getMahoutHome() https://github.com/apache/mahout/blob/08e02602e947ff945b9bd73ab5f0b45863df3e53/spark/src/main/scala/org/apache/mahout/sparkbindings/package.scala#L208
seems to not be used anywhere other than the Flink bindings. I personally don't like the idea of REQUIRING mahout to be fully installed- and at the moment, at least for Spark- we don't need to. One can simply use maven coordinates in POM or add them when launching spark job/shell/zeppelin. I'm assuming this method existed to support the old spark-shell, but I'd like to drop it to prevent anyone from introducing new code that relies on it. However since I didn't put it there and don't know all use cases, I want to open up for discussion before I start a JIRA ticket. thoughts? tg
