1.描述
将计算结果写入到hbase数据库中。
hbase 高吞吐量
随机定位
实时读写。

2.创建hbase wordcount表,f1
$>hbase shell
$hbase shell>create 'ns1:wordcount' , 'f1'

3.引入依赖

<xml version="1.0" encoding="UTF-8">
<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">
    <parent>
        <artifactId>hdfsExample</artifactId>
        <groupId>com.mao</groupId>
        <version>1.0-SNAPSHOT</version>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.mao</groupId>
    <artifactId>stormDemo</artifactId>

    <dependencies>
        <dependency>
            <groupId>org.apache.storm</groupId>
            <artifactId>storm-core</artifactId>
            <version>1.0.6</version>
        </dependency>
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.17</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>log4j-over-slf4j</artifactId>
            <version>1.7.26</version>
        </dependency>
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>1.7.26</version>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.11</version>
        </dependency>
        <dependency>
            <groupId>org.apache.storm</groupId>
            <artifactId>storm-hbase</artifactId>
            <version>1.0.6</version>
        </dependency>
        <dependency>
            <groupId>org.apache.storm</groupId>
            <artifactId>storm-kafka</artifactId>
            <version>1.0.6</version>
        </dependency>
        <dependency>
            <groupId>org.apache.kafka</groupId>
            <artifactId>kafka_2.10</artifactId>
            <version>0.8.1.1</version>
            <exclusions>
                <exclusion>
                    <groupId>org.apache.zookeeper</groupId>
                    <artifactId>zookeeper</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>log4j</groupId>
                    <artifactId>log4j</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>

</project>

4.HbaseBolt

package com.mao.storm.Hbase;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.client.Connection;
import org.apache.hadoop.hbase.client.ConnectionFactory;
import org.apache.hadoop.hbase.client.Table;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.storm.task.OutputCollector;
import org.apache.storm.task.TopologyContext;
import org.apache.storm.topology.IRichBolt;
import org.apache.storm.topology.OutputFieldsDeclarer;
import org.apache.storm.tuple.Tuple;

import java.io.IOException;
import java.util.Map;

/**
 * HbaseBolt,写入数据到hbase库中。
 */
public class HbaseBolt implements IRichBolt {

    private Table t ;
    public void prepare(Map stormConf, TopologyContext context, OutputCollector collector) {
        try {
            Configuration conf = HBaseConfiguration.create();
            Connection conn = ConnectionFactory.createConnection(conf);
            TableName tname = TableName.valueOf("ns1:wordcount");
            t = conn.getTable(tname);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    public void execute(Tuple tuple) {
        String word = tuple.getString(0);
        Integer count = tuple.getInteger(1);
        //使用hbase的increment机制进行wordcount
        byte[] rowkey = Bytes.toBytes(word);
        byte[] f = Bytes.toBytes("f1");
        byte[] c = Bytes.toBytes("count");
        try {
            t.incrementColumnValue(rowkey,f,c,count);
        } catch (IOException e) {
        }
    }

    public void cleanup() {
    }

    public void declareOutputFields(OutputFieldsDeclarer declarer) {
    }

    public Map<String, Object> getComponentConfiguration() {
        return null;
    }
}

package com.mao.storm.Hbase;

import org.apache.storm.Config;
import org.apache.storm.LocalCluster;
import org.apache.storm.topology.TopologyBuilder;

/**
 * App
 */
public class App {

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

        TopologyBuilder builder = new TopologyBuilder();
        builder.setSpout("wcspout", new WordCountSpout()).setNumTasks(1);
        builder.setBolt("split-bolt", new SplitBolt(),2).shuffleGrouping("wcspout").setNumTasks(2);
        builder.setBolt("hbase-bolt", new HbaseBolt(),2).shuffleGrouping("split-bolt").setNumTasks(2);

        Config conf = new Config();
        LocalCluster cluster = new LocalCluster();
        cluster.submitTopology("wc", conf, builder.createTopology());

    }
}

package com.mao.storm.Hbase;

import org.apache.storm.task.OutputCollector;
import org.apache.storm.task.TopologyContext;
import org.apache.storm.topology.IRichBolt;
import org.apache.storm.topology.OutputFieldsDeclarer;
import org.apache.storm.tuple.Fields;
import org.apache.storm.tuple.Tuple;
import org.apache.storm.tuple.Values;

import java.util.Map;

/**
 */
public class SplitBolt implements IRichBolt {

    private TopologyContext context ;
    private OutputCollector collector ;

    public void prepare(Map stormConf, TopologyContext context, OutputCollector collector) {
        this.context = context ;
        this.collector = collector ;
    }

    public void execute(Tuple tuple) {
        String line = tuple.getString(0);
        String[] arr = line.split(" ");
        for(String s : arr){
            collector.emit(new Values(s,1));
        }
    }

    public void cleanup() {

    }

    public void declareOutputFields(OutputFieldsDeclarer declarer) {
        declarer.declare(new Fields("word","count"));

    }

    public Map<String, Object> getComponentConfiguration() {
        return null;
    }
}

package com.mao.storm.Hbase;

import org.apache.storm.spout.SpoutOutputCollector;
import org.apache.storm.task.TopologyContext;
import org.apache.storm.topology.IRichSpout;
import org.apache.storm.topology.OutputFieldsDeclarer;
import org.apache.storm.tuple.Fields;
import org.apache.storm.tuple.Values;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Random;

/**
 * Spout
 */
public class WordCountSpout implements IRichSpout{
    private TopologyContext context ;
    private SpoutOutputCollector collector ;

    private List<String> states ;

    private Random r = new Random();

    private int index = 0;

    public void open(Map conf, TopologyContext context, SpoutOutputCollector collector) {
        this.context = context ;
        this.collector = collector ;
        states = new ArrayList<String>();
        states.add("hello world tom");
        states.add("hello world tomas");
        states.add("hello world tomasLee");
        states.add("hello world tomson");
    }

    public void close() {

    }

    public void activate() {

    }

    public void deactivate() {

    }

    public void nextTuple() {
        if(index < 3){
            String line = states.get(r.nextInt(4));
            collector.emit(new Values(line));
            //Util.sendToLocalhost(this, line);
            index ++ ;
        }
    }

    public void ack(Object msgId) {

    }

    public void fail(Object msgId) {

    }

    public void declareOutputFields(OutputFieldsDeclarer declarer) {
        declarer.declare(new Fields("line"));
    }

    public Map<String, Object> getComponentConfiguration() {
        return null;
    }
}

5.复制配置hbase配置文件到resources下
[resources]
hbase-site.xml
hdfs-site.xml

6.执行
启动hbase集群 + storm。

7.查看hbase表数据

 $hbase>get_counter 'ns1:wordcount' , 'word' , 'f1:count'