单机运行Spark Shell遇到的一个低级错误

[root@sk1 spark-2.1.0-bin-hadoop2.7]# bin/spark-shell 
Using Spark's default log4j profile: org/apache/spark/log4j-defaults.properties
Setting default log level to "WARN".
To adjust logging level use sc.setLogLevel(newLevel). For SparkR, use setLogLevel(newLevel).
17/04/07 22:33:37 WARN NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
17/04/07 22:33:38 WARN Utils: Service 'sparkDriver' could not bind on port 0. Attempting port 1.
17/04/07 22:33:38 WARN Utils: Service 'sparkDriver' could not bind on port 0. Attempting port 1.
17/04/07 22:33:38 WARN Utils: Service 'sparkDriver' could not bind on port 0. Attempting port 1.
17/04/07 22:33:38 WARN Utils: Service 'sparkDriver' could not bind on port 0. Attempting port 1.
17/04/07 22:33:38 WARN Utils: Service 'sparkDriver' could not bind on port 0. Attempting port 1.
17/04/07 22:33:38 WARN Utils: Service 'sparkDriver' could not bind on port 0. Attempting port 1.
17/04/07 22:33:38 WARN Utils: Service 'sparkDriver' could not bind on port 0. Attempting port 1.
17/04/07 22:33:38 WARN Utils: Service 'sparkDriver' could not bind on port 0. Attempting port 1.
17/04/07 22:33:38 WARN Utils: Service 'sparkDriver' could not bind on port 0. Attempting port 1.
17/04/07 22:33:38 WARN Utils: Service 'sparkDriver' could not bind on port 0. Attempting port 1.
17/04/07 22:33:38 WARN Utils: Service 'sparkDriver' could not bind on port 0. Attempting port 1.
17/04/07 22:33:38 WARN Utils: Service 'sparkDriver' could not bind on port 0. Attempting port 1.
17/04/07 22:33:38 WARN Utils: Service 'sparkDriver' could not bind on port 0. Attempting port 1.
17/04/07 22:33:38 WARN Utils: Service 'sparkDriver' could not bind on port 0. Attempting port 1.
17/04/07 22:33:38 WARN Utils: Service 'sparkDriver' could not bind on port 0. Attempting port 1.
17/04/07 22:33:38 WARN Utils: Service 'sparkDriver' could not bind on port 0. Attempting port 1.
17/04/07 22:33:38 ERROR SparkContext: Error initializing SparkContext.
java.net.BindException: Cannot assign requested address: 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:506)
    at io.netty.channel.AbstractChannelHandlerContext.bind(AbstractChannelHandlerContext.java:491)
    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:408)
    at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:455)
    at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:140)
    at io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:144)
    at java.lang.Thread.run(Thread.java:745)
java.net.BindException: Cannot assign requested address: 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:506)
  at io.netty.channel.AbstractChannelHandlerContext.bind(AbstractChannelHandlerContext.java:491)
  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:408)
  at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:455)
  at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:140)
  at io.netty.util.concurrent.DefaultThreadFactory$DefaultRunnableDecorator.run(DefaultThreadFactory.java:144)
  at java.lang.Thread.run(Thread.java:745)
<console>:14: error: not found: value spark
       import spark.implicits._
              ^
<console>:14: error: not found: value spark
       import spark.sql
              ^
Welcome to
      ____              __
     / __/__  ___ _____/ /__
    _\ \/ _ \/ _ `/ __/  '_/
   /___/ .__/\_,_/_/ /_/\_\   version 2.1.0
      /_/

Using Scala version 2.11.8 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_112)
Type in expressions to have them evaluated.
Type :help for more information.

scala>

[root@sk1 ~]# ifconfig
ens32: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.11.138  netmask 255.255.255.0  broadcast 192.168.11.255
        inet6 fe80::a8bd:a097:8ca9:d22a  prefixlen 64  scopeid 0x20<link>
        ether 00:0c:29:c3:3e:9a  txqueuelen 1000  (Ethernet)
        RX packets 273939  bytes 395373188 (377.0 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 16657  bytes 2472671 (2.3 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1  (Local Loopback)
        RX packets 276  bytes 23980 (23.4 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 276  bytes 23980 (23.4 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

[root@sk1 ~]# cat /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.1.138   sk1

[root@sk1 ~]# vi /etc/hosts
127.0.0.1   localhost localhost.localdomain localhost4 localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.11.138  sk1

[root@sk1 spark-2.1.0-bin-hadoop2.7]# bin/spark-shell 
Using Spark's default log4j profile: org/apache/spark/log4j-defaults.properties
Setting default log level to "WARN".
To adjust logging level use sc.setLogLevel(newLevel). For SparkR, use setLogLevel(newLevel).
17/04/07 22:41:20 WARN NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
17/04/07 22:41:32 WARN ObjectStore: Version information not found in metastore. hive.metastore.schema.verification is not enabled so recording the schema version 1.2.0
17/04/07 22:41:33 WARN ObjectStore: Failed to get database default, returning NoSuchObjectException
17/04/07 22:41:34 WARN ObjectStore: Failed to get database global_temp, returning NoSuchObjectException
Spark context Web UI available at http://192.168.11.138:4040
Spark context available as 'sc' (master = local[*], app id = local-1491619281633).
Spark session available as 'spark'.
Welcome to
      ____              __
     / __/__  ___ _____/ /__
    _\ \/ _ \/ _ `/ __/  '_/
   /___/ .__/\_,_/_/ /_/\_\   version 2.1.0
      /_/

Using Scala version 2.11.8 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_112)
Type in expressions to have them evaluated.
Type :help for more information.

scala>