Storm编程入门API系列之Storm的Topology默认Workers、默认executors和默认tasks数目

时间：2023-03-09 07:07:05
Storm编程入门API系列之Storm的Topology默认Workers、默认executors和默认tasks数目

　　关于，storm的启动我这里不多说了。

　见博客

storm的3节点集群详细启动步骤（非HA和HA）（图文详解）

Storm编程入门API系列之Storm的Topology默认Workers、默认executors和默认tasks数目

　　

　　建立stormDemo项目

Group Id ：  zhouls.bigdata

Artifact Id ： stormDemo

Package : stormDemo

Storm编程入门API系列之Storm的Topology默认Workers、默认executors和默认tasks数目

Storm编程入门API系列之Storm的Topology默认Workers、默认executors和默认tasks数目

Storm编程入门API系列之Storm的Topology默认Workers、默认executors和默认tasks数目

Storm编程入门API系列之Storm的Topology默认Workers、默认executors和默认tasks数目

Storm编程入门API系列之Storm的Topology默认Workers、默认executors和默认tasks数目

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

  <modelVersion>4.0.</modelVersion>

  <groupId>zhouls.bigdata</groupId>

  <artifactId>stormDemo</artifactId>

  <version>0.0.-SNAPSHOT</version>

  <packaging>jar</packaging>

  <name>stormDemo</name>

  <url>http://maven.apache.org</url>

  <properties>

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

  </properties>

  <dependencies>

        <dependency>

            <groupId>junit</groupId>

            <artifactId>junit</artifactId>

            <version>4.12</version>

            <scope>test</scope>

        </dependency>

    <dependency>

            <groupId>org.apache.storm</groupId>

            <artifactId>storm-core</artifactId>

            <version>1.0.</version>

    </dependency>

  </dependencies>

</project>

　　编写代码StormTopology.java

　以下是数字累加求和的例子

　　spout一直产生从1开始的递增数字

　　bolt进行汇总打印

package zhouls.bigdata.stormDemo;

import java.util.Map;

import org.apache.storm.Config;

import org.apache.storm.LocalCluster;

import org.apache.storm.StormSubmitter;

import org.apache.storm.generated.AlreadyAliveException;

import org.apache.storm.generated.AuthorizationException;

import org.apache.storm.generated.InvalidTopologyException;

import org.apache.storm.spout.SpoutOutputCollector;

import org.apache.storm.task.OutputCollector;

import org.apache.storm.task.TopologyContext;

import org.apache.storm.topology.OutputFieldsDeclarer;

import org.apache.storm.topology.TopologyBuilder;

import org.apache.storm.topology.base.BaseRichBolt;

import org.apache.storm.topology.base.BaseRichSpout;

import org.apache.storm.tuple.Fields;

import org.apache.storm.tuple.Tuple;

import org.apache.storm.tuple.Values;

import org.apache.storm.utils.Utils;

public class StormTopology {

    public static class MySpout extends BaseRichSpout{

        private Map conf;

        private TopologyContext context;

        private SpoutOutputCollector collector;

        public void open(Map conf, TopologyContext context,

                SpoutOutputCollector collector) {

            this.conf = conf;

            this.collector = collector;

            this.context = context;

        }

        int num = ;

        public void nextTuple() {

            num++;

            System.out.println("spout:"+num);

            this.collector.emit(new Values(num));

            Utils.sleep();

        }

        public void declareOutputFields(OutputFieldsDeclarer declarer) {

            declarer.declare(new Fields("num"));

        }

    }

    public static class MyBolt extends BaseRichBolt{

        private Map stormConf;

        private TopologyContext context;

        private OutputCollector collector;

        public void prepare(Map stormConf, TopologyContext context,

                OutputCollector collector) {

            this.stormConf = stormConf;

            this.context = context;

            this.collector = collector;

        }

        int sum = ;

        public void execute(Tuple input) {

            Integer num = input.getIntegerByField("num");

            sum += num;

            System.out.println("sum="+sum);

        }

        public void declareOutputFields(OutputFieldsDeclarer declarer) {

        }

    }

    public static void main(String[] args) {

        TopologyBuilder topologyBuilder = new TopologyBuilder();

        String spout_id = MySpout.class.getSimpleName();

        String bolt_id = MyBolt.class.getSimpleName();

        topologyBuilder.setSpout(spout_id, new MySpout());

        topologyBuilder.setBolt(bolt_id, new MyBolt()).shuffleGrouping(spout_id);

        Config config = new Config();

        String topology_name = StormTopology.class.getSimpleName();

        if(args.length==){

            //在本地运行

            LocalCluster localCluster = new LocalCluster();

            localCluster.submitTopology(topology_name, config, topologyBuilder.createTopology());

        }else{

            //在集群运行

            try {

                StormSubmitter.submitTopology(topology_name, config, topologyBuilder.createTopology());

            } catch (AlreadyAliveException e) {

                e.printStackTrace();

            } catch (InvalidTopologyException e) {

                e.printStackTrace();

            } catch (AuthorizationException e) {

                e.printStackTrace();

            }

        }

    }

}

Storm编程入门API系列之Storm的Topology默认Workers、默认executors和默认tasks数目

Storm编程入门API系列之Storm的Topology默认Workers、默认executors和默认tasks数目

Storm编程入门API系列之Storm的Topology默认Workers、默认executors和默认tasks数目

[hadoop@master apache-storm-1.0.]$ pwd

/home/hadoop/app/apache-storm-1.0.

[hadoop@master apache-storm-1.0.]$ ll

total

drwxrwxr-x   hadoop hadoop   May  : bin

-rw-r--r--   hadoop hadoop  Jul    CHANGELOG.md

drwxrwxr-x   hadoop hadoop   Jul  : conf

drwxrwxr-x   hadoop hadoop   Jul    examples

drwxrwxr-x  hadoop hadoop   May  : external

drwxrwxr-x   hadoop hadoop   Jul    extlib

drwxrwxr-x   hadoop hadoop   Jul    extlib-daemon

drwxrwxr-x   hadoop hadoop   May  : lib

-rw-r--r--   hadoop hadoop  Jul    LICENSE

drwxrwxr-x   hadoop hadoop   May  : log4j2

drwxrwxr-x   hadoop hadoop   May  : logs

-rw-r--r--   hadoop hadoop    Jul    NOTICE

drwxrwxr-x   hadoop hadoop   May  : public

-rw-r--r--   hadoop hadoop  Jul    README.markdown

-rw-r--r--   hadoop hadoop      Jul    RELEASE

-rw-r--r--   hadoop hadoop  Jul    SECURITY.md

[hadoop@master apache-storm-1.0.]$ mkdir jar

[hadoop@master apache-storm-1.0.]$ cd jar/

[hadoop@master jar]$ pwd

/home/hadoop/app/apache-storm-1.0./jar

[hadoop@master jar]$ ll

total

[hadoop@master jar]$ rz

[hadoop@master jar]$ ll

total

-rw-r--r--  hadoop hadoop  Jul  : StormTopology.jar

[hadoop@master jar]$

　　提交作业之前

Storm编程入门API系列之Storm的Topology默认Workers、默认executors和默认tasks数目

Storm编程入门API系列之Storm的Topology默认Workers、默认executors和默认tasks数目

Storm编程入门API系列之Storm的Topology默认Workers、默认executors和默认tasks数目

Storm编程入门API系列之Storm的Topology默认Workers、默认executors和默认tasks数目

[hadoop@master apache-storm-1.0.]$ pwd

/home/hadoop/app/apache-storm-1.0.

[hadoop@master apache-storm-1.0.]$ ll

total

drwxrwxr-x   hadoop hadoop   May  : bin

-rw-r--r--   hadoop hadoop  Jul    CHANGELOG.md

drwxrwxr-x   hadoop hadoop   Jul  : conf

drwxrwxr-x   hadoop hadoop   Jul    examples

drwxrwxr-x  hadoop hadoop   May  : external

drwxrwxr-x   hadoop hadoop   Jul    extlib

drwxrwxr-x   hadoop hadoop   Jul    extlib-daemon

drwxrwxr-x   hadoop hadoop   Jul  : jar

drwxrwxr-x   hadoop hadoop   May  : lib

-rw-r--r--   hadoop hadoop  Jul    LICENSE

drwxrwxr-x   hadoop hadoop   May  : log4j2

drwxrwxr-x   hadoop hadoop   May  : logs

-rw-r--r--   hadoop hadoop    Jul    NOTICE

drwxrwxr-x   hadoop hadoop   May  : public

-rw-r--r--   hadoop hadoop  Jul    README.markdown

-rw-r--r--   hadoop hadoop      Jul    RELEASE

-rw-r--r--   hadoop hadoop  Jul    SECURITY.md

[hadoop@master apache-storm-1.0.]$ bin/storm jar jar/StormTopology.jar zhouls.bigdata.stormDemo.StormTopology aaa

Running: /home/hadoop/app/jdk/bin/java -client -Ddaemon.name= -Dstorm.options= -Dstorm.home=/home/hadoop/app/apache-storm-1.0. -Dstorm.log.dir=/home/hadoop/app/apache-storm-1.0./logs -Djava.library.path=/usr/local/lib:/opt/local/lib:/usr/lib -Dstorm.conf.file= -cp /home/hadoop/app/apache-storm-1.0./lib/log4j-api-2.1.jar:/home/hadoop/app/apache-storm-1.0./lib/kryo-3.0..jar:/home/hadoop/app/apache-storm-1.0./lib/storm-rename-hack-1.0..jar:/home/hadoop/app/apache-storm-1.0./lib/log4j-core-2.1.jar:/home/hadoop/app/apache-storm-1.0./lib/slf4j-api-1.7..jar:/home/hadoop/app/apache-storm-1.0./lib/minlog-1.3..jar:/home/hadoop/app/apache-storm-1.0./lib/objenesis-2.1.jar:/home/hadoop/app/apache-storm-1.0./lib/clojure-1.7..jar:/home/hadoop/app/apache-storm-1.0./lib/servlet-api-2.5.jar:/home/hadoop/app/apache-storm-1.0./lib/log4j-slf4j-impl-2.1.jar:/home/hadoop/app/apache-storm-1.0./lib/log4j-over-slf4j-1.6..jar:/home/hadoop/app/apache-storm-1.0./lib/storm-core-1.0..jar:/home/hadoop/app/apache-storm-1.0./lib/disruptor-3.3..jar:/home/hadoop/app/apache-storm-1.0./lib/asm-5.0..jar:/home/hadoop/app/apache-storm-1.0./lib/reflectasm-1.10..jar:jar/StormTopology.jar:/home/hadoop/app/apache-storm-1.0./conf:/home/hadoop/app/apache-storm-1.0./bin -Dstorm.jar=jar/StormTopology.jar zhouls.bigdata.stormDemo.StormTopology aaa

 [main] INFO  o.a.s.StormSubmitter - Generated ZooKeeper secret payload for MD5-digest: -:-

 [main] INFO  o.a.s.s.a.AuthUtils - Got AutoCreds []

 [main] INFO  o.a.s.StormSubmitter - Uploading topology jar jar/StormTopology.jar to assigned location: /home/hadoop/data/storm/nimbus/inbox/stormjar-cf402e8a-abf7-46bc-a452-14b53aa6b25e.jar

 [main] INFO  o.a.s.StormSubmitter - Successfully uploaded topology jar to assigned location: /home/hadoop/data/storm/nimbus/inbox/stormjar-cf402e8a-abf7-46bc-a452-14b53aa6b25e.jar

 [main] INFO  o.a.s.StormSubmitter - Submitting topology StormTopology in distributed mode with conf {"storm.zookeeper.topology.auth.scheme":"digest","storm.zookeeper.topology.auth.payload":"-5252258187769573644:-8540038416575654367"}

 [main] INFO  o.a.s.StormSubmitter - Finished submitting topology: StormTopology

[hadoop@master apache-storm-1.0.]$

　　然后，查看storm 的ui界面

Storm编程入门API系列之Storm的Topology默认Workers、默认executors和默认tasks数目

Storm编程入门API系列之Storm的Topology默认Workers、默认executors和默认tasks数目

Storm编程入门API系列之Storm的Topology默认Workers、默认executors和默认tasks数目

Storm编程入门API系列之Storm的Topology默认Workers、默认executors和默认tasks数目

Storm编程入门API系列之Storm的Topology默认Workers、默认executors和默认tasks数目

　　为什么，会是如上的数字呢？大家要学，就要深入去学和理解。

Storm编程入门API系列之Storm的Topology默认Workers、默认executors和默认tasks数目

　　因为，默认Workers是1。所以是如上如图所示。

　　　　点击进去

Storm编程入门API系列之Storm的Topology默认Workers、默认executors和默认tasks数目

Storm编程入门API系列之Storm的Topology默认Workers、默认executors和默认tasks数目

Storm编程入门API系列之Storm的Topology默认Workers、默认executors和默认tasks数目

Storm编程入门API系列之Storm的Topology默认Workers、默认executors和默认tasks数目

Storm编程入门API系列之Storm的Topology默认Workers、默认executors和默认tasks数目

　　由此可见，

　　StormTopology默认是只有1个Worker、3个executors、3个tasks。