问题
The problem is the same as described here Error when starting spark-shell local on Mac
... but I have failed to find a solution. I also used to get the malformed URI error but now I get expected hostname.
So when I am not connected to internet, spark shell fails to load in local mode [See the error below]. So I am running Apache Spark 2.1.0 downloaded from internet, running on my Mac. So I run ./bin/spark-shell and it gives me the error below.
So I have read the Spark code and it is using Java's InetAddress.getLocalHost() to find the localhost's IP address. So when I am connected to internet, I get back an IPv4 with my local hostname.
scala> InetAddress.getLocalHost
res9: java.net.InetAddress = AliKheyrollahis-MacBook-Pro.local/192.168.1.26
but the key is, when disconnected, I get an IPv6 with a percentage in the values (it is scoped):
scala> InetAddress.getLocalHost
res10: java.net.InetAddress = AliKheyrollahis-MacBook-Pro.local/fe80:0:0:0:2b9a:4521:a301:e9a5%10
And this IP is the same as the one you see in the error message. I feel my problem is that it throws Spark since it cannot handle %10 in the result.
My guess is this is a bug, probably witnessed by very few since people always connected to internet or their mac does not return a scoped IPv6. Even if I can configure my Mac to get around this issue, I am happy. I have done anything including setting IPv6 to manual or Link-local only to no avail.
I have also tried removing ::1 localhost line in /etc/hosts to no avail.
So here is the full error with DEBUG output (please note the same IPv6 being used to listen):
7/01/28 22:02:59 DEBUG ShutdownHookManager: Adding shutdown hook
17/01/28 22:03:06 DEBUG Shell: setsid is not available on this machine. So not using it.
17/01/28 22:03:06 DEBUG Shell: setsid exited with exit code 0
17/01/28 22:03:06 INFO SparkContext: Running Spark version 2.1.0
17/01/28 22:03:06 DEBUG MutableMetricsFactory: field org.apache.hadoop.metrics2.lib.MutableRate org.apache.hadoop.security.UserGroupInformation$UgiMetrics.loginSuccess with annotation @org.apache.hadoop.metrics2.annotation.Metric(sampleName=Ops, always=false, about=, type=DEFAULT, value=[Rate of successful kerberos logins and latency (milliseconds)], valueName=Time)
17/01/28 22:03:06 DEBUG MutableMetricsFactory: field org.apache.hadoop.metrics2.lib.MutableRate org.apache.hadoop.security.UserGroupInformation$UgiMetrics.loginFailure with annotation @org.apache.hadoop.metrics2.annotation.Metric(sampleName=Ops, always=false, about=, type=DEFAULT, value=[Rate of failed kerberos logins and latency (milliseconds)], valueName=Time)
17/01/28 22:03:06 DEBUG MutableMetricsFactory: field org.apache.hadoop.metrics2.lib.MutableRate org.apache.hadoop.security.UserGroupInformation$UgiMetrics.getGroups with annotation @org.apache.hadoop.metrics2.annotation.Metric(sampleName=Ops, always=false, about=, type=DEFAULT, value=[GetGroups], valueName=Time)
17/01/28 22:03:06 DEBUG MetricsSystemImpl: UgiMetrics, User and group related metrics
17/01/28 22:03:26 DEBUG KerberosName: Kerberos krb5 configuration not found, setting default realm to empty
17/01/28 22:03:26 DEBUG Groups: Creating new Groups object
17/01/28 22:03:26 DEBUG NativeCodeLoader: Trying to load the custom-built native-hadoop library...
17/01/28 22:03:26 DEBUG NativeCodeLoader: Failed to load native-hadoop with error: java.lang.UnsatisfiedLinkError: no hadoop in java.library.path
17/01/28 22:03:26 DEBUG NativeCodeLoader: java.library.path=/Users/aliostad/torch/install/lib:/Users/aliostad/torch/install/lib:/Users/aliostad/torch/install/lib:/Users/aliostad/torch/install/lib:/Users/aliostad/torch/install/lib:/Users/aliostad/torch/install/lib:/Users/aliostad/torch/install/lib::/Users/aliostad/Library/Java/Extensions:/Library/Java/Extensions:/Network/Library/Java/Extensions:/System/Library/Java/Extensions:/usr/lib/java:.
17/01/28 22:03:26 WARN NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
17/01/28 22:03:26 DEBUG PerformanceAdvisory: Falling back to shell based
17/01/28 22:03:26 DEBUG JniBasedUnixGroupsMappingWithFallback: Group mapping impl=org.apache.hadoop.security.ShellBasedUnixGroupsMapping
17/01/28 22:03:27 DEBUG Groups: Group mapping impl=org.apache.hadoop.security.JniBasedUnixGroupsMappingWithFallback; cacheTimeout=300000; warningDeltaMs=5000
17/01/28 22:03:27 DEBUG UserGroupInformation: hadoop login
17/01/28 22:03:27 DEBUG UserGroupInformation: hadoop login commit
17/01/28 22:03:27 DEBUG UserGroupInformation: using local user:UnixPrincipal: aliostad
17/01/28 22:03:27 DEBUG UserGroupInformation: Using user: "UnixPrincipal: aliostad" with name aliostad
17/01/28 22:03:27 DEBUG UserGroupInformation: User entry: "aliostad"
17/01/28 22:03:27 DEBUG UserGroupInformation: UGI loginUser:aliostad (auth:SIMPLE)
17/01/28 22:03:27 INFO SecurityManager: Changing view acls to: aliostad
17/01/28 22:03:27 INFO SecurityManager: Changing modify acls to: aliostad
17/01/28 22:03:27 INFO SecurityManager: Changing view acls groups to:
17/01/28 22:03:27 INFO SecurityManager: Changing modify acls groups to:
17/01/28 22:03:27 INFO SecurityManager: SecurityManager: authentication disabled; ui acls disabled; users with view permissions: Set(aliostad); groups with view permissions: Set(); users with modify permissions: Set(aliostad); groups with modify permissions: Set()
17/01/28 22:03:27 DEBUG SecurityManager: Created SSL options for fs: SSLOptions{enabled=false, keyStore=None, keyStorePassword=None, trustStore=None, trustStorePassword=None, protocol=None, enabledAlgorithms=Set()}
17/01/28 22:03:27 DEBUG InternalLoggerFactory: Using SLF4J as the default logging framework
17/01/28 22:03:27 DEBUG PlatformDependent0: java.nio.Buffer.address: available
17/01/28 22:03:27 DEBUG PlatformDependent0: sun.misc.Unsafe.theUnsafe: available
17/01/28 22:03:27 DEBUG PlatformDependent0: sun.misc.Unsafe.copyMemory: available
17/01/28 22:03:27 DEBUG PlatformDependent0: direct buffer constructor: available
17/01/28 22:03:27 DEBUG PlatformDependent0: java.nio.Bits.unaligned: available, true
17/01/28 22:03:27 DEBUG PlatformDependent0: java.nio.DirectByteBuffer.<init>(long, int): available
17/01/28 22:03:27 DEBUG Cleaner0: java.nio.ByteBuffer.cleaner(): available
17/01/28 22:03:27 DEBUG PlatformDependent: Java version: 8
17/01/28 22:03:27 DEBUG PlatformDependent: -Dio.netty.noUnsafe: false
17/01/28 22:03:27 DEBUG PlatformDependent: sun.misc.Unsafe: available
17/01/28 22:03:27 DEBUG PlatformDependent: -Dio.netty.noJavassist: false
17/01/28 22:03:27 DEBUG PlatformDependent: Javassist: available
17/01/28 22:03:27 DEBUG PlatformDependent: -Dio.netty.tmpdir: /var/folders/pz/vgqg2gns18j_kxsnkzrp6x_m0000gn/T (java.io.tmpdir)
17/01/28 22:03:27 DEBUG PlatformDependent: -Dio.netty.bitMode: 64 (sun.arch.data.model)
17/01/28 22:03:27 DEBUG PlatformDependent: -Dio.netty.noPreferDirect: false
17/01/28 22:03:27 DEBUG PlatformDependent: io.netty.maxDirectMemory: 0 bytes
17/01/28 22:03:27 DEBUG JavassistTypeParameterMatcherGenerator: Generated: io.netty.util.internal.__matchers__.org.apache.spark.network.protocol.MessageMatcher
17/01/28 22:03:27 DEBUG JavassistTypeParameterMatcherGenerator: Generated: io.netty.util.internal.__matchers__.io.netty.buffer.ByteBufMatcher
17/01/28 22:03:27 DEBUG MultithreadEventLoopGroup: -Dio.netty.eventLoopThreads: 8
17/01/28 22:03:27 DEBUG NioEventLoop: -Dio.netty.noKeySetOptimization: false
17/01/28 22:03:27 DEBUG NioEventLoop: -Dio.netty.selectorAutoRebuildThreshold: 512
17/01/28 22:03:27 DEBUG PlatformDependent: org.jctools-core.MpscChunkedArrayQueue: available
17/01/28 22:03:27 DEBUG PooledByteBufAllocator: -Dio.netty.allocator.numHeapArenas: 8
17/01/28 22:03:27 DEBUG PooledByteBufAllocator: -Dio.netty.allocator.numDirectArenas: 8
17/01/28 22:03:27 DEBUG PooledByteBufAllocator: -Dio.netty.allocator.pageSize: 8192
17/01/28 22:03:27 DEBUG PooledByteBufAllocator: -Dio.netty.allocator.maxOrder: 11
17/01/28 22:03:27 DEBUG PooledByteBufAllocator: -Dio.netty.allocator.chunkSize: 16777216
17/01/28 22:03:27 DEBUG PooledByteBufAllocator: -Dio.netty.allocator.tinyCacheSize: 512
17/01/28 22:03:27 DEBUG PooledByteBufAllocator: -Dio.netty.allocator.smallCacheSize: 256
17/01/28 22:03:27 DEBUG PooledByteBufAllocator: -Dio.netty.allocator.normalCacheSize: 64
17/01/28 22:03:27 DEBUG PooledByteBufAllocator: -Dio.netty.allocator.maxCachedBufferCapacity: 32768
17/01/28 22:03:27 DEBUG PooledByteBufAllocator: -Dio.netty.allocator.cacheTrimInterval: 8192
17/01/28 22:03:27 DEBUG ThreadLocalRandom: -Dio.netty.initialSeedUniquifier: 0x3185a000d3a47bd4 (took 1 ms)
17/01/28 22:03:27 DEBUG ByteBufUtil: -Dio.netty.allocator.type: unpooled
17/01/28 22:03:27 DEBUG ByteBufUtil: -Dio.netty.threadLocalDirectBufferSize: 65536
17/01/28 22:03:27 DEBUG ByteBufUtil: -Dio.netty.maxThreadLocalCharBufferSize: 16384
17/01/28 22:03:27 DEBUG NetUtil: Loopback interface: lo0 (lo0, 0:0:0:0:0:0:0:1)
17/01/28 22:03:27 DEBUG NetUtil: /proc/sys/net/core/somaxconn: 128 (non-existent)
17/01/28 22:03:27 DEBUG TransportServer: Shuffle server started on port: 56107
17/01/28 22:03:27 INFO Utils: Successfully started service 'sparkDriver' on port 56107.
17/01/28 22:03:27 DEBUG SparkEnv: Using serializer: class org.apache.spark.serializer.JavaSerializer
17/01/28 22:03:27 INFO SparkEnv: Registering MapOutputTracker
17/01/28 22:03:27 DEBUG MapOutputTrackerMasterEndpoint: init
17/01/28 22:03:27 INFO SparkEnv: Registering BlockManagerMaster
17/01/28 22:03:27 INFO BlockManagerMasterEndpoint: Using org.apache.spark.storage.DefaultTopologyMapper for getting topology information
17/01/28 22:03:27 INFO BlockManagerMasterEndpoint: BlockManagerMasterEndpoint up
17/01/28 22:03:28 INFO DiskBlockManager: Created local directory at /private/var/folders/pz/vgqg2gns18j_kxsnkzrp6x_m0000gn/T/blockmgr-4079e45b-e4e0-4386-bffe-42af18634710
17/01/28 22:03:28 DEBUG DiskBlockManager: Adding shutdown hook
17/01/28 22:03:28 INFO MemoryStore: MemoryStore started with capacity 366.3 MB
17/01/28 22:03:28 INFO SparkEnv: Registering OutputCommitCoordinator
17/01/28 22:03:28 DEBUG OutputCommitCoordinator$OutputCommitCoordinatorEndpoint: init
17/01/28 22:03:28 DEBUG SecurityManager: Created SSL options for ui: SSLOptions{enabled=false, keyStore=None, keyStorePassword=None, trustStore=None, trustStorePassword=None, protocol=None, enabledAlgorithms=Set()}
17/01/28 22:03:28 INFO Utils: Successfully started service 'SparkUI' on port 4040.
17/01/28 22:03:28 INFO SparkUI: Bound SparkUI to 0.0.0.0, and started at http://fe80:0:0:0:2b9a:4521:a301:e9a5%10:4040
17/01/28 22:03:28 INFO Executor: Starting executor ID driver on host localhost
17/01/28 22:03:28 INFO Executor: Using REPL class URI: spark://fe80:0:0:0:2b9a:4521:a301:e9a5%10:56107/classes
17/01/28 22:03:28 ERROR SparkContext: Error initializing SparkContext.
java.lang.AssertionError: assertion failed: Expected hostname
at scala.Predef$.assert(Predef.scala:170)
at org.apache.spark.util.Utils$.checkHost(Utils.scala:931)
at org.apache.spark.util.RpcUtils$.makeDriverRef(RpcUtils.scala:31)
at org.apache.spark.executor.Executor.<init>(Executor.scala:121)
at org.apache.spark.scheduler.local.LocalEndpoint.<init>(LocalSchedulerBackend.scala:59)
at org.apache.spark.scheduler.local.LocalSchedulerBackend.start(LocalSchedulerBackend.scala:126)
at org.apache.spark.scheduler.TaskSchedulerImpl.start(TaskSchedulerImpl.scala:156)
at org.apache.spark.SparkContext.<init>(SparkContext.scala:509)
at org.apache.spark.SparkContext$.getOrCreate(SparkContext.scala:2313)
at org.apache.spark.sql.SparkSession$Builder$$anonfun$6.apply(SparkSession.scala:868)
at org.apache.spark.sql.SparkSession$Builder$$anonfun$6.apply(SparkSession.scala:860)
at scala.Option.getOrElse(Option.scala:121)
at org.apache.spark.sql.SparkSession$Builder.getOrCreate(SparkSession.scala:860)
at org.apache.spark.repl.Main$.createSparkSession(Main.scala:95)
at $line3.$read$$iw$$iw.<init>(<console>:15)
at $line3.$read$$iw.<init>(<console>:42)
at $line3.$read.<init>(<console>:44)
at $line3.$read$.<init>(<console>:48)
at $line3.$read$.<clinit>(<console>)
at $line3.$eval$.$print$lzycompute(<console>:7)
at $line3.$eval$.$print(<console>:6)
at $line3.$eval.$print(<console>)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at scala.tools.nsc.interpreter.IMain$ReadEvalPrint.call(IMain.scala:786)
at scala.tools.nsc.interpreter.IMain$Request.loadAndRun(IMain.scala:1047)
at scala.tools.nsc.interpreter.IMain$WrappedRequest$$anonfun$loadAndRunReq$1.apply(IMain.scala:638)
at scala.tools.nsc.interpreter.IMain$WrappedRequest$$anonfun$loadAndRunReq$1.apply(IMain.scala:637)
at scala.reflect.internal.util.ScalaClassLoader$class.asContext(ScalaClassLoader.scala:31)
at scala.reflect.internal.util.AbstractFileClassLoader.asContext(AbstractFileClassLoader.scala:19)
at scala.tools.nsc.interpreter.IMain$WrappedRequest.loadAndRunReq(IMain.scala:637)
at scala.tools.nsc.interpreter.IMain.interpret(IMain.scala:569)
at scala.tools.nsc.interpreter.IMain.interpret(IMain.scala:565)
at scala.tools.nsc.interpreter.ILoop.interpretStartingWith(ILoop.scala:807)
at scala.tools.nsc.interpreter.ILoop.command(ILoop.scala:681)
at scala.tools.nsc.interpreter.ILoop.processLine(ILoop.scala:395)
at org.apache.spark.repl.SparkILoop$$anonfun$initializeSpark$1.apply$mcV$sp(SparkILoop.scala:38)
at org.apache.spark.repl.SparkILoop$$anonfun$initializeSpark$1.apply(SparkILoop.scala:37)
at org.apache.spark.repl.SparkILoop$$anonfun$initializeSpark$1.apply(SparkILoop.scala:37)
at scala.tools.nsc.interpreter.IMain.beQuietDuring(IMain.scala:214)
at org.apache.spark.repl.SparkILoop.initializeSpark(SparkILoop.scala:37)
at org.apache.spark.repl.SparkILoop.loadFiles(SparkILoop.scala:105)
at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply$mcZ$sp(ILoop.scala:920)
at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply(ILoop.scala:909)
at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply(ILoop.scala:909)
at scala.reflect.internal.util.ScalaClassLoader$.savingContextLoader(ScalaClassLoader.scala:97)
at scala.tools.nsc.interpreter.ILoop.process(ILoop.scala:909)
at org.apache.spark.repl.Main$.doMain(Main.scala:68)
at org.apache.spark.repl.Main$.main(Main.scala:51)
at org.apache.spark.repl.Main.main(Main.scala)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.apache.spark.deploy.SparkSubmit$.org$apache$spark$deploy$SparkSubmit$$runMain(SparkSubmit.scala:738)
at org.apache.spark.deploy.SparkSubmit$.doRunMain$1(SparkSubmit.scala:187)
at org.apache.spark.deploy.SparkSubmit$.submit(SparkSubmit.scala:212)
at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:126)
at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)
17/01/28 22:03:28 INFO SparkUI: Stopped Spark web UI at http://fe80:0:0:0:2b9a:4521:a301:e9a5%10:4040
17/01/28 22:03:28 ERROR Utils: Uncaught exception in thread main
java.lang.NullPointerException
at org.apache.spark.scheduler.local.LocalSchedulerBackend.org$apache$spark$scheduler$local$LocalSchedulerBackend$$stop(LocalSchedulerBackend.scala:158)
at org.apache.spark.scheduler.local.LocalSchedulerBackend.stop(LocalSchedulerBackend.scala:137)
at org.apache.spark.scheduler.TaskSchedulerImpl.stop(TaskSchedulerImpl.scala:467)
at org.apache.spark.scheduler.DAGScheduler.stop(DAGScheduler.scala:1588)
at org.apache.spark.SparkContext$$anonfun$stop$8.apply$mcV$sp(SparkContext.scala:1826)
at org.apache.spark.util.Utils$.tryLogNonFatalError(Utils.scala:1283)
at org.apache.spark.SparkContext.stop(SparkContext.scala:1825)
at org.apache.spark.SparkContext.<init>(SparkContext.scala:587)
at org.apache.spark.SparkContext$.getOrCreate(SparkContext.scala:2313)
at org.apache.spark.sql.SparkSession$Builder$$anonfun$6.apply(SparkSession.scala:868)
at org.apache.spark.sql.SparkSession$Builder$$anonfun$6.apply(SparkSession.scala:860)
at scala.Option.getOrElse(Option.scala:121)
at org.apache.spark.sql.SparkSession$Builder.getOrCreate(SparkSession.scala:860)
at org.apache.spark.repl.Main$.createSparkSession(Main.scala:95)
at $line3.$read$$iw$$iw.<init>(<console>:15)
at $line3.$read$$iw.<init>(<console>:42)
at $line3.$read.<init>(<console>:44)
at $line3.$read$.<init>(<console>:48)
at $line3.$read$.<clinit>(<console>)
at $line3.$eval$.$print$lzycompute(<console>:7)
at $line3.$eval$.$print(<console>:6)
at $line3.$eval.$print(<console>)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at scala.tools.nsc.interpreter.IMain$ReadEvalPrint.call(IMain.scala:786)
at scala.tools.nsc.interpreter.IMain$Request.loadAndRun(IMain.scala:1047)
at scala.tools.nsc.interpreter.IMain$WrappedRequest$$anonfun$loadAndRunReq$1.apply(IMain.scala:638)
at scala.tools.nsc.interpreter.IMain$WrappedRequest$$anonfun$loadAndRunReq$1.apply(IMain.scala:637)
at scala.reflect.internal.util.ScalaClassLoader$class.asContext(ScalaClassLoader.scala:31)
at scala.reflect.internal.util.AbstractFileClassLoader.asContext(AbstractFileClassLoader.scala:19)
at scala.tools.nsc.interpreter.IMain$WrappedRequest.loadAndRunReq(IMain.scala:637)
at scala.tools.nsc.interpreter.IMain.interpret(IMain.scala:569)
at scala.tools.nsc.interpreter.IMain.interpret(IMain.scala:565)
at scala.tools.nsc.interpreter.ILoop.interpretStartingWith(ILoop.scala:807)
at scala.tools.nsc.interpreter.ILoop.command(ILoop.scala:681)
at scala.tools.nsc.interpreter.ILoop.processLine(ILoop.scala:395)
at org.apache.spark.repl.SparkILoop$$anonfun$initializeSpark$1.apply$mcV$sp(SparkILoop.scala:38)
at org.apache.spark.repl.SparkILoop$$anonfun$initializeSpark$1.apply(SparkILoop.scala:37)
at org.apache.spark.repl.SparkILoop$$anonfun$initializeSpark$1.apply(SparkILoop.scala:37)
at scala.tools.nsc.interpreter.IMain.beQuietDuring(IMain.scala:214)
at org.apache.spark.repl.SparkILoop.initializeSpark(SparkILoop.scala:37)
at org.apache.spark.repl.SparkILoop.loadFiles(SparkILoop.scala:105)
at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply$mcZ$sp(ILoop.scala:920)
at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply(ILoop.scala:909)
at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply(ILoop.scala:909)
at scala.reflect.internal.util.ScalaClassLoader$.savingContextLoader(ScalaClassLoader.scala:97)
at scala.tools.nsc.interpreter.ILoop.process(ILoop.scala:909)
at org.apache.spark.repl.Main$.doMain(Main.scala:68)
at org.apache.spark.repl.Main$.main(Main.scala:51)
at org.apache.spark.repl.Main.main(Main.scala)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.apache.spark.deploy.SparkSubmit$.org$apache$spark$deploy$SparkSubmit$$runMain(SparkSubmit.scala:738)
at org.apache.spark.deploy.SparkSubmit$.doRunMain$1(SparkSubmit.scala:187)
at org.apache.spark.deploy.SparkSubmit$.submit(SparkSubmit.scala:212)
at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:126)
at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)
17/01/28 22:03:28 INFO MapOutputTrackerMasterEndpoint: MapOutputTrackerMasterEndpoint stopped!
17/01/28 22:03:28 INFO MemoryStore: MemoryStore cleared
17/01/28 22:03:28 INFO BlockManager: BlockManager stopped
17/01/28 22:03:28 INFO BlockManagerMaster: BlockManagerMaster stopped
17/01/28 22:03:28 WARN MetricsSystem: Stopping a MetricsSystem that is not running
17/01/28 22:03:28 INFO OutputCommitCoordinator$OutputCommitCoordinatorEndpoint: OutputCommitCoordinator stopped!
17/01/28 22:03:28 INFO SparkContext: Successfully stopped SparkContext
java.lang.AssertionError: assertion failed: Expected hostname
at scala.Predef$.assert(Predef.scala:170)
at org.apache.spark.util.Utils$.checkHost(Utils.scala:931)
at org.apache.spark.util.RpcUtils$.makeDriverRef(RpcUtils.scala:31)
at org.apache.spark.executor.Executor.<init>(Executor.scala:121)
at org.apache.spark.scheduler.local.LocalEndpoint.<init>(LocalSchedulerBackend.scala:59)
at org.apache.spark.scheduler.local.LocalSchedulerBackend.start(LocalSchedulerBackend.scala:126)
at org.apache.spark.scheduler.TaskSchedulerImpl.start(TaskSchedulerImpl.scala:156)
at org.apache.spark.SparkContext.<init>(SparkContext.scala:509)
at org.apache.spark.SparkContext$.getOrCreate(SparkContext.scala:2313)
at org.apache.spark.sql.SparkSession$Builder$$anonfun$6.apply(SparkSession.scala:868)
at org.apache.spark.sql.SparkSession$Builder$$anonfun$6.apply(SparkSession.scala:860)
at scala.Option.getOrElse(Option.scala:121)
at org.apache.spark.sql.SparkSession$Builder.getOrCreate(SparkSession.scala:860)
at org.apache.spark.repl.Main$.createSparkSession(Main.scala:95)
... 47 elided
<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_40)
Type in expressions to have them evaluated.
Type :help for more information.
回答1:
OK, I seem to be able to get around it by passing configuration directly --conf spark.driver.host=localhost
So I run:
./bin/spark-shell --conf spark.driver.host=localhost
Still if there is a better solution, please let me know.
[UPDATE]
Jacek Laskowski confirmed this is probably the only available solution for now.
回答2:
To those who are working with spark through sbt and having the same issue. Just add .set("spark.driver.host", "localhost") to your SparkConf() so initialisation of spark context will look like this:
val conf =
new SparkConf()
.setAppName( "temp1" )
.setMaster( "local" )
.set( "spark.driver.host", "localhost" )
val sc =
SparkContext
.getOrCreate( conf )
This initial configuration must be done before any other getOrCreate of SparkContext.
回答3:
I faced the same issue while using the SharedSparkContext with my tests. Adding those two lines (in my beforeAll method) as @dennis suggested solved the problem for me :
override def beforeAll(): Unit = {
super.beforeAll()
sc.getConf.setMaster("local").set("spark.driver.host", "localhost")
}
I hope this will be solved in the next versions of Spark.
回答4:
If you are using pyspark, use the config method to set the host driver to localhost.
spark = (SparkSession
.builder
.appName( "temp1" )
.config( "spark.driver.host", "localhost" )
.getOrCreate()
)
回答5:
I am not sure if this will help you, but it solved my problem on Mac.
1) Get your hostname. (In terminal, this is usually the first part of the line (before the @ in Linux, before the : in Mac)) (In Mac, you can also type hostname in terminal to get your hostname)
2) In /etc/hosts add:
127.0.0.1 whatever-your-hostname-is
For me, I originally had
127.0.0.1 localhost
but I changed it to
127.0.0.1 my-hostname
Save this change and retry pyspark.
I got this solution from this stackoverflow: Mac spark-shell Error initializing SparkContext
I hope this helps you.
来源：https://stackoverflow.com/questions/41914586/spark-fails-to-start-in-local-mode-when-disconnected-possible-bug-in-handling-i