Scrub is supposed to not remove anything from input, write it as is
while fixing any corruption it might have. It shouldn't have any
assumption on the input. Additionally, a data shadowed by a tombstone
might be in another corrupted sstable, so expired tombstones should
not be purged in order to prevent data ressurection from occurring.
Signed-off-by: Raphael S. Carvalho <raphaelsc@scylladb.com>
Message-Id: <20210904165908.135044-1-raphaelsc@scylladb.com>