add the infrastructure for upgrade/downgrade of V2Unique indexes
- Closed