Configuring Livy with Cloudera 5.14 and Spark2: Livy can't find its own JAR files
I fixed this by building Livy from the Cloudera repo with the string mvn clean package -DskipTests -Dspark-2.2.0.cloudera2 -Dscala-2.10. This version is outdated, has a broken UI, some of the Scala tests fail so they have to be skipped, and I didn't bother looking into how or why specifying 2.2.0.cloudera2 works. I also had to install Hue and its dependent services on the cluster. No other distribution of Livy, binary or source, worked.