How to figure out what JARs are in Hadoop classpath? I'm using Hortonworks 2.5 sandbox and want to run my custom application using already present im sandbox Hadoop JARs
There is a command hadoop classpath that does exactly you need.
Please refer here for more details:
https://community.hortonworks.com/questions/27780/where-exactly-classpaths-for-hadoop-are-present-in.html