That's a debug message. From the sound of it, it's triggered on read where there is a digest mismatch between replicas. As to whether it's normal, well that depends on your cluster. Are the nodes reporting lots of dropped mutations and are you writing at <QUORUM?
- lots of DigestMismatchException in cassandra3 Adeline.Pan
- Re: lots of DigestMismatchException in cassandra3 Tommy Stendahl
- RE: lots of DigestMismatchException in cassandra3 Adeline.Pan
- RE: lots of DigestMismatchException in cassand... kurt Greaves
- Re: lots of DigestMismatchException in cas... kurt Greaves
- RE: lots of DigestMismatchException i... Adeline.Pan
- Re: lots of DigestMismatchExcepti... kurt Greaves
- RE: lots of DigestMismatchExc... Adeline.Pan
- Re: lots of DigestMismatchExc... kurt Greaves