报错是：

18/07/25 11:21:13 ERROR SparkContext: Error initializing SparkContext.

java.net.BindException: Can't assign requested address: Service 'sparkDriver' failed after 16 retries!

发生了什么？？？

18/07/25 11:21:13 ERROR SparkContext: Error initializing SparkContext.

java.net.BindException: Can't assign requested address: Service 'sparkDriver' failed after 16 retries!

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 sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)

at io.netty.channel.socket.nio.NioServerSocketChannel.doBind(NioServerSocketChannel.java:125)

at io.netty.channel.AbstractChannel$AbstractUnsafe.bind(AbstractChannel.java:485)

at io.netty.channel.DefaultChannelPipeline$HeadContext.bind(DefaultChannelPipeline.java:1089)

at io.netty.channel.AbstractChannelHandlerContext.invokeBind(AbstractChannelHandlerContext.java:430)

at io.netty.channel.AbstractChannelHandlerContext.bind(AbstractChannelHandlerContext.java:415)

at io.netty.channel.DefaultChannelPipeline.bind(DefaultChannelPipeline.java:903)

at io.netty.channel.AbstractChannel.bind(AbstractChannel.java:198)

at io.netty.bootstrap.AbstractBootstrap$2.run(AbstractBootstrap.java:348)

at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:357)

at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:357)

at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:111)

at java.lang.Thread.run(Thread.java:748)

18/07/25 11:21:13 INFO SparkContext: Successfully stopped SparkContext

Exception in thread "main" java.net.BindException: Can't assign requested address: Service 'sparkDriver' failed after 16 retries!

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 sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)

at io.netty.channel.socket.nio.NioServerSocketChannel.doBind(NioServerSocketChannel.java:125)

at io.netty.channel.AbstractChannel$AbstractUnsafe.bind(AbstractChannel.java:485)

at io.netty.channel.DefaultChannelPipeline$HeadContext.bind(DefaultChannelPipeline.java:1089)

at io.netty.channel.AbstractChannelHandlerContext.invokeBind(AbstractChannelHandlerContext.java:430)

at io.netty.channel.AbstractChannelHandlerContext.bind(AbstractChannelHandlerContext.java:415)

at io.netty.channel.DefaultChannelPipeline.bind(DefaultChannelPipeline.java:903)

at io.netty.channel.AbstractChannel.bind(AbstractChannel.java:198)

at io.netty.bootstrap.AbstractBootstrap$2.run(AbstractBootstrap.java:348)

at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:357)

at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:357)

at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:111)

at java.lang.Thread.run(Thread.java:748)