We are seeing high number of DigestMismatchException on our Cassandra deployment. We have a cluster of 4 nodes with RF=3 and we read/write in Quorum. I understand some DigestMismatchException is normal and is the mechanism for Cassandra to ensure consistency by doing read-repair.
In our case, even though we have 4 clients, only the client that writes the data, read the data because of request sharding at client end. So I would expect the replication to happen fast and data be consistent on the 3 copies before the read hits the cluster. The size of column value is approx 128K. We verified multiple times that the timestamp of all the clients is in sync. Is this something to worry about? How do we troubleshoot if this an issue? Thanks, Naren
