本地模式是不需要Hadoop吗，为什么启动spark-shell总是报错连接Hadoop失败，困扰好久了，求解答？

17/05/11 03:23:51 INFO DataNucleus.Datastore: The class "org.apache.hadoop.hive.metastore.model.MResourceUri" is tagged as "embedded-only" so does not have its own datastore table.

java.lang.RuntimeException: java.net.ConnectException: Call From umbrella.local/192.168.12.100 to localhost:9000 failed on connection exception: java.net.ConnectException: Connection refused; For more details see:  http://wiki.apache.org/hadoop/ConnectionRefused

at org.apache.hadoop.hive.ql.session.SessionState.start(SessionState.java:522)

at org.apache.spark.sql.hive.client.ClientWrapper.<init>(ClientWrapper.scala:204)

at org.apache.spark.sql.hive.client.IsolatedClientLoader.createClient(IsolatedClientLoader.scala:238)

at org.apache.spark.sql.hive.HiveContext.executionHive$lzycompute(HiveContext.scala:218)

at org.apache.spark.sql.hive.HiveContext.executionHive(HiveContext.scala:208)

at org.apache.spark.sql.hive.HiveContext.functionRegistry$lzycompute(HiveContext.scala:462)

at org.apache.spark.sql.hive.HiveContext.functionRegistry(HiveContext.scala:461)

at org.apache.spark.sql.UDFRegistration.<init>(UDFRegistration.scala:40)

at org.apache.spark.sql.SQLContext.<init>(SQLContext.scala:330)

at org.apache.spark.sql.hive.HiveContext.<init>(HiveContext.scala:90)

at org.apache.spark.sql.hive.HiveContext.<init>(HiveContext.scala:101)

at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)

at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)

at java.lang.reflect.Constructor.newInstance(Constructor.java:423)

at org.apache.spark.repl.SparkILoop.createSQLContext(SparkILoop.scala:1028)

at $iwC$$iwC.<init>(<console>:15)

at $iwC.<init>(<console>:24)

at <init>(<console>:26)

at .<init>(<console>:30)

at .<clinit>(<console>)

at .<init>(<console>:7)

at .<clinit>(<console>)

at $print(<console>)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

at org.apache.spark.repl.SparkIMain$ReadEvalPrint.call(SparkIMain.scala:1065)

at org.apache.spark.repl.SparkIMain$Request.loadAndRun(SparkIMain.scala:1346)

at org.apache.spark.repl.SparkIMain.loadAndRunReq$1(SparkIMain.scala:840)

at org.apache.spark.repl.SparkIMain.interpret(SparkIMain.scala:871)

at org.apache.spark.repl.SparkIMain.interpret(SparkIMain.scala:819)

at org.apache.spark.repl.SparkILoop.reallyInterpret$1(SparkILoop.scala:857)

at org.apache.spark.repl.SparkILoop.interpretStartingWith(SparkILoop.scala:902)

at org.apache.spark.repl.SparkILoop.command(SparkILoop.scala:814)

at org.apache.spark.repl.SparkILoopInit$$anonfun$initializeSpark$1.apply(SparkILoopInit.scala:132)

at org.apache.spark.repl.SparkILoopInit$$anonfun$initializeSpark$1.apply(SparkILoopInit.scala:124)

at org.apache.spark.repl.SparkIMain.beQuietDuring(SparkIMain.scala:324)

at org.apache.spark.repl.SparkILoopInit$class.initializeSpark(SparkILoopInit.scala:124)

at org.apache.spark.repl.SparkILoop.initializeSpark(SparkILoop.scala:64)

at org.apache.spark.repl.SparkILoop$$anonfun$org$apache$spark$repl$SparkILoop$$process$1$$anonfun$apply$mcZ$sp$5.apply$mcV$sp(SparkILoop.scala:974)

at org.apache.spark.repl.SparkILoopInit$class.runThunks(SparkILoopInit.scala:159)

at org.apache.spark.repl.SparkILoop.runThunks(SparkILoop.scala:64)

at org.apache.spark.repl.SparkILoopInit$class.postInitialization(SparkILoopInit.scala:108)

at org.apache.spark.repl.SparkILoop.postInitialization(SparkILoop.scala:64)

at org.apache.spark.repl.SparkILoop$$anonfun$org$apache$spark$repl$SparkILoop$$process$1.apply$mcZ$sp(SparkILoop.scala:991)

at org.apache.spark.repl.SparkILoop$$anonfun$org$apache$spark$repl$SparkILoop$$process$1.apply(SparkILoop.scala:945)

at org.apache.spark.repl.SparkILoop$$anonfun$org$apache$spark$repl$SparkILoop$$process$1.apply(SparkILoop.scala:945)

at scala.tools.nsc.util.ScalaClassLoader$.savingContextLoader(ScalaClassLoader.scala:135)

at org.apache.spark.repl.SparkILoop.org$apache$spark$repl$SparkILoop$$process(SparkILoop.scala:945)

at org.apache.spark.repl.SparkILoop.process(SparkILoop.scala:1059)

at org.apache.spark.repl.Main$.main(Main.scala:31)

at org.apache.spark.repl.Main.main(Main.scala)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

at org.apache.spark.deploy.SparkSubmit$.org$apache$spark$deploy$SparkSubmit$$runMain(SparkSubmit.scala:731)

at org.apache.spark.deploy.SparkSubmit$.doRunMain$1(SparkSubmit.scala:181)

at org.apache.spark.deploy.SparkSubmit$.submit(SparkSubmit.scala:206)

at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:121)

at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)

Caused by: java.net.ConnectException: Call From umbrella.local/192.168.12.100 to localhost:9000 failed on connection exception: java.net.ConnectException: Connection refused; For more details see:  http://wiki.apache.org/hadoop/ConnectionRefused

at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)

at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)

at java.lang.reflect.Constructor.newInstance(Constructor.java:423)

at org.apache.hadoop.net.NetUtils.wrapWithMessage(NetUtils.java:791)

at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:731)

at org.apache.hadoop.ipc.Client.call(Client.java:1472)

at org.apache.hadoop.ipc.Client.call(Client.java:1399)

at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:232)

at com.sun.proxy.$Proxy22.getFileInfo(Unknown Source)

at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.getFileInfo(ClientNamenodeProtocolTranslatorPB.java:752)

at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

at java.lang.reflect.Method.invoke(Method.java:498)

at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:187)

at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:102)

at com.sun.proxy.$Proxy23.getFileInfo(Unknown Source)

at org.apache.hadoop.hdfs.DFSClient.getFileInfo(DFSClient.java:1988)

at org.apache.hadoop.hdfs.DistributedFileSystem$18.doCall(DistributedFileSystem.java:1118)

at org.apache.hadoop.hdfs.DistributedFileSystem$18.doCall(DistributedFileSystem.java:1114)

at org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)

at org.apache.hadoop.hdfs.DistributedFileSystem.getFileStatus(DistributedFileSystem.java:1114)

at org.apache.hadoop.fs.FileSystem.exists(FileSystem.java:1400)

at org.apache.hadoop.hive.ql.session.SessionState.createRootHDFSDir(SessionState.java:596)

at org.apache.hadoop.hive.ql.session.SessionState.createSessionDirs(SessionState.java:554)

at org.apache.hadoop.hive.ql.session.SessionState.start(SessionState.java:508)

... 62 more

Caused by: java.net.ConnectException: Connection refused

at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)

at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)

at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206)

at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:530)

at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:494)

at org.apache.hadoop.ipc.Client$Connection.setupConnection(Client.java:607)

at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:705)

at org.apache.hadoop.ipc.Client$Connection.access$2800(Client.java:368)

at org.apache.hadoop.ipc.Client.getConnection(Client.java:1521)

at org.apache.hadoop.ipc.Client.call(Client.java:1438)

... 82 more

<console>:16: error: not found: value sqlContext

         import sqlContext.implicits._

                ^

<console>:16: error: not found: value sqlContext

         import sqlContext.sql

                ^