As far as I can tell the old sstable reading code required reading the
data into a contiguous buffer. The function data_consume_rows_at_once
implemented the old behavior and incrementally code was moved away
from it.
Right now the only use is in two tests. The sstables used in those
tests are already used in other tests with data_consume_rows.
Signed-off-by: Rafael Ávila de Espíndola <espindola@scylladb.com>
Message-Id: <20181127024319.18732-2-espindola@scylladb.com>