The Tail of a Terrible, Horrible, No Good, Very Bad Bug in Cassandra

A long time ago I worked at a company that had a wide use and deployment of Apache Cassandra . For those of you unfamiliar Cassandra is a very unique database thats widely used amongst most of your favorite massive-scale websites. Apple is regularly quoted as a major user having over 100PB's of data sitting around in thousands of clusters, but its relatively ubiquitous in the industry. What is…