Slides: https://www.slideshare.net/DataStax/troubleshooting-cassandra-jb-langston-datastax-c-summit-2016 | This will be a reprise of my popular talk from last year, updated and expanded for Cassandra 3.0. I'll discuss the general approach to troubleshooting Cassandra, then give a guided tour what to look for in nodetool, logs, and OpsCenter, highlighting the most useful topics for troubleshooting real-world Cassandra issues. About the Speaker J.b. Langston Principal Support Engineer, DataStax I've been with DataStax support for over 4 years, helping customers troubleshoot problems and keep their Cassandra clusters running smoothly. Prior to that, I had 8 years of experience supporting a Java-based grid computing platform.