Apache Spark Scala Interview Questions- Shyam Mallesh Official
”`scala val numbers = Array(1, 2, 3, 4, 5) val doubledNumbers = numbers.map(x => x * 2) // doubledNumbers: Array[Int] = Array(2, 4, 6, 8, 10)
\[ ext{Apache Spark} = ext{In-Memory Computation} + ext{Distributed Processing} \] Apache Spark Scala Interview Questions- Shyam Mallesh
The flatMap() function applies a transformation to each element in an RDD or DataFrame and returns a new RDD or DataFrame with a variable number of elements. ”`scala val numbers = Array(1, 2, 3, 4,
Here’s an example:
val words = Array(“hello”, “world”) val characters = words.flatMap(word => word.toCharArray) // characters: Array[Char] = Array(h, e, `scala val numbers = Array(1
Apache Spark Scala Interview Questions: A Comprehensive Guide by Shyam Mallesh**
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