I am trying to build my spark using build/sbt package, after changing the scala versions to 2.11 in pom.xml because my applications jar files use scala 2.11. But building the spark code gives an error in sql saying "A method with a varargs annotation produces a forwarder method with the same signature (exprs: Array[org.apache.spark.sql.Column])org.apache.spark.sql.Column as an existing method." in UserDefinedFunction.scala. I even tried building with using Dscala parameter to change the version of scala but it gives the same error. How do I change the spark and scala version and build the spark source code correctly? Any help is appreciated.
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