I’ve been working on a logging issue when building segments using Hadoop - the expected logging output from the map task isn’t showing up. While poking around the jars on the classpath, I noticed that many of the plugins include logging implementations, which can mess with the Log4J-based Hadoop logging configuration. It seems odd that plugins would including logging classes in their builds, as the pinot-all jar has Log4J logging classes inside it. Thoughts on this?