spark报错:Failed to get the application information. If you are starting up Spark, please wait a while until it's ready.
scala教程:集合的zip拉链
scala教程:集合的intersection交集、union并集、diff差集
scala教程:集合截取、删除、翻转、排序等通用方法
scala教程:Map(可变)
scala教程:Map(不可变)
Logback Appender-ConsoleAppender介绍
scala教程:可变数组
Logback Appender 介绍
Logback Appender