* Introduce common method EverExisted
* Define DeletionInfo for struct that must implement Source
* Refactor tree srv
Signed-off-by: Airat Arifullin <a.arifullin@yadro.com>
Current implementation has some quirks. For example,
using only half of object.put.pool_size_remote threads
tells replicator that is node is 50% loaded,
but in reality we could be putting lot's of big objects.
Signed-off-by: Dmitrii Stepanov <d.stepanov@yadro.com>
Previously, we can continue to return `EndOfListing` infinitely.
Reflect iterator reuse via Rewind() method.
Signed-off-by: Evgenii Stratonikov <e.stratonikov@yadro.com>
