ls -l /usr/share/aws/redshift/jdbc/

RedshiftJDBC41-1.2.7.1003.jar
RedshiftJDBC42-1.2.7.1003.jar

import org.apache.spark.sql._
val sqlContext = new SQLContext(sc)


val df : DataFrame = sqlContext.read
.option("url","jdbc:redshift://host:PORT/DB-name?user=user&password=password")
.option("dbtable","tablename")
.load()

org.apache.spark.sql.AnalysisException: Unable to infer schema for Parquet. It must be specified manually.;