Chapter folders renamed

Chapter08/rdd/rddcreate.py

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+#rddcreate.py: to create rdd from a collection and from a file
+
+#please ignore next 2 statements if running directly in PySpark shell
+from pyspark.sql import SparkSession
+spark = SparkSession.builder.master("local[*]")\
+    .appName("RDD Test app")\
+    .getOrCreate()
+
+data = [5, 4, 6, 3, 2, 8, 9, 2, 8, 7,
+        8, 4, 4, 8, 2, 7, 8, 9, 6, 9]
+rdd1 = spark.sparkContext.parallelize(data)
+print(rdd1.getNumPartitions())
+
+
+rdd2 = spark.sparkContext.textFile('sample.txt')
+print(rdd2.getNumPartitions())