Hmm, I just realized that sending the backup this early may not be correct. The EntryWrappingInterceptor may decide to throw an OutdatedTopologyException if the topology changes, and the command may actually fail the second time because another operation modified the value in the meantime. If the other modification is on another node (which just became the primary), the backup request with the value of the failed operation might be applied on the backup after the value of the successful operation. Cue in mandatory versions and tombstones :)