Legacy data sources. People tend to have a mix of technologies. You can use spark sql to do this: https://spark.apache.org/docs/latest/sql-programming-guide.htm

Legacy data sources. People tend to have a mix of technologies. You can use spark sql to do this: https://spark.apache.org/docs/latest/sql-programming-guide.html https://spark.apache.org/docs/latest/sql-programming-guide.h... Spark can also access hdfs. You are typically mixing data sources as well.