Unresolved dependency issue when compiling spark project with sbt - scala

Question

I am trying to compile with sbt 0.13.8 a very simple spark project whose only function is
Test.scala
import org.apache.spark.SparkContext
import org.apache.spark.SparkContext._
import org.apache.spark.SparkConf
object SimpleApp {
def main(args: Array[String]) {
val logFile = "YOUR_SPARK_HOME/README.md" // Should be some file on your system
val conf = new SparkConf().setAppName("Simple Application")
val sc = new SparkContext(conf)
val logData = sc.textFile(logFile, 2).cache()
val numAs = logData.filter(line => line.contains("a")).count()
val numBs = logData.filter(line => line.contains("b")).count()
println("Lines with a: %s, Lines with b: %s".format(numAs, numBs))
}
}
The build.sbt file in the projet root is as follows:
name := "Test"
version := "1.0"
scalaVersion := "2.11.7"
libraryDependencies += "org.apache.spark" %% "spark-core" % "1.5.2"
resolvers ++= Seq(
"Apache Repository" at "https://repository.apache.org/content/repositories/releases/",
"Cloudera Repository" at "https://repository.cloudera.com/artifactory/cloudera-repos/",
Resolver.sonatypeRepo("public")
)
The error return by sbt compile is:
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] :: UNRESOLVED DEPENDENCIES ::
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] :: oro#oro;2.0.8: configuration not found in oro#oro;2.0.8: 'master(compile)'. Missing configuration: 'compile'. It was required from org.apache.spark#spark-core_2.11;1.5.2 compile
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn]
[warn] Note: Unresolved dependencies path:
[warn] oro:oro:2.0.8
[warn] +- org.apache.spark:spark-core_2.11:1.5.2 (/home/osboxes/Documents/bookings/Test/build.sbt#L7-8)
[warn] +- default:test_2.11:1.0
sbt.ResolveException: unresolved dependency: oro#oro;2.0.8: configuration not found in oro#oro;2.0.8: 'master(compile)'. Missing configuration: 'compile'. It was required from org.apache.spark#spark-core_2.11;1.5.2 compile
at sbt.IvyActions$.sbt$IvyActions$$resolve(IvyActions.scala:291)
at sbt.IvyActions$$anonfun$updateEither$1.apply(IvyActions.scala:188)
at sbt.IvyActions$$anonfun$updateEither$1.apply(IvyActions.scala:165)
at sbt.IvySbt$Module$$anonfun$withModule$1.apply(Ivy.scala:155)
at sbt.IvySbt$Module$$anonfun$withModule$1.apply(Ivy.scala:155)
at sbt.IvySbt$$anonfun$withIvy$1.apply(Ivy.scala:132)
at sbt.IvySbt.sbt$IvySbt$$action$1(Ivy.scala:57)
at sbt.IvySbt$$anon$4.call(Ivy.scala:65)
at xsbt.boot.Locks$GlobalLock.withChannel$1(Locks.scala:93)
at xsbt.boot.Locks$GlobalLock.xsbt$boot$Locks$GlobalLock$$withChannelRetries$1(Locks.scala:78)
at xsbt.boot.Locks$GlobalLock$$anonfun$withFileLock$1.apply(Locks.scala:97)
at xsbt.boot.Using$.withResource(Using.scala:10)
at xsbt.boot.Using$.apply(Using.scala:9)
at xsbt.boot.Locks$GlobalLock.ignoringDeadlockAvoided(Locks.scala:58)
at xsbt.boot.Locks$GlobalLock.withLock(Locks.scala:48)
at xsbt.boot.Locks$.apply0(Locks.scala:31)
at xsbt.boot.Locks$.apply(Locks.scala:28)
at sbt.IvySbt.withDefaultLogger(Ivy.scala:65)
at sbt.IvySbt.withIvy(Ivy.scala:127)
at sbt.IvySbt.withIvy(Ivy.scala:124)
at sbt.IvySbt$Module.withModule(Ivy.scala:155)
at sbt.IvyActions$.updateEither(IvyActions.scala:165)
at sbt.Classpaths$$anonfun$sbt$Classpaths$$work$1$1.apply(Defaults.scala:1369)
at sbt.Classpaths$$anonfun$sbt$Classpaths$$work$1$1.apply(Defaults.scala:1365)
at sbt.Classpaths$$anonfun$doWork$1$1$$anonfun$87.apply(Defaults.scala:1399)
at sbt.Classpaths$$anonfun$doWork$1$1$$anonfun$87.apply(Defaults.scala:1397)
at sbt.Tracked$$anonfun$lastOutput$1.apply(Tracked.scala:37)
at sbt.Classpaths$$anonfun$doWork$1$1.apply(Defaults.scala:1402)
at sbt.Classpaths$$anonfun$doWork$1$1.apply(Defaults.scala:1396)
at sbt.Tracked$$anonfun$inputChanged$1.apply(Tracked.scala:60)
at sbt.Classpaths$.cachedUpdate(Defaults.scala:1419)
at sbt.Classpaths$$anonfun$updateTask$1.apply(Defaults.scala:1348)
at sbt.Classpaths$$anonfun$updateTask$1.apply(Defaults.scala:1310)
at scala.Function1$$anonfun$compose$1.apply(Function1.scala:47)
at sbt.$tilde$greater$$anonfun$$u2219$1.apply(TypeFunctions.scala:40)
at sbt.std.Transform$$anon$4.work(System.scala:63)
at sbt.Execute$$anonfun$submit$1$$anonfun$apply$1.apply(Execute.scala:226)
at sbt.Execute$$anonfun$submit$1$$anonfun$apply$1.apply(Execute.scala:226)
at sbt.ErrorHandling$.wideConvert(ErrorHandling.scala:17)
at sbt.Execute.work(Execute.scala:235)
at sbt.Execute$$anonfun$submit$1.apply(Execute.scala:226)
at sbt.Execute$$anonfun$submit$1.apply(Execute.scala:226)
at sbt.ConcurrentRestrictions$$anon$4$$anonfun$1.apply(ConcurrentRestrictions.scala:159)
at sbt.CompletionService$$anon$2.call(CompletionService.scala:28)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
[error] (*:update) sbt.ResolveException: unresolved dependency: oro#oro;2.0.8: configuration not found in oro#oro;2.0.8: 'master(compile)'. Missing configuration: 'compile'. It was required from org.apache.spark#spark-core_2.11;1.5.2 compile
How could I solve this dependency issue?
EDIT
I have followed the #mark91's advice:
change scala version to 2.10.5
change the spark dependency to libraryDependencies += "org.apache.spark" % "spark-core_2.10" % "1.2.0-cdh5.3.2" % "provided".
However I still get an unresolved dependency in org.scala-lang#scala-library;2.10.4 :
[error] sbt.ResolveException: unresolved dependency: org.scala-lang#scala-library;2.10.4: configuration not found in org.scala-lang#scala-library;2.10.4: 'master(compile)'. Missing configuration: 'compile'. It was required from org.apache.spark#spark-core_2.10;1.2.0-cdh5.3.2 compile
Do you have any idea of why I get this problem?

Answer 1

Your problem is that Spark is written with Scala 2.10. So you should use version 2.10 of Scala instead of 2.11.
Example:
scalaVersion := "2.10.5"
libraryDependencies += "org.apache.spark" % "spark-core_2.10" % "1.2.0-cdh5.3.2" % "provided"
resolvers += "Cloudera Repository" at "https://repository.cloudera.com/artifactory/cloudera-repos/"

Answer 2

I had a similar dependency issue and solved it by reloading plugins and updating dependencies. I think your dependency issue is due to Ivy cache. Normally, if no dependency management configuration has changed since the last successful resolution and the retrieved files are still present, sbt does not ask Ivy to perform resolution.
Try running:
sbt reload plugins
sbt update
sbt reload
If that doesn't work, follow instructions on http://www.scala-sbt.org/0.13/docs/Dependency-Management-Flow.html

Answer 3

Same Reason as #mgaido: Using different version of Scala cause this problem.
But sometime, even we change later to correct version of scala, our cache still might have the older one. In that case we can delete ~/.ivy2 folder.