Mastering Apache Cassandra 3.x - Third Edition

Disk performance

Even before looking at the following screenshot, what are the metrics that come to your mind when you want to know more about disk performance? How do you capture them? What are the use cases for those metrics being used? If you expected the following metrics, you are definitely on the right track for understanding the importance of these metrics. For the following screenshot, this Cassandra cluster is running in the cloud and balanced across three AZs with a replication factor three; instance types and architectures are the same and even the config parameters are also consistent across the cluster, along with no hot spots or large partitions. What are your first guesses about the issue if all entire schema is size-tiered ...