HBase批量写入数据

一、HBase安装

1、上传解压

2、修改环境变量

vi /etc/profile

export HBASE_HOME=/home/hadoop/hbase
export PATH=$PATH:$HBASE_HOME/bin

　　

3、修改配置文件

vi hbase-env.sh

export JAVA_HOME=/usr/jdk/
export JAVA_CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export HBASE_OPTS="-XX:+UseConcMarkSweepGC"
export HBASE_MANAGES_ZK=false

vi hbase-site.xml

<configuration>
    <property>
    <name>hbase.master</name>
    <value>master1:60000</value>
    </property>
    <property>
    <name>hbase.master.maxclockskew</name> 
    <value>180000</value>
    </property>
    <property>
    <name>hbase.rootdir</name>
    <value>hdfs://hadoop-cluster1/hbase</value>
    </property>
    <property>
    <name>hbase.cluster.distributed</name> 
    <value>true</value>
    </property>
    <property>
    <name>hbase.zookeeper.quorum</name>
    <value>master1ha,master2,master2ha</value>
    </property>
    <property>
    <name>hbase.zookeeper.property.dataDir</name>
    <value>/home/hadoop/hbase/tmp/zookeeper</value>
    </property>
</configuration>

vi regionservers

h2slave1
h2slave2
h2slave3

　4、发送到其他机器

scp –r /home/hadoop/hbase hadoop@slave1:/home/hadoop
scp –r /home/hadoop/hbase hadoop@slave2:/home/hadoop
scp –r /home/hadoop/hbase hadoop@slave3:/home/hadoop

5、启动

start-hbase.sh

　6、访问

http://master:60010/ 

二、HBase数据模型

 

 

 

Row Key（行健）： 用来检索记录的主键。

访问HBase table中的行，只有三种方式：
1.通过单个row key访问
2.通过row key的range（正则）
3.全表扫描

Columns Family（列簇）：

HBase表中的每个列，都归属于某个列族。

 

三、HBase命令

创建表

create '表名', '列族名1','列族名2','列族名N'

查看所有表

list

描述表

describe  ‘表名’

判断表存在

exists  '表名'

　　判断是否禁用启用表

is_enabled '表名'
is_disabled ‘表名’

添加记录

put  ‘表名’, ‘rowKey’, ‘列族 : 列‘  ,  '值'

查看记录rowkey下的所有数据

get  '表名' , 'rowKey'

查看表中的记录总数

count  '表名'

获取某个列族

get '表名','rowkey','列族'

　　获取某个列族的某个列

get '表名','rowkey','列族：列’

　　删除记录

delete  ‘表名’ ,‘行名’ , ‘列族：列'

删除整行

deleteall '表名','rowkey'

删除一张表

先要屏蔽该表，才能对该表进行删除
第一步 disable ‘表名’ ，第二步  drop '表名'

清空表

truncate '表名'

查看所有记录

scan "表名"  

查看某个表某个列中所有数据

scan "表名" , {COLUMNS=>'列族名:列名'}

四、Java API操作HBase

package cn.itcast_01_hbase;

import java.util.ArrayList;
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.HColumnDescriptor;
import org.apache.hadoop.hbase.HTableDescriptor;
import org.apache.hadoop.hbase.MasterNotRunningException;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.ZooKeeperConnectionException;
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.Get;
import org.apache.hadoop.hbase.client.HBaseAdmin;
import org.apache.hadoop.hbase.client.HConnection;
import org.apache.hadoop.hbase.client.HConnectionManager;
import org.apache.hadoop.hbase.client.Put;
import org.apache.hadoop.hbase.client.Result;
import org.apache.hadoop.hbase.client.ResultScanner;
import org.apache.hadoop.hbase.client.Scan;
import org.apache.hadoop.hbase.client.Table;
import org.apache.hadoop.hbase.filter.ColumnPrefixFilter;
import org.apache.hadoop.hbase.filter.CompareFilter;
import org.apache.hadoop.hbase.filter.FilterList;
import org.apache.hadoop.hbase.filter.FilterList.Operator;
import org.apache.hadoop.hbase.filter.RegexStringComparator;
import org.apache.hadoop.hbase.filter.RowFilter;
import org.apache.hadoop.hbase.filter.SingleColumnValueFilter;
import org.apache.hadoop.hbase.util.Bytes;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

public class HbaseTest {

    /**
     * 配置ss
     */
    static Configuration config = null;
    private Connection connection = null;
    private Table table = null;

    @Before Hbase依赖zookeeper
    public void init() throws Exception {
        config = HBaseConfiguration.create();// 配置
        config.set("hbase.zookeeper.quorum", "master,work1,work2");// zookeeper地址
        config.set("hbase.zookeeper.property.clientPort", "2181");// zookeeper端口
        connection = ConnectionFactory.createConnection(config);
        table = connection.getTable(TableName.valueOf("user"));
    }

    /**
     * 创建一个表
     */
    @Test
    public void createTable() throws Exception {
        // 创建表管理类
        HBaseAdmin admin = new HBaseAdmin(config); // hbase表管理
        // 创建表描述类
        TableName tableName = TableName.valueOf("test3"); // 表名称
        HTableDescriptor desc = new HTableDescriptor(tableName);
        // 创建列族的描述类
        HColumnDescriptor family = new HColumnDescriptor("info"); // 列族
        // 将列族添加到表中
        desc.addFamily(family);
        HColumnDescriptor family2 = new HColumnDescriptor("info2"); // 列族
        // 将列族添加到表中
        desc.addFamily(family2);
        // 创建表
        admin.createTable(desc); // 创建表
    }

    @Test
    @SuppressWarnings("deprecation")
    public void deleteTable() throws MasterNotRunningException,
            ZooKeeperConnectionException, Exception {
        HBaseAdmin admin = new HBaseAdmin(config);
        admin.disableTable("test3");
        admin.deleteTable("test3");
        admin.close();
    }

    /**
     * 向hbase中增加数据
     */
    @SuppressWarnings({ "deprecation", "resource" })
    @Test
    public void insertData() throws Exception {
        table.setAutoFlushTo(false);
        table.setWriteBufferSize(534534534);
        ArrayList<Put> arrayList = new ArrayList<Put>();
        for (int i = 21; i < 50; i++) {
            Put put = new Put(Bytes.toBytes("1234"+i));
            put.add(Bytes.toBytes("info"), Bytes.toBytes("name"), Bytes.toBytes("wangwu"+i));
            put.add(Bytes.toBytes("info"), Bytes.toBytes("password"), Bytes.toBytes(1234+i));
            arrayList.add(put);
        }
        
        //插入数据
        table.put(arrayList);
        //提交
        table.flushCommits();
    }

    /**
     * 修改数据
     */
    @Test
    public void uodateData() throws Exception {
        Put put = new Put(Bytes.toBytes("1234"));
        put.add(Bytes.toBytes("info"), Bytes.toBytes("namessss"), Bytes.toBytes("lisi1234"));
        put.add(Bytes.toBytes("info"), Bytes.toBytes("password"), Bytes.toBytes(1234));
        //插入数据
        table.put(put);
        //提交
        table.flushCommits();
    }

    /**
     * 删除数据
     * 
     * @throws Exception
     */
    @Test
    public void deleteDate() throws Exception {
        Delete delete = new Delete(Bytes.toBytes("1234"));
        table.delete(delete);
        table.flushCommits();
    }

    /**
     * 单条查询
     */
    @Test
    public void queryData() throws Exception {
        Get get = new Get(Bytes.toBytes("1234"));
        Result result = table.get(get);
        System.out.println(Bytes.toInt(result.getValue(Bytes.toBytes("info"), Bytes.toBytes("password"))));
        System.out.println(Bytes.toString(result.getValue(Bytes.toBytes("info"), Bytes.toBytes("namessss"))));
        System.out.println(Bytes.toString(result.getValue(Bytes.toBytes("info"), Bytes.toBytes("sex"))));
    }

    /**
     * 全表扫描
     */
    @Test
    public void scanData() throws Exception {
        Scan scan = new Scan();
        //scan.addFamily(Bytes.toBytes("info"));
        //scan.addColumn(Bytes.toBytes("info"), Bytes.toBytes("password"));
        scan.setStartRow(Bytes.toBytes("wangsf_0"));
        scan.setStopRow(Bytes.toBytes("wangwu"));
        ResultScanner scanner = table.getScanner(scan);
        for (Result result : scanner) {
            System.out.println(Bytes.toInt(result.getValue(Bytes.toBytes("info"), Bytes.toBytes("password"))));
            System.out.println(Bytes.toString(result.getValue(Bytes.toBytes("info"), Bytes.toBytes("name"))));
            //System.out.println(Bytes.toInt(result.getValue(Bytes.toBytes("info2"), Bytes.toBytes("password"))));
            //System.out.println(Bytes.toString(result.getValue(Bytes.toBytes("info2"), Bytes.toBytes("name"))));
        }
    }

    /**
     * 全表扫描的过滤器
     * 列值过滤器
     */
    @Test
    public void scanDataByFilter1() throws Exception {

        // 创建全表扫描的scan
        Scan scan = new Scan();
        //过滤器：列值过滤器
        SingleColumnValueFilter filter = new SingleColumnValueFilter(Bytes.toBytes("info"),
                Bytes.toBytes("name"), CompareFilter.CompareOp.EQUAL,
                Bytes.toBytes("zhangsan2"));
        // 设置过滤器
        scan.setFilter(filter);

        // 打印结果集
        ResultScanner scanner = table.getScanner(scan);
        for (Result result : scanner) {
            System.out.println(Bytes.toInt(result.getValue(Bytes.toBytes("info"), Bytes.toBytes("password"))));
            System.out.println(Bytes.toString(result.getValue(Bytes.toBytes("info"), Bytes.toBytes("name"))));
            //System.out.println(Bytes.toInt(result.getValue(Bytes.toBytes("info2"), Bytes.toBytes("password"))));
            //System.out.println(Bytes.toString(result.getValue(Bytes.toBytes("info2"), Bytes.toBytes("name"))));
        }

    }
    /**
     * rowkey过滤器
     */
    @Test
    public void scanDataByFilter2() throws Exception {
        
        // 创建全表扫描的scan
        Scan scan = new Scan();
        //匹配rowkey以wangsenfeng开头的
        RowFilter filter = new RowFilter(CompareFilter.CompareOp.EQUAL, new RegexStringComparator("^12341"));
        // 设置过滤器
        scan.setFilter(filter);
        // 打印结果集
        ResultScanner scanner = table.getScanner(scan);
        for (Result result : scanner) {
            System.out.println(Bytes.toInt(result.getValue(Bytes.toBytes("info"), Bytes.toBytes("password"))));
            System.out.println(Bytes.toString(result.getValue(Bytes.toBytes("info"), Bytes.toBytes("name"))));
            //System.out.println(Bytes.toInt(result.getValue(Bytes.toBytes("info2"), Bytes.toBytes("password"))));
            //System.out.println(Bytes.toString(result.getValue(Bytes.toBytes("info2"), Bytes.toBytes("name"))));
        }

        
    }
    
    /**
     * 匹配列名前缀
     */
    @Test
    public void scanDataByFilter3() throws Exception {
        
        // 创建全表扫描的scan
        Scan scan = new Scan();
        //匹配rowkey以wangsenfeng开头的
        ColumnPrefixFilter filter = new ColumnPrefixFilter(Bytes.toBytes("na"));
        // 设置过滤器
        scan.setFilter(filter);
        // 打印结果集
        ResultScanner scanner = table.getScanner(scan);
        for (Result result : scanner) {
            System.out.println("rowkey：" + Bytes.toString(result.getRow()));
            System.out.println("info:name："
                    + Bytes.toString(result.getValue(Bytes.toBytes("info"),
                            Bytes.toBytes("name"))));
            // 判断取出来的值是否为空
            if (result.getValue(Bytes.toBytes("info"), Bytes.toBytes("age")) != null) {
                System.out.println("info:age："
                        + Bytes.toInt(result.getValue(Bytes.toBytes("info"),
                                Bytes.toBytes("age"))));
            }
            // 判断取出来的值是否为空
            if (result.getValue(Bytes.toBytes("info"), Bytes.toBytes("sex")) != null) {
                System.out.println("infi:sex："
                        + Bytes.toInt(result.getValue(Bytes.toBytes("info"),
                                Bytes.toBytes("sex"))));
            }
            // 判断取出来的值是否为空
            if (result.getValue(Bytes.toBytes("info2"), Bytes.toBytes("name")) != null) {
                System.out
                .println("info2:name："
                        + Bytes.toString(result.getValue(
                                Bytes.toBytes("info2"),
                                Bytes.toBytes("name"))));
            }
            // 判断取出来的值是否为空
            if (result.getValue(Bytes.toBytes("info2"), Bytes.toBytes("age")) != null) {
                System.out.println("info2:age："
                        + Bytes.toInt(result.getValue(Bytes.toBytes("info2"),
                                Bytes.toBytes("age"))));
            }
            // 判断取出来的值是否为空
            if (result.getValue(Bytes.toBytes("info2"), Bytes.toBytes("sex")) != null) {
                System.out.println("info2:sex："
                        + Bytes.toInt(result.getValue(Bytes.toBytes("info2"),
                                Bytes.toBytes("sex"))));
            }
        }
        
    }
    /**
     * 过滤器集合
     */
    @Test
    public void scanDataByFilter4() throws Exception {
        
        // 创建全表扫描的scan
        Scan scan = new Scan();
        //过滤器集合：MUST_PASS_ALL（and）,MUST_PASS_ONE(or)
        FilterList filterList = new FilterList(Operator.MUST_PASS_ONE);
        //匹配rowkey以wangsenfeng开头的
        RowFilter filter = new RowFilter(CompareFilter.CompareOp.EQUAL, new RegexStringComparator("^wangsenfeng"));
        //匹配name的值等于wangsenfeng
        SingleColumnValueFilter filter2 = new SingleColumnValueFilter(Bytes.toBytes("info"),
                Bytes.toBytes("name"), CompareFilter.CompareOp.EQUAL,
                Bytes.toBytes("zhangsan"));
        filterList.addFilter(filter);
        filterList.addFilter(filter2);
        // 设置过滤器
        scan.setFilter(filterList);
        // 打印结果集
        ResultScanner scanner = table.getScanner(scan);
        for (Result result : scanner) {
            System.out.println("rowkey：" + Bytes.toString(result.getRow()));
            System.out.println("info:name："
                    + Bytes.toString(result.getValue(Bytes.toBytes("info"),
                            Bytes.toBytes("name"))));
            // 判断取出来的值是否为空
            if (result.getValue(Bytes.toBytes("info"), Bytes.toBytes("age")) != null) {
                System.out.println("info:age："
                        + Bytes.toInt(result.getValue(Bytes.toBytes("info"),
                                Bytes.toBytes("age"))));
            }
            // 判断取出来的值是否为空
            if (result.getValue(Bytes.toBytes("info"), Bytes.toBytes("sex")) != null) {
                System.out.println("infi:sex："
                        + Bytes.toInt(result.getValue(Bytes.toBytes("info"),
                                Bytes.toBytes("sex"))));
            }
            // 判断取出来的值是否为空
            if (result.getValue(Bytes.toBytes("info2"), Bytes.toBytes("name")) != null) {
                System.out
                .println("info2:name："
                        + Bytes.toString(result.getValue(
                                Bytes.toBytes("info2"),
                                Bytes.toBytes("name"))));
            }
            // 判断取出来的值是否为空
            if (result.getValue(Bytes.toBytes("info2"), Bytes.toBytes("age")) != null) {
                System.out.println("info2:age："
                        + Bytes.toInt(result.getValue(Bytes.toBytes("info2"),
                                Bytes.toBytes("age"))));
            }
            // 判断取出来的值是否为空
            if (result.getValue(Bytes.toBytes("info2"), Bytes.toBytes("sex")) != null) {
                System.out.println("info2:sex："
                        + Bytes.toInt(result.getValue(Bytes.toBytes("info2"),
                                Bytes.toBytes("sex"))));
            }
        }
        
    }

    @After
    public void close() throws Exception {
        table.close();
        connection.close();
    }

}

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