Loader was changed to quickly determine ownership after consuming
sharding metadata only. If it's not available, it falls back to
reading first and last keys from summary. The fallback is only there
for backward compatibility and it costs a lot more as we don't
skip to the end where keys are located in summary.
With tablets, sharding metadata is only first and last keys so
we can do it without sharder. So loader will be able to use it
instead of looking up keys in summary.
Signed-off-by: Raphael S. Carvalho <raphaelsc@scylladb.com>
Closesscylladb/scylladb#17805
c46c2d436f