The loader code still "knows" that tables' sstables live in directories
on datadir filesystem, but that's not always so. So whether or not the
directory with sstables exists should be checked by sstable directory's
component lister, not the loader.
After this change potentially missing quarantine directory will be
processed with the sstable directory with empty result, but that's OK,
empty directories should be already handled correctly, so even if the
directory lister doesn't produce any sstables because it found no files,
or because it just skipped scanning doesn't make any difference.
Signed-off-by: Pavel Emelyanov <xemul@scylladb.com>
2678cc2ae8