scalaIDE 与spark2.0 源代码关联
一 scalaIDE maven方式获取spark2.0 源代码
不安装插件，scalaide的maven新建的是java工程，没法使用scala代码。
因此，必须安装scala ide 的maven插件。
步骤：
http://scala-ide.org/docs/tutorials/m2eclipse/
1、安装插件
Using Scala IDE for Eclipse on a Maven Scala project is fairly straightforward.. when all the pieces are in the right place. In this tutorial I will show how to use the Scala IDE on an existing maven project, and how to start with a fresh project.
Install m2eclipse-scala
2、If you don’t have the vanilla Maven Integration for Eclipse, make sure you have enabledCheck all update sites to find required software. If you already ha
