While benchmarking Cassandra I found “Mutation Dropped” messages in the logs. Now I know this is a good old question. It will be really great if someone can provide a check list to recover when such a thing happens. I am looking for answers of the following questions -
1. Which parameters to tune in the config files? – Especially looking for heavy writes
2. What is the difference between TimedOutException and silently dropping mutation messages while operating on a CL of QUORUM.