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Type:
New Feature
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Resolution: Fixed
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Priority:
Major - P3
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Affects Version/s: None
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Component/s: None
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Storage Engines - Server Integration
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Fully Compatible
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SOSESI - 2026-04-21
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Add a method to determine whether a collection uses cold storage tier.
To block updates on cold collections (SERVER-122579), the write path in performUpdate() needs to query whether the target collection is cold. The storage tier is already persisted in the catalog (inside the WT `storageEngine` config string as `disaggregated=(storage_tier=cold)`) at collection creation time, but there is no read accessor to retrieve it. Without this accessor, the command layer has no way to distinguish cold collections from hot ones.
Pseudocode:
// 1. Add flag to WiredTigerRecordStore::Params struct Params { // ... existing fields ... bool isColdCollection{false}; }; // 2. Populate from collection options during RecordStore creation WiredTigerRecordStore::Params params{ // ... existing fields ... .isColdCollection = isColdStorageTier(options.storageEngineCollectionOptions), }; // 3. Store and expose on WiredTigerRecordStore bool isColdCollection() const { return _isColdCollection; } // 4. Expose on RecordStore base interface virtual bool isColdCollection() const { return false; }
- is depended on by
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- Closed
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