ScyllaDB Manager: Repair and Tombstones

Repairs can be used to fix anything wrong with the database. We
should always run it when we suspect there is something wrong

If I happen to read all of my data with ConsistencyLevel=All, then
a later repair is not needed (assuming no new writes)

The following query is always fast, because it returns just one
row:  SELECT * FROM tracking.tracking_data WHERE first_name=’Jim’ LIMIT 1;

Default gc_grace_seconds is