又粗又大的机巴好爽欧美,91麻豆国产级在线,www.四虎影院.con

本地jvm執(zhí)行flink帶web ui

使用

				?

									StreamExecutionEnvironment executionEnvironment = StreamExecutionEnvironment.getExecutionEnvironment();

可以獲取flink執(zhí)行環(huán)境。但是本地jvm執(zhí)行的時候是不帶web ui的。有時候出于監(jiān)控的考慮，需要帶著監(jiān)控頁面查看。任務(wù)運行狀況，可以使用下面方式獲取flink本地執(zhí)行環(huán)境，并帶有web ui。

				?

									Configuration config = new Configuration();

									config.setInteger(RestOptions.PORT,9998);

									StreamExecutionEnvironment env = StreamExecutionEnvironment.createLocalEnvironmentWithWebUI(config);

Flink 本地執(zhí)行入門

一、maven依賴

				?

									<properties>

									    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

									    <flink.version>1.6.3</flink.version>

									    <java.version>1.8</java.version>

									    <scala.version>2.11.8</scala.version>

									    <hbase.version>1.2.4</hbase.version>

									    <scala.binary.version>2.11</scala.binary.version>

									    <maven.compiler.source>${java.version}</maven.compiler.source>

									    <maven.compiler.target>${java.version}</maven.compiler.target>

									</properties>

									<dependency>

									    <groupId>org.apache.flink</groupId>

									    <artifactId>flink-clients_${scala.binary.version}</artifactId>

									    <version>${flink.version}</version>

									</dependency>

二、本地執(zhí)行

				?

									import org.apache.flink.api.common.functions.FilterFunction;

									import org.apache.flink.api.java.DataSet;

									import org.apache.flink.api.common.JobExecutionResult;

									import org.apache.flink.api.java.ExecutionEnvironment;

									public class FlinkReadTextFile {

									    public static void main(String[] args) throws Exception {

									        ExecutionEnvironment env = ExecutionEnvironment.createLocalEnvironment();

									        DataSet<String> data = env.readTextFile("file:///Users/***/Documents/test.txt");

									        data.filter(new FilterFunction<String>() {

									            @Override

									            public boolean filter(String value) throws Exception {

									                return value.startsWith("五芳齋美");

									            }

									        })

									                .writeAsText("file:///Users/***/Documents/test01.txt");

									        JobExecutionResult res = env.execute();

									    }

									}

三、實例

				?

									import org.apache.flink.streaming.api.windowing.time.Time

									import org.apache.flink.streaming.api.scala._

									object SocketWindowWordCount {

									  /** Main program method */

									  def main(args: Array[String]): Unit ={ // the port to connect to

									//  val port: Int = try {

									//    ParameterTool.fromArgs(args).getInt("port")

									//  } catch {

									//    case e: Exception => {

									//      System.err.println("No port specified. Please run 'SocketWindowWordCount --port <port>'")

									//      return

									//    }

									//  }

									  // get the execution environment

									  val env: StreamExecutionEnvironment = StreamExecutionEnvironment.getExecutionEnvironment

									  // get input data by connecting to the socket

									  val text = env.socketTextStream("localhost", 9000, '\n')

									  // parse the data, group it, window it, and aggregate the counts

									  val windowCounts = text

									    .flatMap { w => w.split("\\s") }

									    .map { w => WordWithCount(w, 1) }

									    .keyBy("word")

									    .timeWindow(Time.seconds(5), Time.seconds(1))

									    .sum("count")

									  // print the results with a single thread, rather than in parallel

									  windowCounts.print().setParallelism(1)

									  env.execute("Socket Window WordCount")

									}

									// Data type for words with count

									case class WordWithCount(word: String, count: Long)

									}