我无法打开github链接https://github.com/apache/incubator-spark/tree/master/examples/src/main/scala/org/apache/spark/streaming/examples。
但是,您可以使用下面的代码为我工作。
import org.apache.spark.streaming.{ Seconds, StreamingContext }
import org.apache.spark.SparkContext._
import org.apache.spark.streaming.twitter._
import org.apache.spark.SparkConf
import org.apache.spark.streaming._
import org.apache.spark.{ SparkContext, SparkConf }
import org.apache.spark.storage.StorageLevel
import org.apache.spark.streaming.flume._
/**
* A Spark Streaming application that receives tweets on certain
* keywords from twitter datasource and find the popular hashtags
*
* Arguments: <comsumerKey> <consumerSecret> <accessToken> <accessTokenSecret> <keyword_1> ... <keyword_n>
* <comsumerKey> - Twitter consumer key
* <consumerSecret> - Twitter consumer secret
* <accessToken> - Twitter access token
* <accessTokenSecret> - Twitter access token secret
* <keyword_1> - The keyword to filter tweets
* <keyword_n> - Any number of keywords to filter tweets
*
* More discussion at stdatalabs.blogspot.com
*
* @author Sachin Thirumala
*/
object SparkPopularHashTags {
val conf = new SparkConf().setMaster("local[4]").setAppName("Spark Streaming - PopularHashTags")
val sc = new SparkContext(conf)
def main(args: Array[String]) {
sc.setLogLevel("WARN")
val Array(consumerKey, consumerSecret, accessToken, accessTokenSecret) = args.take(4)
val filters = args.takeRight(args.length - 4)
// Set the system properties so that Twitter4j library used by twitter stream
// can use them to generat OAuth credentials
System.setProperty("twitter4j.oauth.consumerKey", consumerKey)
System.setProperty("twitter4j.oauth.consumerSecret", consumerSecret)
System.setProperty("twitter4j.oauth.accessToken", accessToken)
System.setProperty("twitter4j.oauth.accessTokenSecret", accessTokenSecret)
// Set the Spark StreamingContext to create a DStream for every 5 seconds
val ssc = new StreamingContext(sc, Seconds(5))
// Pass the filter keywords as arguements
// val stream = FlumeUtils.createStream(ssc, args(0), args(1).toInt)
val stream = TwitterUtils.createStream(ssc, None, filters)
// Split the stream on space and extract hashtags
val hashTags = stream.flatMap(status => status.getText.split(" ").filter(_.startsWith("#")))
// Get the top hashtags over the previous 60 sec window
val topCounts60 = hashTags.map((_, 1)).reduceByKeyAndWindow(_ + _, Seconds(60))
.map { case (topic, count) => (count, topic) }
.transform(_.sortByKey(false))
// Get the top hashtags over the previous 10 sec window
val topCounts10 = hashTags.map((_, 1)).reduceByKeyAndWindow(_ + _, Seconds(10))
.map { case (topic, count) => (count, topic) }
.transform(_.sortByKey(false))
// print tweets in the currect DStream
stream.print()
// Print popular hashtags
topCounts60.foreachRDD(rdd => {
val topList = rdd.take(10)
println("\nPopular topics in last 60 seconds (%s total):".format(rdd.count()))
topList.foreach { case (count, tag) => println("%s (%s tweets)".format(tag, count)) }
})
topCounts10.foreachRDD(rdd => {
val topList = rdd.take(10)
println("\nPopular topics in last 10 seconds (%s total):".format(rdd.count()))
topList.foreach { case (count, tag) => println("%s (%s tweets)".format(tag, count)) }
})
ssc.start()
ssc.awaitTermination()
}
}
说明:
setMaster("local[4]")
- 确保为1个线程用于收集流入流束和另一个线程用于处理它掌握与至少2个线程设置为本地模式。
我们指望的流行主题标签与下面的代码:
val topCounts60 = hashTags.map((_, 1)).reduceByKeyAndWindow(_ + _, Seconds(60))
.map { case (topic, count) => (count, topic) }
.transform(_.sortByKey(false))
上面的代码做了主题标签的字数超过作为reduceByKeyAndWindow
指定的上一个60/10秒,并以降序排序。
reduceByKeyAndWindow
用于我们必须对先前流间隔中累积的数据应用转换的情况。
通过将四个叽叽喳喳OAuth凭证作为参数执行代码:
您应该看到在每一个10/60秒间隔的流行主题标签。
您可以通过集成的火花流和风暴在以下链接水槽和卡夫卡检查类似的项目:
星火流:
星火的流部分1:实时的Twitter情感分析 http://stdatalabs.blogspot.in/2016/09/spark-streaming-part-1-real-time.html
Spark流媒体第2部分:使用Flume实时分析twitter情绪 http://stdatalabs.blogspot.in/2016/09/spark-streaming-part-2-real-time_10.html
星火的流部分3:使用卡夫卡 http://stdatalabs.blogspot.in/2016/09/spark-streaming-part-3-real-time.html
数据保证在星火卡夫卡集成流媒体实时的Twitter情感分析 http://stdatalabs.blogspot.in/2016/10/data-guarantees-in-spark-streaming-with.html
风暴:
实时流处理使用Apache风暴 - 第1部分 http://stdatalabs.blogspot.in/2016/09/realtime-stream-processing-using-apache.html
使用Apache Storm和Kafka实时流处理 - 第2部分 http://stdatalabs.blogspot.in/2016/10/real-time-stream-processing-using.html
http://spark.incubator.apache.org/docs/latest/streaming-programming-guide.html#linking-with-spark-streaming 我成功运行网络计数示例。 但是,当我执行./run-example org.apache.spark.streaming.examples.TwitterPopularTags本地[2]然后它会显示我身份验证失败问题... 我设置了t –
您可以请编辑您的问题,包括您收到的特定错误消息或异常?另外,AMP Camp 3大数据迷你课程有一个流式Twitter示例,可能会有所帮助(并且包含有关生成相应API令牌的说明):http://ampcamp.berkeley.edu/big-data-mini-course/realtime - 处理与 - 火花streaming.html –