* MAX_OPEN_FILES locations, as measured by the 'out_refcnt' of each blob.
* Therefore, the apply_operations implementation need not worry about running
* out of file descriptors, unless it might open more than one file descriptor
* MAX_OPEN_FILES locations, as measured by the 'out_refcnt' of each blob.
* Therefore, the apply_operations implementation need not worry about running
* out of file descriptors, unless it might open more than one file descriptor