Anticompaction throttling can be done by setting the usual compaction_throughput_mb_per_sec knob on cassandra.yaml or via nodetool setcompactionthroughput. Did you try lowering that and checking if that improves the dropped mutations?
2016-08-09 13:32 GMT-03:00 Stefano Ortolani <ostef...@gmail.com>: > Hi all, > > I am running incremental repaird on a weekly basis (can't do it every day > as one single run takes 36 hours), and every time, I have at least one node > dropping mutations as part of the process (this almost always during the > anticompaction phase). Ironically this leads to a system where repairing > makes data consistent at the cost of making some other data not consistent. > > Does anybody know why this is happening? > > My feeling is that this might be caused by anticompacting column families > with really wide rows and with many SStables. If that is the case, any way > I can throttle that? > > Thanks! > Stefano >
