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Python-for-Geeks/Chapter08/rdd/rddtranform1.py
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2021-08-13 11:44:51 +05:30

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Python

#rddtransform1.py: rdd tranformation function
#please ignore next 2 statements if running directly in PySpark shell
import time
from pyspark.sql import SparkSession
spark = SparkSession.builder.master("local[*]")\
.appName("RDD Test app")\
.getOrCreate()
rdd1 = spark.sparkContext.textFile('sample.txt')
#print(rdd1.getNumPartitions())
rdd2 = rdd1.map(lambda lines: lines.lower())
rdd3 = rdd1.map(lambda lines: lines.upper())
print(rdd2.collect())
print(rdd3.collect())
time.sleep(60)