Implement clear() and destroy() method

pmem / pmemkv

Key/Value Datastore for Persistent Memory

https://pmem.io

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Implement clear() and destroy() method #662

Open igchor opened 4 years ago

igchor commented 4 years ago

clear - https://github.com/pmem/pmemkv/issues/57 destroy - needed to free the engine itself - especially important when using oids

igchor commented 4 years ago

After implementing destroy() we should extend tests as in: https://github.com/pmem/libpmemobj-cpp/issues/617

karczex commented 3 years ago

destroy() should remove file (if not devdax). It should work only for already opened engine, to prevent remove of random file passed to application by mistake,
clear() should remove all data from engine, but engine itself should be usable

lukaszstolarczuk commented 2 years ago

copy pasted from 57:

Efficient way to clear all persisted keys & their values

More important when using device DAX (https://github.com/pmem/pmemkv/issues/60), since formatting the entire device >takes a long time. Truncating can be much faster since only the used portion of the device needs to be reset.