共计 2521 个字符,预计需要花费 7 分钟才能阅读完成。
今天就跟大家聊聊有关 Hbase 的 java_API 操作,可能很多人都不太了解,为了让大家更加了解,丸趣 TV 小编给大家总结了以下内容,希望大家根据这篇文章可以有所收获。
package Hbase;
import java.io.IOException;
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.MasterNotRunningException;
import org.apache.hadoop.hbase.ZooKeeperConnectionException;
import org.apache.hadoop.hbase.client.Get;
import org.apache.hadoop.hbase.client.HBaseAdmin;
import org.apache.hadoop.hbase.client.HTable;
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;
public class HbaseApp {
public static final String TABLE_NAME = table1
public static final String FAMILY_NAME = family1
public static final String ROW_KEY = rowkey1
public static void main(String[] args) throws Exception {
// 创建表、删除表使用 HbaseAdmin
Configuration conf = HBaseConfiguration.create();
conf.set( hbase.rootdir , hdfs://hadoop:9000/hbase
conf.set( hbase.zookeeper.quorum , hadoop
HBaseAdmin hBaseAdmin = new HBaseAdmin(conf);
//createTable(hBaseAdmin);
//deleteTabele(hBaseAdmin);
// 插入记录、查询一条记录、查询所有记录 HTable
HTable hTable = new HTable(conf, TABLE_NAME);
//putRecord(hTable);
//getRecord(hTable);
Scan scan = new Scan();
ResultScanner scanner = hTable.getScanner(scan);
for (Result result : scanner) {byte[] value = result.getValue(FAMILY_NAME.getBytes(), age .getBytes());
System.out.println(result+ \t + new String(value));
hTable.close();
private static void getRecord(HTable hTable) throws IOException {Get get = new Get(ROW_KEY.getBytes());
Result result = hTable.get(get);
System.out.println(new String(result.getValue(FAMILY_NAME.getBytes(), age .getBytes())));
private static void putRecord(HTable hTable) throws IOException {Put put = new Put(ROW_KEY.getBytes());
put.add(FAMILY_NAME.getBytes(), age .getBytes(), 25 .getBytes());
hTable.put(put);
private static void deleteTabele(HBaseAdmin hBaseAdmin) throws IOException {hBaseAdmin.disableTable(TABLE_NAME);
hBaseAdmin.deleteTable(TABLE_NAME);
private static void createTable(HBaseAdmin hBaseAdmin) throws IOException {if (!hBaseAdmin.tableExists(TABLE_NAME)) {HTableDescriptor tableDescripetor = new HTableDescriptor(TABLE_NAME);
HColumnDescriptor family = new HColumnDescriptor(FAMILY_NAME);
tableDescripetor.addFamily(family);
hBaseAdmin.createTable(tableDescripetor);
}
看完上述内容,你们对 Hbase 的 java_API 操作有进一步的了解吗?如果还想了解更多知识或者相关内容,请关注丸趣 TV 行业资讯频道,感谢大家的支持。
正文完