本地Idea运行Spark任务错误：Cannot assign requested address: bind: Service 'sparkDriver'

18/12/17 10:37:20 ERROR SparkContext: Error initializing SparkContext.
java.net.BindException: Cannot assign requested address: bind: Service 'sparkDriver' failed after 16 retries (starting from 0)! Consider explicitly setting the appropriate port for the service 'sparkDriver' (for example spark.ui.port for SparkUI) to an available port or increasing spark.port.maxRetries.
	at sun.nio.ch.Net.bind0(Native Method)
	at sun.nio.ch.Net.bind(Net.java:433)
	at sun.nio.ch.Net.bind(Net.java:425)
	at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)
	at io.netty.channel.socket.nio.NioServerSocketChannel.doBind(NioServerSocketChannel.java:127)
	at io.netty.channel.AbstractChannel$AbstractUnsafe.bind(AbstractChannel.java:501)
	at io.netty.channel.DefaultChannelPipeline$HeadContext.bind(DefaultChannelPipeline.java:1218)
	at io.netty.channel.AbstractChannelHandlerContext.invokeBind(AbstractChannelHandlerContext.java:496)
	at io.netty.channel.AbstractChannelHandlerContext.bind(AbstractChannelHandlerContext.java:481)
	at io.netty.channel.DefaultChannelPipeline.bind(DefaultChannelPipeline.java:965)
	at io.netty.channel.AbstractChannel.bind(AbstractChannel.java:210)
	at io.netty.bootstrap.AbstractBootstrap$2.run(AbstractBootstrap.java:353)
	at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:399)
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:446)
	at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:131)
	at io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:144)
	at java.lang.Thread.run(Thread.java:745)
18/12/17 10:37:20 INFO SparkContext: Successfully stopped SparkContext
Exception in thread "main" java.net.BindException: Cannot assign requested address: bind: Service 'sparkDriver' failed after 16 retries (starting from 0)! Consider explicitly setting the appropriate port for the service 'sparkDriver' (for example spark.ui.port for SparkUI) to an available port or increasing spark.port.maxRetries.
	at sun.nio.ch.Net.bind0(Native Method)
	at sun.nio.ch.Net.bind(Net.java:433)
	at sun.nio.ch.Net.bind(Net.java:425)
	at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)
	at io.netty.channel.socket.nio.NioServerSocketChannel.doBind(NioServerSocketChannel.java:127)
	at io.netty.channel.AbstractChannel$AbstractUnsafe.bind(AbstractChannel.java:501)
	at io.netty.channel.DefaultChannelPipeline$HeadContext.bind(DefaultChannelPipeline.java:1218)
	at io.netty.channel.AbstractChannelHandlerContext.invokeBind(AbstractChannelHandlerContext.java:496)
	at io.netty.channel.AbstractChannelHandlerContext.bind(AbstractChannelHandlerContext.java:481)
	at io.netty.channel.DefaultChannelPipeline.bind(DefaultChannelPipeline.java:965)
	at io.netty.channel.AbstractChannel.bind(AbstractChannel.java:210)
	at io.netty.bootstrap.AbstractBootstrap$2.run(AbstractBootstrap.java:353)
	at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:399)
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:446)
	at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:131)
	at io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:144)
	at java.lang.Thread.run(Thread.java:745)

原因：本机的IP发生了变化，更改本机对应的hosts文件进行IP与主机名映射即可。

hosts文件路径：C:\Windows\System32\drivers\etc\hosts