Excerpts from Joshua Harlow's message of 2015-10-10 17:43:40 -0700: > I'm curious is there any more detail about #1 below anywhere online? > > Does cassandra use some features of the JVM that the openJDK version > doesn't support? Something else? > This about sums it up: https://github.com/apache/cassandra/blob/trunk/src/java/org/apache/cassandra/service/StartupChecks.java#L153-L155 // There is essentially no QA done on OpenJDK builds, and // clusters running OpenJDK have seen many heap and load issues. logger.warn("OpenJDK is not recommended. Please upgrade to the newest Oracle Java release");