日期:2014-05-16  浏览次数:20484 次

HBase 应用Demo

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import org.apache.hadoop.hbase.client.Result;
import org.apache.hadoop.hbase.client.ResultScanner;
import org.junit.Test;

public class HBaseHelperTest {

	@Test
	public void getOneRecord() {
		try {
			Result rs = HBaseHelper.getOneRecord("HBASE_TABLE_NAME", "KEY");
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	@Test
	public void getAllRecord() {
		try {
//			ResultScanner rs = HBaseHelper.getAllRecord("LP_PRICE_CHANNEL");
//			ResultScanner rs = HBaseHelper.getAllRecord("LP_LINE");
//			ResultScanner rs = HBaseHelper.getAllRecord("LP_FLIGHT");
			
//			String[] family = new String[1];
//			family[0] = "planeinfo";
//			ResultScanner scan = HBaseHelper.getRecords("LP_LINE", "00002CANDLC2013012500", "00002CANDLC2013012523", family, null);
			
//			List<Filter> filters = new ArrayList<Filter>();
//			Filter filter = new PrefixFilter("08".getBytes());  
//			filters.add(filter);
//			filter = new PrefixFilter("09".getBytes());  
//			filters.add(filter);
//			String[] family = new String[1];
//			family[0] = "planeinfo";
//			Filter fil = new SingleColumnValueFilter(Bytes.toBytes("planeinfo"), Bytes.toBytes("carrierFullName"), CompareOp.EQUAL,Bytes.toBytes("中国南方航空公司"));
//			filters.add(filter);
//			ResultScanner scan = HBaseHelper.getRecords("LP_LINE", "00002CANDLC2013010000", "00002CANDLC2013019999", family, null);
			

//			ResultScanner rs = HBaseHelper.getAllRecord("LP_FLIGHT");
			String[] family = new String[1];
			family[0] = "planeinfo";
			ResultScanner scan = HBaseHelper.getRecords("LP_FLIGHT", "00002HGHCAN00CZ38302013021200", "00002HGHCAN00CZ38302013021223", family, null);
			HBaseHelper.printResult(scan);
			
		} catch (Exception e) {
			// TODO: handle exception
		}
	}

}

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HbaseDriverManager

import java.io.IOException;
import java.util.ArrayList;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.MasterNotRunningException;
import org.apache.hadoop.hbase.ZooKeeperConnectionException;
import org.apache.hadoop.hbase.client.HBaseAdmin;
import org.apache.hadoop.hbase.client.HTable;
import org.apache.hadoop.hbase.client.HTableInterface;
import org.apache.hadoop.hbase.client.HTablePool;
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.util.Bytes;

public class HbaseDriverManager {

	private static Configuration conf;

	private static HTablePool hTablePool;

	private static int POOL_MAX_SIZE = 20;

	/**
	 * 获取Hbase配置信息
	 * 
	 * @return
	 */
	public static Configuration getHbaseConf() {

		return conf;
	}

	static {
		conf = new Configuration();// FIXME TSS 此处修改为可配置
		// 与hbase/conf/hbase-site.xml中hbase.zookeeper.quorum配置的值相同
		conf.set("hbase.zookeeper.quorum", "slaver_1");
		// 与hbase/conf/hbase-site.xml中hbase.zookeeper.property.clientPort配置的值相同
		conf.set("hbase.zookeeper.property.clientPort", "2181");
		conf = HBaseConfiguration.create(conf);
	}



	/**
	 * 获取HBaseAdmin
	 * 
	 * @return
	 */
	public static HBaseAdmin getHBaseAdmin() {
		HBaseAdmin habseAdmin = null;
		try {
			habseAdmin = new HBaseAdmin(conf);
		} catch (MasterNotRunningException e) {
			e.printStackTrace();
		} catch (ZooKeeperConnectionException e) {
			e.printStackTrace();
		}

		return habseAdmin;
	}

	/**
	 * 返回htablepool连接池中的一个htable
	 * 
	 * @param tableName
	 * @return
	 */
	public static synchronized HTable getHtable(String tableName) {

		if (hTablePool != null)
			return (HTable) hTablePool.getTable(tableName);// 如果hTablePool对象已经存在,直接取出一个htable
		else {
			hTablePool = new HTablePool(conf, POOL_MAX_SIZE);// 注意这个值设置的是每个htable表在pool中的最大值
			return (HTable) hTablePool.getTable(tableName);
		}
	}

	@SuppressWarnings("deprecation")
	public static