bl双性强迫侵犯h_国产在线观看人成激情视频_蜜芽188_被诱拐的少孩全彩啪啪漫画

好程序員大數(shù)據(jù)分享Spark任務(wù)和集群啟動流程

好程序員大數(shù)據(jù)分享Spark任務(wù)和集群啟動流程，Spark集群啟動流程

從網(wǎng)站建設(shè)到定制行業(yè)解決方案，為提供成都網(wǎng)站設(shè)計(jì)、網(wǎng)站制作服務(wù)體系，各種行業(yè)企業(yè)客戶提供網(wǎng)站建設(shè)解決方案，助力業(yè)務(wù)快速發(fā)展。創(chuàng)新互聯(lián)建站將不斷加快創(chuàng)新步伐，提供優(yōu)質(zhì)的建站服務(wù)。

1.調(diào)用start-all.sh腳本,開始啟動Master

2.Master啟動以后,preStart方法調(diào)用了一個定時器,定時檢查超時的Worker后刪除

3.啟動腳本會解析slaves配置文件,找到啟動Worker的相應(yīng)節(jié)點(diǎn).開始啟動Worker

4.Worker服務(wù)啟動后開始調(diào)用preStart方法開始向所有的Master進(jìn)行注冊

5.Master接收到Worker發(fā)送過來的注冊信息,Master開始保存注冊信息并把自己的URL響應(yīng)給Worker

6.Worker接收到Master的URL后并更新,開始調(diào)用一個定時器,定時的向Master發(fā)送心跳信息

?

任務(wù)提交流程

1.Driver端會通過spark-submit腳本啟動SaparkSubmit進(jìn)程,此時創(chuàng)建了一個非常重要的對象(SparkContext),開始向Master發(fā)送消息

2.Master接收到發(fā)送過來的信息后開始生成任務(wù)信息,并把任務(wù)信息放到一個對列里

3.Master把所有有效的Worker過濾出來,按照空閑的資源進(jìn)行排序

4.Master開始向有效的Worker通知拿取任務(wù)信息并啟動相應(yīng)的Executor

5.Worker啟動Executor并向Driver反向注冊

6.Driver開始把生成的task發(fā)送給相應(yīng)的Executor,Executor開始執(zhí)行任務(wù)

?

集群啟動流程

1.首先創(chuàng)建Master類

import akka.actor.{Actor, ActorSystem, Props}

import com.typesafe.config.{Config, ConfigFactory}

?

import scala.collection.mutable

import scala.concurrent.duration._

?

class Master(val masterHost: String, val masterPort: Int) extends Actor{

?

??// 用來存儲Worker的注冊信息

??val idToWorker = new mutable.HashMap[String, WorkerInfo]()

?

??// 用來存儲Worker的信息

??val workers = new mutable.HashSet[WorkerInfo]()

?

??// Worker的超時時間間隔

??val checkInterval: Long = 15000

?

?

??// 生命周期方法，在構(gòu)造器之后，receive方法之前只調(diào)用一次

??override def preStart(): Unit = {

????// 啟動一個定時器，用來定時檢查超時的Worker

????import context.dispatcher

????context.system.scheduler.schedule(0 millis, checkInterval millis, self, CheckTimeOutWorker)

??}

?

??// 在preStart方法之后，不斷的重復(fù)調(diào)用

??override def receive: Receive = {

????// Worker -> Master

????case RegisterWorker(id, host, port, memory, cores) => {

??????if (!idToWorker.contains(id)){

????????val workerInfo = new WorkerInfo(id, host, port, memory, cores)

????????idToWorker += (id -> workerInfo)

????????workers += workerInfo

?

????????println("a worker registered")

?

????????sender ! RegisteredWorker(s"akka.tcp://${Master.MASTER_SYSTEM}" +

??????????s"@${masterHost}:${masterPort}/user/${Master.MASTER_ACTOR}")

??????}

????}

????case HeartBeat(workerId) => {

??????// 通過傳過來的workerId獲取對應(yīng)的WorkerInfo

??????val workerInfo: WorkerInfo = idToWorker(workerId)

??????// 獲取當(dāng)前時間

??????val currentTime = System.currentTimeMillis()

??????// 更新最后一次心跳時間

??????workerInfo.lastHeartbeatTime = currentTime

????}

????case CheckTimeOutWorker => {

??????val currentTime = System.currentTimeMillis()

??????val toRemove: mutable.HashSet[WorkerInfo] =

????????workers.filter(w => currentTime - w.lastHeartbeatTime > checkInterval)

?

??????// 將超時的Worker從idToWorker和workers中移除

??????toRemove.foreach(deadWorker => {

????????idToWorker -= deadWorker.id

????????workers -= deadWorker

??????})

?

??????println(s"num of workers: ${workers.size}")

????}

??}

}

object Master{

??val MASTER_SYSTEM = "MasterSystem"

??val MASTER_ACTOR = "Master"

?

??def main(args: Array[String]): Unit = {

????val host = args(0)

????val port = args(1).toInt

?

????val configStr =

??????s"""

?????????|akka.actor.provider = "akka.remote.RemoteActorRefProvider"

?????????|akka.remote.netty.tcp.hostname = "$host"

?????????|akka.remote.netty.tcp.port = "$port"

??????""".stripMargin

?

????// 配置創(chuàng)建Actor需要的配置信息

????val config: Config = ConfigFactory.parseString(configStr)

?

????// 創(chuàng)建ActorSystem

????val actorSystem: ActorSystem = ActorSystem(MASTER_SYSTEM, config)

?

????// 用actorSystem實(shí)例創(chuàng)建Actor

????actorSystem.actorOf(Props(new Master(host, port)), MASTER_ACTOR)

?

????actorSystem.awaitTermination()

?

??}

}

2.創(chuàng)建RemoteMsg特質(zhì)

trait RemoteMsg extends Serializable{

?

}

?

// Master -> self(Master)

case object CheckTimeOutWorker

?

// Worker -> Master

case class RegisterWorker(id: String, host: String,

??????????????????????????port: Int, memory: Int, cores: Int) extends RemoteMsg

?

// Master -> Worker

case class RegisteredWorker(masterUrl: String) extends RemoteMsg

?

// Worker -> self

case object SendHeartBeat

?

// Worker -> Master(HeartBeat)

case class HeartBeat(workerId: String) extends RemoteMsg

3.創(chuàng)建Worker類

import java.util.UUID

?

import akka.actor.{Actor, ActorRef, ActorSelection, ActorSystem, Props}

import com.typesafe.config.{Config, ConfigFactory}

?

import scala.concurrent.duration._

?

class Worker(val host: String, val port: Int, val masterHost: String,

?????????????val masterPort: Int, val memory: Int, val cores: Int) extends Actor{

?

??// 生成一個Worker ID

??val workerId = UUID.randomUUID().toString

?

??// 用來存儲MasterURL

??var masterUrl: String = _

?

??// 心跳時間間隔

??val heartBeat_interval: Long = 10000

?

??// master的Actor

??var master: ActorSelection = _

?

??override def preStart(){

????// 獲取Master的Actor

????master = context.actorSelection(s"akka.tcp://${Master.MASTER_SYSTEM}" +

??????s"@${masterHost}:${masterPort}/user/${Master.MASTER_ACTOR}")

?

????master ! RegisterWorker(workerId, host, port, memory, cores)

??}

?

??override def receive: Receive = {

????// Worker接收到Master發(fā)送過來的注冊成功的信息（masterUrl）

????case RegisteredWorker(masterUrl) => {

??????this.masterUrl = masterUrl

??????// 啟動一個定時器，定時給Master發(fā)送心跳

??????import context.dispatcher

??????context.system.scheduler.schedule(0 millis, heartBeat_interval millis, self, SendHeartBeat)

????}

????case SendHeartBeat => {

??????// 向Master發(fā)送心跳

??????master ! HeartBeat(workerId)

????}

?

??}

?

}

object Worker{

??val WORKER_SYSTEM = "WorkerSystem"

??val WORKER_ACTOR = "Worker"

?

??def main(args: Array[String]): Unit = {

????val host = args(0)

????val port = args(1).toInt

????val masterHost = args(2)

????val masterPort = args(3).toInt

????val memory = args(4).toInt

????val cores = args(5).toInt

?

????val configStr =

??????s"""

?????????|akka.actor.provider = "akka.remote.RemoteActorRefProvider"

?????????|akka.remote.netty.tcp.hostname = "$host"

?????????|akka.remote.netty.tcp.port = "$port"

??????""".stripMargin

?

????// 配置創(chuàng)建Actor需要的配置信息

????val config: Config = ConfigFactory.parseString(configStr)

?

????// 創(chuàng)建ActorSystem

????val actorSystem: ActorSystem = ActorSystem(WORKER_SYSTEM, config)

?

????// 用actorSystem實(shí)例創(chuàng)建Actor

????val worker: ActorRef = actorSystem.actorOf(

??????Props(new Worker(host, port, masterHost, masterPort, memory, cores)), WORKER_ACTOR)

?

????actorSystem.awaitTermination()

?

??}

}

4.創(chuàng)建初始化類

class WorkerInfo(val id: String, val host: String, val port: Int,

?????????????????val memory: Int, val cores: Int) {

?

??// 初始化最后一次心跳的時間

??var lastHeartbeatTime: Long = _

?

}

5.本地測試需要傳入?yún)?shù):

好程序員大數(shù)據(jù)分享Spark任務(wù)和集群啟動流程

網(wǎng)站題目：好程序員大數(shù)據(jù)分享Spark任務(wù)和集群啟動流程
當(dāng)前地址：http://vcdvsql.cn/article26/gjcecg.html

成都網(wǎng)站建設(shè)公司_創(chuàng)新互聯(lián)，為您提供移動網(wǎng)站建設(shè)、建站公司、網(wǎng)站制作、網(wǎng)站營銷、網(wǎng)站改版、微信小程序

廣告

聲明：本網(wǎng)站發(fā)布的內(nèi)容（圖片、視頻和文字）以用戶投稿、用戶轉(zhuǎn)載內(nèi)容為主，如果涉及侵權(quán)請盡快告知，我們將會在第一時間刪除。文章觀點(diǎn)不代表本網(wǎng)站立場，如需處理請聯(lián)系客服。電話：028-86922220；郵箱：631063699@qq.com。內(nèi)容未經(jīng)允許不得轉(zhuǎn)載，或轉(zhuǎn)載時需注明來源： 創(chuàng)新互聯(lián)

微信小程序開發(fā)