spark streaming kafka consumer scala example

:" + events.length)var i = 1 for(Event events) {val Sensorinfo=NewString (Event.event.getBody.array ())//single-Line Records//single-line record formattingVal arrayfileds = Sensorinfo.split (",") if(Arrayfileds.length = = 6) {val shopid= Arrayfileds (0)//in-store numberVal Floorid= shopid.substring (0, 5)//Floor NumberVal mac = arrayfileds (1) Val ts= Arrayfileds (2). Tolong//time StampVal time = Sdf.format (TS * 1000) var hour= Sdfhour.format (TS * 1000) var minute= Sdfminute.format (TS

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calculated value, and to get the latest heat value.Call the Updatestatebykey primitive and pass in the anonymous function defined above to update the Web page heat value.Finally, after the latest results, you need to sort the results, and finally print the maximum heat value of the 10 pages.The source code is as follows.Webpagepopularityvaluecalculator Type Source code Import org.apache.spark.SparkConf Import org.apache.spark.streaming.Seconds Import Org.apache.spark.streaming.StreamingContext

There have also been recent studies using spark streaming for streaming. This article is a simple example of how to do spark streaming programming with the flow-based count of word counts.1. Dependent jar PackagesRefer to the arti

Spark Streaming Application Simple example Package Com.orc.stream Import org.apache.spark.{ sparkconf, Sparkcontext} import org.apache.spark.streaming.{ Seconds, StreamingContext} /** * Created by Dengni on 2016/9/15. Today also are mid-Autumn Festival * Scala 2.10.4 ; 2.11.X not Works * Use method:

crossvalidator is very high, however, compared with heuristic manual validation, cross-validation is still a very useful parameter selection method in existence. Scala: Import org.apache.spark.ml.Pipeline Import org.apache.spark.ml.classification.LogisticRegression Import Org.apache.spark.ml.evaluation.BinaryClassificationEvaluator import org.apache.spark.ml.feature. {HASHINGTF, tokenizer} import org.apache.spark.ml.linalg.Vector import org.apache.s

processing data is time4 and Time5;invreducefunc processing data is time1 and time2. Special special handling is needed here, window at time 5 to understand the last moment of time 5, if the time here is a second, then time 5 is actually the 5th second last moment, that is, the first 6 seconds. This will be explained in detail later in the blog post.The key point is almost explained, Reducefunc's function is good to understand, the function of the first parameter reduced can be understood as ti