DataStore implementation which creates empty files matching given identifier.
This can be use to try migration of repositories where DataStore size is large
and cannot be accessed as transferring them would take quite a bit of time. As migration
does not involve accessing the actual binary content and only binary identifiers are
transferred it should enable us to get past the migration phase
Nested Class Summary
Nested classes/interfaces inherited from interface org.apache.jackrabbit.oak.plugins.blob.SharedDataStore