> Is there a way to add a new dependency to these machines? Our builds use two worker labels: 1. ubuntu14.04-c4.4xlarge-gp2 2. ub14-build-only
1 uses https://github.com/awleblang/impala-setup, and I think you should add libffi to there. It's something you should do anyway so new users get set up with the right dependencies. 2 is a different story, but I see that at http://jenkins.impala.io:8080/configure that worker is already installing a JDK via apt-get. You could use a similar pattern to install libffi.
