Created
November 27, 2020 07:49
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pyspark streaming using netcat as HTTP requests
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| hduser@thanoojubuntu-Inspiron-3521:~$ nc -lk 9999 | |
| helllo word hello python hello spark hello pyspark hellow streaming pyspark |
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| /usr/bin/python3.7 /home/hduser/PycharmProjects/pythonProjectOne/com/PySparkStreamingOne.py | |
| 20/11/27 13:12:31 WARN util.Utils: Your hostname, thanoojubuntu-Inspiron-3521 resolves to a loopback address: 127.0.1.1; using 192.168.225.20 instead (on interface wlp8s0) | |
| 20/11/27 13:12:31 WARN util.Utils: Set SPARK_LOCAL_IP if you need to bind to another address | |
| Setting default log level to "WARN". | |
| To adjust logging level use sc.setLogLevel(newLevel). For SparkR, use setLogLevel(newLevel). | |
| <pyspark.streaming.context.StreamingContext object at 0x7f9c81fb5490> | |
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| Time: 2020-11-27 13:12:50 | |
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| Time: 2020-11-27 13:13:00 | |
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| Time: 2020-11-27 13:13:40 | |
| ------------------------------------------- | |
| ('helllo', 1) | |
| ('python', 1) | |
| ('streaming', 1) | |
| ('word', 1) | |
| ('hello', 3) | |
| ('spark', 1) | |
| ('pyspark', 2) | |
| ('hellow', 1) | |
| ------------------------------------------- | |
| Time: 2020-11-27 13:13:50 | |
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| from pyspark.sql import SparkSession | |
| from pyspark.streaming import StreamingContext | |
| def getspark(): | |
| sparkcontextobj: SparkSession = SparkSession.builder \ | |
| .master("spark://thanoojubuntu-Inspiron-3521:7077") \ | |
| .getOrCreate().sparkContext | |
| return StreamingContext(sparkcontextobj, 10) | |
| if __name__ == '__main__': | |
| ssc = getspark() | |
| print(ssc) | |
| lines = ssc.socketTextStream("localhost", 9999) | |
| words = lines.flatMap(lambda line: line.split(" ")) | |
| pairs = words.map(lambda word: (word, 1)) | |
| wordCounts = pairs.reduceByKey(lambda x, y: x + y) | |
| wordCounts.pprint() | |
| ssc.start() | |
| ssc.awaitTermination() |
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