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Because DAOS only flattens small objects, so it should be able to store multiple flattened objects in the same SSD extent to avoid fragmentation and reduce write amplification.

Read handling

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of flattened WORM object

DAOS will have a new read handler for flattened object, it can locate the requested key and value from the flattened object format by leaner search. Because flattened object is stored in DT-blob and it can be evicted from DRAM, if storage engine receives a read request against an evicted object, it can bring the entire object back to DRAM by one SSD read.

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