1.2.0-bin-hadoop2.4 and my Scala version is 2.11.7. I am getting an error so I can\'t use sbt.
~/sparksample$ sbt
As @Till Rohrmann suggested you there's no such thing as spark-core_2.11.7 and your build.sbt appears to reference that library.
I suggest you to edit the file /home/beyhan/sparksample/build.sbt and remove the references to that library.
The correct reference is:
libraryDependencies += "org.apache.spark" % "spark-core_2.11" % "1.2.0"
Remember that not only spark-core does not have any version 2.11.7 but also other spark libraries that you might be using.