Page Comparison

scala> wordsRdd.map(word => wrapSingleWord(word)).take(10)
16/05/20 00:18:46 INFO DAGScheduler: Job 7 finished: take at <console>:34, took 0.151721 s
res9: Array[String] = Array(>>I<<, >>am<<, >>Daniel<<, >><<, >>I<<, >>am<<, >>Sam<<, >>Sam<<, >>I<<, >>am<<)

scala> wordsRdd.map(word => wrapSingleWord(word)).take(10)
16/05/20 00:18:52 INFO DAGScheduler: Job 8 finished: take at <console>:34, took 0.146428 s
res10: Array[String] = Array(>>I<<, >>am<<, >>Daniel<<, >><<, >>I<<, >>am<<, >>Sam<<, >>Sam<<, >>I<<, >>am<<)

scala> wordsRdd.map(word => wrapSingleWord(word)).take(10)
16/05/20 00:18:54 INFO DAGScheduler: Job 9 finished: take at <console>:34, took 0.153416 s
res11: Array[String] = Array(>>I<<, >>am<<, >>Daniel<<, >><<, >>I<<, >>am<<, >>Sam<<, >>Sam<<, >>I<<, >>am<<)

Remember, wordsRdd.map(wrapSingleWord) is could be used as shorthand for wordsRdd.map(word => wrapSingleWord(word)) since the function takes in the entire RDD element.