We tested it in QA, but in production it brought our cluster to a halt even though we setcompactionthroughput to 1, we were severely limited. Nodetool stop compaction did not seem to have any impact either. We ended up increasing memory on one node to help alleviate some issue(cranked it up to 16G and we hope to put it back down to 8 G later).
Just be careful if you are trying to make the switch. Also, I added this jira ticket which would be extremely nice to turn on LCS for a CF/node and do a node by node switch… https://issues.apache.org/jira/browse/CASSANDRA-5335 Dean
