i met with the same question when update to spark 0.9.1 (svn checkout https://github.com/apache/spark/)
Exception in thread "main" java.lang.NoSuchMethodError: org.apache.spark.SparkContext$.jarOfClass(Ljava/lang/Class;)Lscala/collection/Seq; at org.apache.spark.examples.GroupByTest$.main(GroupByTest.scala:38) at org.apache.spark.examples.GroupByTest.main(GroupByTest.scala) sbt.buid: name := "GroupByTest" version := "1.0" scalaVersion := "2.10.4" libraryDependencies += "org.apache.spark" %% "spark-core" % "0.9.1" resolvers += "Akka Repository" at "http://repo.akka.io/releases/" is there something need to modify? -- View this message in context: http://apache-spark-user-list.1001560.n3.nabble.com/NoSuchMethodError-from-Spark-Java-tp4937p5076.html Sent from the Apache Spark User List mailing list archive at Nabble.com.