所以我一直在研究Spark，Scala和Hadoop。我目前正在尝试建立我的Scala项目，但它似乎遇到了一些SBT问题。
这是我的build.sbt：
name := "untitled2"
version := "0.1"
scalaVersion := "2.12.5"
val sparkVersion = "2.3.0"
libraryDependencies ++= Seq(
"org.apache.spark" %% "spark-core" % sparkVersion
)
尝试刷新项目后的控制台结果：
Error while importing sbt project:
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=384M; support was removed in 8.0
[info] Loading settings from idea.sbt ...
[info] Loading global plugins from /Users/jeanmac/.sbt/1.0/plugins
[info] Loading project definition from /Users/jeanmac/Downloads/untitled2/project
[info] Loading settings from build.sbt ...
[info] Set current project to untitled2 (in build file:/Users/jeanmac/Downloads/untitled2/)
[info] sbt server started at local:///Users/jeanmac/.sbt/1.0/server/85e9f47a00bae4fc214a/sock
sbt:untitled2>
[info] Defining Global / sbtStructureOptions, Global / sbtStructureOutputFile, shellPrompt
[info] The new values will be used by no settings or tasks.
[info] Reapplying settings...
[info] Set current project to untitled2 (in build file:/Users/jeanmac/Downloads/untitled2/)
[info] Applying State transformations org.jetbrains.sbt.CreateTasks from /Users/jeanmac/Library/Application Support/IntelliJIdea2017.3/Scala/launcher/sbt-structure-1.0.jar
[info] Reapplying settings...
[info] Set current project to untitled2 (in build file:/Users/jeanmac/Downloads/untitled2/)
[info] Updating ...
[warn] module not found: org.apache.spark#spark-core_2.12;2.3.0
[warn] ==== local: tried
[warn] /Users/jeanmac/.ivy2/local/org.apache.spark/spark-core_2.12/2.3.0/ivys/ivy.xml
[warn] ==== public: tried
[warn] https://repo1.maven.org/maven2/org/apache/spark/spark-core_2.12/2.3.0/spark-core_2.12-2.3.0.pom
[warn] ==== local-preloaded-ivy: tried
[warn] /Users/jeanmac/.sbt/preloaded/org.apache.spark/spark-core_2.12/2.3.0/ivys/ivy.xml
[warn] ==== local-preloaded: tried
[warn] file:////Users/jeanmac/.sbt/preloaded/org/apache/spark/spark-core_2.12/2.3.0/spark-core_2.12-2.3.0.pom
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] :: UNRESOLVED DEPENDENCIES ::
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] :: org.apache.spark#spark-core_2.12;2.3.0: not found
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn]
[warn] Note: Unresolved dependencies path:
[warn] org.apache.spark:spark-core_2.12:2.3.0 (/Users/jeanmac/Downloads/untitled2/build.sbt#L9-12)
[warn] +- default:untitled2_2.12:0.1
[error] sbt.librarymanagement.ResolveException: unresolved dependency: org.apache.spark#spark-core_2.12;2.3.0: not found
[error] at sbt.internal.librarymanagement.IvyActions$.resolveAndRetrieve(IvyActions.scala:331)
[error] at sbt.internal.librarymanagement.IvyActions$.$anonfun$updateEither$1(IvyActions.scala:205)
[error] at sbt.internal.librarymanagement.IvySbt$Module.$anonfun$withModule$1(Ivy.scala:243)
[error] at sbt.internal.librarymanagement.IvySbt.$anonfun$withIvy$1(Ivy.scala:204)
[error] at sbt.internal.librarymanagement.IvySbt.sbt$internal$librarymanagement$IvySbt$$action$1(Ivy.scala:70)
[error] at sbt.internal.librarymanagement.IvySbt$$anon$3.call(Ivy.scala:77)
[error] at xsbt.boot.Locks$GlobalLock.withChannel$1(Locks.scala:93)
[error] at xsbt.boot.Locks$GlobalLock.xsbt$boot$Locks$GlobalLock$$withChannelRetries$1(Locks.scala:78)
[error] at xsbt.boot.Locks$GlobalLock$$anonfun$withFileLock$1.apply(Locks.scala:97)
[error] at xsbt.boot.Using$.withResource(Using.scala:10)
[error] at xsbt.boot.Using$.apply(Using.scala:9)
[error] at xsbt.boot.Locks$GlobalLock.ignoringDeadlockAvoided(Locks.scala:58)
[error] at xsbt.boot.Locks$GlobalLock.withLock(Locks.scala:48)
[error] at xsbt.boot.Locks$.apply0(Locks.scala:31)
[error] at xsbt.boot.Locks$.apply(Locks.scala:28)
[error] at sbt.internal.librarymanagement.IvySbt.withDefaultLogger(Ivy.scala:77)
[error] at sbt.internal.librarymanagement.IvySbt.withIvy(Ivy.scala:199)
[error] at sbt.internal.librarymanagement.IvySbt.withIvy(Ivy.scala:196)
[error] at sbt.internal.librarymanagement.IvySbt$Module.withModule(Ivy.scala:242)
[error] at sbt.internal.librarymanagement.IvyActions$.updateEither(IvyActions.scala:190)
[error] at sbt.librarymanagement.ivy.IvyDependencyResolution.update(IvyDependencyResolution.scala:20)
[error] at sbt.librarymanagement.DependencyResolution.update(DependencyResolution.scala:56)
[error] at sbt.internal.LibraryManagement$.resolve$1(LibraryManagement.scala:46)
[error] at sbt.internal.LibraryManagement$.$anonfun$cachedUpdate$12(LibraryManagement.scala:99)
[error] at sbt.util.Tracked$.$anonfun$lastOutput$1(Tracked.scala:68)
[error] at sbt.internal.LibraryManagement$.$anonfun$cachedUpdate$19(LibraryManagement.scala:112)
[error] at scala.util.control.Exception$Catch.apply(Exception.scala:224)
[error] at sbt.internal.LibraryManagement$.$anonfun$cachedUpdate$11(LibraryManagement.scala:112)
[error] at sbt.internal.LibraryManagement$.$anonfun$cachedUpdate$11$adapted(LibraryManagement.scala:95)
[error] at sbt.util.Tracked$.$anonfun$inputChanged$1(Tracked.scala:149)
[error] at sbt.internal.LibraryManagement$.cachedUpdate(LibraryManagement.scala:126)
[error] at sbt.Classpaths$.$anonfun$updateTask$5(Defaults.scala:2383)
[error] at scala.Function1.$anonfun$compose$1(Function1.scala:44)
[error] at sbt.internal.util.$tilde$greater.$anonfun$$u2219$1(TypeFunctions.scala:39)
[error] at sbt.std.Transform$$anon$4.work(System.scala:66)
[error] at sbt.Execute.$anonfun$submit$2(Execute.scala:262)
[error] at sbt.internal.util.ErrorHandling$.wideConvert(ErrorHandling.scala:16)
[error] at sbt.Execute.work(Execute.scala:271)
[error] at sbt.Execute.$anonfun$submit$1(Execute.scala:262)
[error] at sbt.ConcurrentRestrictions$$anon$4.$anonfun$submitValid$1(ConcurrentRestrictions.scala:174)
[error] at sbt.CompletionService$$anon$2.call(CompletionService.scala:36)
[error] at java.util.concurrent.FutureTask.run(FutureTask.java:266)
[error] at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
[error] at java.util.concurrent.FutureTask.run(FutureTask.java:266)
[error] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
[error] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
[error] at java.lang.Thread.run(Thread.java:748)
[error] sbt.librarymanagement.ResolveException: unresolved dependency: org.apache.spark#spark-core_2.12;2.3.0: not found
[error] at sbt.internal.librarymanagement.IvyActions$.resolveAndRetrieve(IvyActions.scala:331)
[error] at sbt.internal.librarymanagement.IvyActions$.$anonfun$updateEither$1(IvyActions.scala:205)
[error] at sbt.internal.librarymanagement.IvySbt$Module.$anonfun$withModule$1(Ivy.scala:243)
[error] at sbt.internal.librarymanagement.IvySbt.$anonfun$withIvy$1(Ivy.scala:204)
[error] at sbt.internal.librarymanagement.IvySbt.sbt$internal$librarymanagement$IvySbt$$action$1(Ivy.scala:70)
[error] at sbt.internal.librarymanagement.IvySbt$$anon$3.call(Ivy.scala:77)
[error] at xsbt.boot.Locks$GlobalLock.withChannel$1(Locks.scala:93)
[error] at xsbt.boot.Locks$GlobalLock.xsbt$boot$Locks$GlobalLock$$withChannelRetries$1(Locks.scala:78)
[error] at xsbt.boot.Locks$GlobalLock$$anonfun$withFileLock$1.apply(Locks.scala:97)
[error] at xsbt.boot.Using$.withResource(Using.scala:10)
[error] at xsbt.boot.Using$.apply(Using.scala:9)
[error] at xsbt.boot.Locks$GlobalLock.ignoringDeadlockAvoided(Locks.scala:58)
[error] at xsbt.boot.Locks$GlobalLock.withLock(Locks.scala:48)
[error] at xsbt.boot.Locks$.apply0(Locks.scala:31)
[error] at xsbt.boot.Locks$.apply(Locks.scala:28)
[error] at sbt.internal.librarymanagement.IvySbt.withDefaultLogger(Ivy.scala:77)
[error] at sbt.internal.librarymanagement.IvySbt.withIvy(Ivy.scala:199)
[error] at sbt.internal.librarymanagement.IvySbt.withIvy(Ivy.scala:196)
[error] at sbt.internal.librarymanagement.IvySbt$Module.withModule(Ivy.scala:242)
[error] at sbt.internal.librarymanagement.IvyActions$.updateEither(IvyActions.scala:190)
[error] at sbt.librarymanagement.ivy.IvyDependencyResolution.update(IvyDependencyResolution.scala:20)
[error] at sbt.librarymanagement.DependencyResolution.update(DependencyResolution.scala:56)
[error] at sbt.internal.LibraryManagement$.resolve$1(LibraryManagement.scala:46)
[error] at sbt.internal.LibraryManagement$.$anonfun$cachedUpdate$12(LibraryManagement.scala:99)
[error] at sbt.util.Tracked$.$anonfun$lastOutput$1(Tracked.scala:68)
[error] at sbt.internal.LibraryManagement$.$anonfun$cachedUpdate$19(LibraryManagement.scala:112)
[error] at scala.util.control.Exception$Catch.apply(Exception.scala:224)
[error] at sbt.internal.LibraryManagement$.$anonfun$cachedUpdate$11(LibraryManagement.scala:112)
[error] at sbt.internal.LibraryManagement$.$anonfun$cachedUpdate$11$adapted(LibraryManagement.scala:95)
[error] at sbt.util.Tracked$.$anonfun$inputChanged$1(Tracked.scala:149)
[error] at sbt.internal.LibraryManagement$.cachedUpdate(LibraryManagement.scala:126)
[error] at sbt.Classpaths$.$anonfun$updateTask$5(Defaults.scala:2383)
[error] at scala.Function1.$anonfun$compose$1(Function1.scala:44)
[error] at sbt.internal.util.$tilde$greater.$anonfun$$u2219$1(TypeFunctions.scala:39)
[error] at sbt.std.Transform$$anon$4.work(System.scala:66)
[error] at sbt.Execute.$anonfun$submit$2(Execute.scala:262)
[error] at sbt.internal.util.ErrorHandling$.wideConvert(ErrorHandling.scala:16)
[error] at sbt.Execute.work(Execute.scala:271)
[error] at sbt.Execute.$anonfun$submit$1(Execute.scala:262)
[error] at sbt.ConcurrentRestrictions$$anon$4.$anonfun$submitValid$1(ConcurrentRestrictions.scala:174)
[error] at sbt.CompletionService$$anon$2.call(CompletionService.scala:36)
[error] at java.util.concurrent.FutureTask.run(FutureTask.java:266)
[error] at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
[error] at java.util.concurrent.FutureTask.run(FutureTask.java:266)
[error] at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
[error] at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
[error] at java.lang.Thread.run(Thread.java:748)
[error] (update) sbt.librarymanagement.ResolveException: unresolved dependency: org.apache.spark#spark-core_2.12;2.3.0: not found
[error] (ssExtractDependencies) sbt.librarymanagement.ResolveException: unresolved dependency: org.apache.spark#spark-core_2.12;2.3.0: not found
[error] Total time: 1 s, completed Mar 20, 2018 8:09:03 PM
[info] shutting down server
所以我一直在网上寻求帮助。大多数结果基于libraryDependencies的编写方式。
以下是有关我当前环境的更多信息：
我目前不知道为什么我的代码无法构建。我不确定我是否遗漏了什么。
答案 0 :(得分：2)
您需要添加一个指向具有这些库的存储库的解析程序。将以下内容添加到您的sbt：
resolvers += "MavenRepository" at "http://central.maven.org/maven2"
更新：
看起来spark团队还没有针对Scala 2.12的构建。在build.sbt中，您当前的scala目标版本是2.12。尝试将其更改为2.11版本。参考：https://issues.apache.org/jira/browse/SPARK-14220