This seems to just be an issue with some cached class files.
I just tweaked the Jenkins job to clean the repo which will hopefully help. On 6/24/18 8:02 PM, Apache Jenkins Server wrote:
The Apache Jenkins build system has built Calcite-Avatica-Master (build #81) Status: Still Failing Check console output at https://builds.apache.org/job/Calcite-Avatica-Master/81/ to view the results.
