kafka+pyspark
安装kafka
kafka 三部分 server producer consumer
pyspark 监控
一、环境部署
1.导入对应版本的spark-streaming-kafka-*-*.jar
2.相应jar追加到SPARK_DIST_CLASSPATH
二、kafka+spark测试
1.启动kafka的server和producer
2.代码
from pyspark.streaming.kafka import KafkaUtils
if __name__ == "__main__":
if len(sys.argv) != 3:
print("Usage: kafka_wordcount.py <zk> <topic>", file=sys.stderr)
exit(-1)
sc = SparkContext(appName="PythonStreamingKafkaWordCount")
ssc = StreamingContext(sc, 1)
zkQuorum, topic = sys.argv[1:]
kvs = KafkaUtils.createStream(ssc, zkQuorum, "spark-streaming-consumer", {topic: 1})
lines = kvs.map(lambda x: x[1])
counts = lines.flatMap(lambda line: line.split(" ")) \
.map(lambda word: (word, 1)) \
.reduceByKey(lambda a, b: a+b)
counts.pprint()
ssc.start()
ssc.awaitTermination()
3.启动 开始监控生产者 即时计算词频数
4.注意各个版本匹配问题
posted on 2019-09-29 17:49 nnnnnnnnnnnnnnnn 阅读(1030) 评论(0) 编辑 收藏 举报