Big Fat Jar Compilation

 mvn clean install -P fat-jar package shade:shade@spark-fat-jar assembly:single

Check whether changes happen in multiple git repositories

for /f "tokens=*" %%a in ('dir /ad /b') do cd %%a & git status & cd ..

Thanks for the answers in https://stackoverflow.com/questions/24352701/check-status-of-all-git-repositories-at-once