01.查看原始表

02.删除Hbase数据

2.1 删除指定行键的整条记录

import org.apache.hadoop.conf.Configuration;
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;

/***
 * 删除Hbase中某一条数据
 */
public class DeleteHbaseDataOfAll {
    public static void main(String[] args) throws Exception{
        Configuration conf = new Configuration();
        conf.set("hbase.zookeeper.quorum","192.168.1.10:2181");
        Connection conn = ConnectionFactory.createConnection(conf);
        Table gadaite = conn.getTable(TableName.valueOf("Gadaite"));
        Delete delete = new Delete(Bytes.toBytes("101"));
        gadaite.delete(delete);
        gadaite.close();
        conn.close();
    }
}

​ 执行结果：

​ 行键为”101“的数据已经被删除

2.2 指定列簇删除

​ 指定列簇需要先指定行键

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

public class DeleteHbaseDataOfFamily {
    public static void main(String[] args) throws Exception{
        Configuration conf = new Configuration();
        conf.set("hbase.zookeeper.quorum","192.168.1.10");
        Connection conn = ConnectionFactory.createConnection(conf);
        Table gadaite = conn.getTable(TableName.valueOf("Gadaite"));
        //  new Delete(Bytes.toBytes("这里填写行键是直接删除该行键对应的所有记录"));
        Delete delete = new Delete(Bytes.toBytes("001"));
        Delete delete1 = delete.addFamily(Bytes.toBytes("F1"));
        gadaite.delete(delete1);
        gadaite.close();
        conn.close();

    }
}

​ 执行结果：

​ 001行键下，F1列簇的数据被删除

2.2 指定字段删除

​ 需要先指定行键，列簇，字段

import org.apache.hadoop.conf.Configuration;
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;

public class DelectHbaseDataOfColumn {
    public static void main(String[] args) throws Exception{
        Configuration conf = new Configuration();
        conf.set("hbase.zookeeper.quorum","192.168.1.10");
        Connection conn = ConnectionFactory.createConnection(conf);
        Table gadaite = conn.getTable(TableName.valueOf("Gadaite"));
        Delete delete = new Delete(Bytes.toBytes("001"));
        //  删除某个列簇下指定的某个字段时，使用addColum，并传递两个参数
        Delete delete1 = delete.addColumn(Bytes.toBytes("F2"), Bytes.toBytes("F22"));
        gadaite.delete(delete1);
        gadaite.close();
        conn.close();
    }
}

001行键，F2列簇，F22字段内容被删除