Hi, we have two Cassandra 2.1.15 clusters at work and are having some trouble with repairs.
Each cluster has 9 nodes, and the amount of data is not gigantic but some column families have 300+Gb of data. We tried to use `nodetool repair` for these tables but at the time we tested it, it made the whole cluster load too much and it impacted our production apps. Next we saw https://github.com/spotify/cassandra-reaper , tried it and had some success until recently. Since 2 to 3 weeks it never completes a repair run, deadlocking itself somehow. I know DSE includes a repair service but I'm wondering how do other Cassandra users manage repairs ? Vincent.