hbase僞分佈安裝和hbase案例

一、安裝hbase

1、下載

wget https://mirrors.tuna.tsinghua.edu.cn/apache/hbase/stable/hbase-2.2.4-bin.tar.gz

2、解壓並修改文件名

tar xzvf hbase-2.2.4-bin.tar.gz -C /usr/local/
mv ./hbase-2.2.4 ./hbase

3、修改配置文件並使他生效

vi /etc/profile
添加以下內容：
export HBASE_HOME=/usr/local/hbase
export PATH=$PATH:$HBASE_HOME/bin
使配置文件生效：
source /etc/profile

4、修改配置文件 hbase-env.sh

添加內容

export JAVA_HOME=/usr/lib/jvm/java

5、配置hbase-site.xml

添加內容

<property>
    <name>hbase.rootdir</name>
    <value>hdfs://node2:9000/hbase</value>
</property>
<property>
    <name>hbase.cluster.distributed</name>
    <value>true</value>
</property>
<property>
    <name>hbase.zookeeper.quorum</name>
    <value>node2</value>
</property>
</configuration>

6、啓動hbase

./bin/start-hbase.sh 

7、進入hbase shell

hbase shell

二、hbase shell例子

1、創建表

create 'student','info'

2、插入數據到表

put 'student','1001','info:sex','male'
put 'student','1001','info:age','18'
put 'student','1002','info:name','fu'
put 'student','1002','info:sex','female'
put 'student','1002','info:age','20'

3、掃描查看錶數據

scan 'student'
scan 'student',{STARTROW => '1001', STOPROW =>'1001'}
scan 'student',{STARTROW => '1001'}

4、查看錶結構

 describe ‘student’

5、更新指定字段的數據

 put 'student','1001','info:name','chen'
 put 'student','1001','info:age','21'

6、查看“指定行”或“指定列族:列”的數據

get 'student','1001'
get 'student','1001','info:name'

7、統計表數據行數

 count 'student'

8、刪除某rowkey的全部數據

9、刪除某一列數據

10、刪除表

需要先讓表位disable狀態纔可以刪除

如果遇到這種情況 可以輸入 >’

三、Java API

1、配置 pom.xml

<?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">
    <modelVersion>4.0.0</modelVersion>

    <groupId>org.example</groupId>
    <artifactId>hd-hbase</artifactId>
    <version>1.0-SNAPSHOT</version>

    <dependencies>
        <dependency>
            <groupId>org.apache.hbase</groupId>
            <artifactId>hbase-server</artifactId>
            <version>2.2.4</version>
        </dependency>
        <dependency>
            <groupId>org.apache.hbase</groupId>
            <artifactId>hbase-client</artifactId>
            <version>2.2.4</version>
        </dependency>
        <dependency>
            <groupId>jdk.tools</groupId>
            <artifactId>jdk.tools</artifactId>
            <version>1.8</version>
            <scope>system</scope>
            <systemPath>C:/Program Files/Java/jdk1.8.0_131/lib/tools.jar</systemPath>

        </dependency>
    </dependencies>
</project>

2、創建表t1

package com.hadoop.hbase;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.HColumnDescriptor;
import org.apache.hadoop.hbase.HTableDescriptor;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.client.*;
import org.apache.hadoop.hbase.util.Bytes;

import java.io.IOException;

public class HbaseCreateTable {
    public static void main(String[] args) throws IOException {
        Configuration conf = HBaseConfiguration.create();
        conf.set("hbase.zookeeper.quorum","192.168.100.102:2181");
        Connection conn = ConnectionFactory.createConnection(conf);
        Admin admin = conn.getAdmin();
        TableName tableName = TableName.valueOf("t1");
        HTableDescriptor dese = new HTableDescriptor((tableName));
        HColumnDescriptor family = new HColumnDescriptor("f1");
        dese.addFamily(family);
        admin.createTable(dese);
        System.out.println("Create table success!");
    }
}

運行

在hbase shell查看

3、向t1插入數據

package com.hadoop.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.Put;
import org.apache.hadoop.hbase.client.Table;
import org.apache.hadoop.hbase.util.Bytes;

import java.io.IOException;

public class hbasePutData {
    public static void main(String[] args) throws IOException {
        Configuration conf = HBaseConfiguration.create();
        conf.set("hbase.zookeeper.quorum","192.168.100.102:2181");
        Connection conn = ConnectionFactory.createConnection(conf);
        TableName tableName = TableName.valueOf("t1");
        Table table = conn.getTable(tableName);
        Put put = new Put(Bytes.toBytes("row1"));
        put.addColumn(Bytes.toBytes("f1"),Bytes.toBytes("name"),Bytes.toBytes("xiaoming"));
        put.addColumn(Bytes.toBytes("f1"),Bytes.toBytes("age"),Bytes.toBytes("20"));
        put.addColumn(Bytes.toBytes("f1"),Bytes.toBytes("address"),Bytes.toBytes("beijing"));

        Put put2 = new Put(Bytes.toBytes("row2"));
        put2.addColumn(Bytes.toBytes("f1"),Bytes.toBytes("name"),Bytes.toBytes("fu"));
        put2.addColumn(Bytes.toBytes("f1"),Bytes.toBytes("age"),Bytes.toBytes("21"));
        put2.addColumn(Bytes.toBytes("f1"),Bytes.toBytes("address"),Bytes.toBytes("guangzhou"));

        table.put(put);
        table.put(put2);
        table.close();
        System.out.println("put data success!");
    }
}

運行：

在hbase shell查看

4、查詢t1的row1

package com.hadoop.hbase;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.Cell;
import org.apache.hadoop.hbase.CellUtil;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.client.*;

import java.io.IOException;

public class HbaseGetData {
    public static void main(String[] args) throws IOException {
        Configuration conf = HBaseConfiguration.create();
        conf.set("hbase.zookeeper.quorum","192.168.100.102:2181");
        Connection conn = ConnectionFactory.createConnection(conf);

        TableName tableName = TableName.valueOf("t1");
        Table table = conn.getTable(tableName.valueOf("t1"));
        Get get = new Get("row1".getBytes());
        Result r = table.get(get);
        for (Cell cell:r.rawCells()){
            String family=new String(CellUtil.cloneFamily(cell));
            String qualifier = new String(CellUtil.cloneQualifier(cell));
            String value = new String(CellUtil.cloneValue(cell));
            System.out.println("列:"+family+":"+qualifier+"-----值:"+value);
        }
    }
}

運行：

5、刪除數據

package com.hadoop.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.Delete;
import org.apache.hadoop.hbase.client.Table;
import org.apache.hadoop.hbase.util.Bytes;

import java.io.IOException;

public class Hbasedelete {
    public static void main(String[] args) throws IOException {
        Configuration conf = HBaseConfiguration.create();
        conf.set("hbase.zookeeper.quorum", "192.168.100.102:2181");
        Connection conn = ConnectionFactory.createConnection(conf);
        TableName tableName = TableName.valueOf("t1");
        Table table = conn.getTable(tableName);
        Delete delete = new Delete(Bytes.toBytes("row1"));
        table.delete (delete);
        table.close();
        System.out.println("delete data success!!");
    }
}

運行：

在hbase shell查看 t1中的rowkey 爲row1的行已經被刪除

四、錯誤及解決

Exception in thread "main" org.apache.hadoop.hbase.client.RetriesExhaustedException: Failed after attempts=16, exceptions:

Caused by: org.apache.hadoop.hbase.MasterNotRunningException: java.net.UnknownHostException: can not resolve master,16000,1592301072837

在Windows操作修改 hosts文件 添加虛擬機映射

比如：

還有記得關防火牆！！！