Thanks, iandr413. I was able to run example. I was trying to launch app from archive before, so I extracted files from archive and pointed my job.properties to the folder and it works! However the process looks too complicated right now:
1. I first package my app via mvn
2. Copy workflow.xml and libs into HDFS
3. Copy jop.properties into sandbox’s filesystem
4. Launch from sandbox terminal
Any way I can simplify it? Ideally it will be great to import my package from we UI.