Retrieve Data from apache hadoop hbase HTable - Java Big Data

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Description

Retrieve Data from apache hadoop hbase HTable

Demo Code

import java.io.IOException;

import java.io.IOException;

import org.apache.hadoop.conf.Configuration;

import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.client.Get;
import org.apache.hadoop.hbase.client.HTable;
import org.apache.hadoop.hbase.client.Result;
import org.apache.hadoop.hbase.util.Bytes;

public class RetrieveData {

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

        // Instantiating Configuration class
        Configuration config = HBaseConfiguration.create();

        // Instantiating HTable class
        HTable table = new HTable(config, "emp");

        // Instantiating Get class
        Get g = new Get(Bytes.toBytes("row1"));

        // Reading the data
        Result result = table.get(g);

        // Reading values from Result class object
        byte[] value = result.getValue(Bytes.toBytes("personal"),
                Bytes.toBytes("name"));

        byte[] value1 = result.getValue(Bytes.toBytes("personal"),
                Bytes.toBytes("city"));

        // Printing the values
        String name = Bytes.toString(value);
        String city = Bytes.toString(value1);

        System.out.println("name: " + name + " city: " + city);
    }/*from www.  j av a 2  s. c o  m*/
}

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