HBase-java api 基本操作

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使用的是完全分布式，详细信息为：

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操作的Java 代码（抄的别人的）

package org.admln.hbase;

import java.util.ArrayList;
import java.util.List;

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.KeyValue;
import org.apache.hadoop.hbase.TableName;
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.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;
import org.apache.hadoop.hbase.util.Bytes;

public class OperateTable {
    // 声明静态配置
    private static Configuration conf = null;
    static {
        conf = HBaseConfiguration.create();
        conf.set("hbase.zookeeper.quorum", "slave1");
        conf.set("hbase.zookeeper.property.clientPort", "2181");
    }

    // 创建数据库表
    public static void createTable(String tableName, String[] columnFamilys)
            throws Exception {
        // 新建一个数据库管理员
        HBaseAdmin hAdmin = new HBaseAdmin(conf);

        if (hAdmin.tableExists(tableName)) {
            System.out.println("表已经存在");
            System.exit(0);
        } else {
            // 新建一个 scores 表的描述
            HTableDescriptor tableDesc = new HTableDescriptor(
                    TableName.valueOf(tableName));
            // 在描述里添加列族
            for (String columnFamily : columnFamilys) {
                tableDesc.addFamily(new HColumnDescriptor(columnFamily));
            }
            // 根据配置好的描述建表
            hAdmin.createTable(tableDesc);
            System.out.println("创建表成功");
        }
    }

    // 删除数据库表
    public static void deleteTable(String tableName) throws Exception {
        // 新建一个数据库管理员
        HBaseAdmin hAdmin = new HBaseAdmin(conf);

        if (hAdmin.tableExists(tableName)) {
            // 关闭一个表
            hAdmin.disableTable(tableName);
            // 删除一个表
            hAdmin.deleteTable(tableName);
            System.out.println("删除表成功");

        } else {
            System.out.println("删除的表不存在");
            System.exit(0);
        }
    }

    // 添加一条数据
    public static void addRow(String tableName, String row,
            String columnFamily, String column, String value) throws Exception {
        HTable table = new HTable(conf, tableName);
        Put put = new Put(Bytes.toBytes(row));
        // 参数出分别：列族、列、值
        put.add(Bytes.toBytes(columnFamily), Bytes.toBytes(column),
                Bytes.toBytes(value));
        table.put(put);
    }

    // 删除一条数据
    public static void delRow(String tableName, String row) throws Exception {
        HTable table = new HTable(conf, tableName);
        Delete del = new Delete(Bytes.toBytes(row));
        table.delete(del);
    }

    // 删除多条数据
    public static void delMultiRows(String tableName, String[] rows)
            throws Exception {
        HTable table = new HTable(conf, tableName);
        List<Delete> list = new ArrayList<Delete>();

        for (String row : rows) {
            Delete del = new Delete(Bytes.toBytes(row));
            list.add(del);
        }

        table.delete(list);
    }

    // get row
    public static void getRow(String tableName, String row) throws Exception {
        HTable table = new HTable(conf, tableName);
        Get get = new Get(Bytes.toBytes(row));
        Result result = table.get(get);
        // 输出结果
        for (KeyValue rowKV : result.raw()) {
            System.out.print("Row Name: " + new String(rowKV.getRow()) + " ");
            System.out.print("Timestamp: " + rowKV.getTimestamp() + " ");
            System.out.print("column Family: " + new String(rowKV.getFamily())
                    + " ");
            System.out.print("Row Name:  " + new String(rowKV.getQualifier())
                    + " ");
            System.out.println("Value: " + new String(rowKV.getValue()) + " ");
        }
    }

    // get all records
    public static void getAllRows(String tableName) throws Exception {
        HTable table = new HTable(conf, tableName);
        Scan scan = new Scan();
        ResultScanner results = table.getScanner(scan);
        // 输出结果
        for (Result result : results) {
            for (KeyValue rowKV : result.raw()) {
                System.out.print("Row Name: " + new String(rowKV.getRow())
                        + " ");
                System.out.print("Timestamp: " + rowKV.getTimestamp() + " ");
                System.out.print("column Family: "
                        + new String(rowKV.getFamily()) + " ");
                System.out.print("Row Name:  "
                        + new String(rowKV.getQualifier()) + " ");
                System.out.println("Value: " + new String(rowKV.getValue())
                        + " ");
            }
        }
    }

    // main
    public static void main(String[] args) {
        try {
            String tableName = "users2";

            // 第一步：创建数据库表：“users2”
            String[] columnFamilys = { "info", "course" };
            OperateTable.createTable(tableName, columnFamilys);

            // 第二步：向数据表的添加数据
            // 添加第一行数据
            OperateTable.addRow(tableName, "tht", "info", "age", "20");
            OperateTable.addRow(tableName, "tht", "info", "sex", "boy");
            OperateTable.addRow(tableName, "tht", "course", "china", "97");
            OperateTable.addRow(tableName, "tht", "course", "math", "128");
            OperateTable.addRow(tableName, "tht", "course", "english", "85");
            // 添加第二行数据
            OperateTable.addRow(tableName, "xiaoxue", "info", "age", "19");
            OperateTable.addRow(tableName, "xiaoxue", "info", "sex", "boy");
            OperateTable.addRow(tableName, "xiaoxue", "course", "china", "90");
            OperateTable.addRow(tableName, "xiaoxue", "course", "math", "120");
            OperateTable
                    .addRow(tableName, "xiaoxue", "course", "english", "90");
            // 添加第三行数据
            OperateTable.addRow(tableName, "qingqing", "info", "age", "18");
            OperateTable.addRow(tableName, "qingqing", "info", "sex", "girl");
            OperateTable
                    .addRow(tableName, "qingqing", "course", "china", "100");
            OperateTable.addRow(tableName, "qingqing", "course", "math", "100");
            OperateTable.addRow(tableName, "qingqing", "course", "english",
                    "99");
            // 第三步：获取一条数据
            System.out.println("获取一条数据");
            OperateTable.getRow(tableName, "tht");
            // 第四步：获取所有数据
            System.out.println("获取所有数据");
            OperateTable.getAllRows(tableName);
            // 第五步：删除一条数据
            System.out.println("删除一条数据");
            OperateTable.delRow(tableName, "tht");
            OperateTable.getAllRows(tableName);
            // 第六步：删除多条数据
            System.out.println("删除多条数据");
            String[] rows = { "xiaoxue", "qingqing" };
            OperateTable.delMultiRows(tableName, rows);
            OperateTable.getAllRows(tableName);
            // 第八步：删除数据库
            System.out.println("删除数据库");
            OperateTable.deleteTable(tableName);

        } catch (Exception err) {
            err.printStackTrace();
        }
    }
}

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运行结果为：

2014-11-11 14:09:00,368 WARN  util.NativeCodeLoader (NativeCodeLoader.java:<clinit>(62)) - Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
2014-11-11 14:09:00,455 INFO  zookeeper.ZooKeeper (Environment.java:logEnv(100)) - Client environment:zookeeper.version=3.4.5-1392090, built on 09/30/2012 17:52 GMT
2014-11-11 14:09:00,455 INFO  zookeeper.ZooKeeper (Environment.java:logEnv(100)) - Client environment:host.name=WZJ-20140910JYZ
2014-11-11 14:09:00,455 INFO  zookeeper.ZooKeeper (Environment.java:logEnv(100)) - Client environment:java.version=1.7.0_72
2014-11-11 14:09:00,455 INFO  zookeeper.ZooKeeper (Environment.java:logEnv(100)) - Client environment:java.vendor=Oracle Corporation
2014-11-11 14:09:00,455 INFO  zookeeper.ZooKeeper (Environment.java:logEnv(100)) - Client environment:java.home=C:Program Files (x86)Javajre7
2014-11-11 14:09:00,455 INFO  zookeeper.ZooKeeper (Environment.java:logEnv(100)) - Client environment:java.class.path= 。。。省略
2014-11-11 14:09:00,456 INFO  zookeeper.ZooKeeper (Environment.java:logEnv(100)) - Client environment:java.io.tmpdir=C:UsersADMINI~1AppDataLocalTemp
2014-11-11 14:09:00,456 INFO  zookeeper.ZooKeeper (Environment.java:logEnv(100)) - Client environment:java.compiler=<NA>
2014-11-11 14:09:00,456 INFO  zookeeper.ZooKeeper (Environment.java:logEnv(100)) - Client environment:os.name=Windows 7
2014-11-11 14:09:00,456 INFO  zookeeper.ZooKeeper (Environment.java:logEnv(100)) - Client environment:os.arch=x86
2014-11-11 14:09:00,456 INFO  zookeeper.ZooKeeper (Environment.java:logEnv(100)) - Client environment:os.version=6.1
2014-11-11 14:09:00,456 INFO  zookeeper.ZooKeeper (Environment.java:logEnv(100)) - Client environment:user.name=Administrator
2014-11-11 14:09:00,456 INFO  zookeeper.ZooKeeper (Environment.java:logEnv(100)) - Client environment:user.home=C:UsersAdministrator
2014-11-11 14:09:00,456 INFO  zookeeper.ZooKeeper (Environment.java:logEnv(100)) - Client environment:user.dir=D:eclipseWorkspace32hbase
2014-11-11 14:09:00,458 INFO  zookeeper.ZooKeeper (ZooKeeper.java:<init>(438)) - Initiating client connection, connectString=slave1:2181 sessionTimeout=90000 watcher=hconnection-0x21801b
2014-11-11 14:09:00,482 INFO  zookeeper.RecoverableZooKeeper (RecoverableZooKeeper.java:<init>(120)) - Process identifier=hconnection-0x21801b connecting to ZooKeeper ensemble=slave1:2181
2014-11-11 14:09:00,498 INFO  zookeeper.ClientCnxn (ClientCnxn.java:logStartConnect(966)) - Opening socket connection to server slave1/192.168.126.135:2181. Will not attempt to authenticate using SASL (unknown error)
2014-11-11 14:09:00,500 INFO  zookeeper.ClientCnxn (ClientCnxn.java:primeConnection(849)) - Socket connection established to slave1/192.168.126.135:2181, initiating session
2014-11-11 14:09:00,513 INFO  zookeeper.ClientCnxn (ClientCnxn.java:onConnected(1207)) - Session establishment complete on server slave1/192.168.126.135:2181, sessionid = 0x1499d5df1d6002d, negotiated timeout = 90000
2014-11-11 14:09:00,680 INFO  zookeeper.ZooKeeper (ZooKeeper.java:<init>(438)) - Initiating client connection, connectString=slave1:2181 sessionTimeout=90000 watcher=catalogtracker-on-hconnection-0x21801b
2014-11-11 14:09:00,683 INFO  zookeeper.RecoverableZooKeeper (RecoverableZooKeeper.java:<init>(120)) - Process identifier=catalogtracker-on-hconnection-0x21801b connecting to ZooKeeper ensemble=slave1:2181
2014-11-11 14:09:00,683 INFO  zookeeper.ClientCnxn (ClientCnxn.java:logStartConnect(966)) - Opening socket connection to server slave1/192.168.126.135:2181. Will not attempt to authenticate using SASL (unknown error)
2014-11-11 14:09:00,684 INFO  zookeeper.ClientCnxn (ClientCnxn.java:primeConnection(849)) - Socket connection established to slave1/192.168.126.135:2181, initiating session
2014-11-11 14:09:00,686 INFO  zookeeper.ClientCnxn (ClientCnxn.java:onConnected(1207)) - Session establishment complete on server slave1/192.168.126.135:2181, sessionid = 0x1499d5df1d6002e, negotiated timeout = 90000
2014-11-11 14:09:00,711 INFO  Configuration.deprecation (Configuration.java:warnOnceIfDeprecated(840)) - hadoop.native.lib is deprecated. Instead, use io.native.lib.available
2014-11-11 14:09:01,078 INFO  zookeeper.ZooKeeper (ZooKeeper.java:close(684)) - Session: 0x1499d5df1d6002e closed
2014-11-11 14:09:01,078 INFO  zookeeper.ClientCnxn (ClientCnxn.java:run(509)) - EventThread shut down
2014-11-11 14:09:01,248 INFO  zookeeper.ZooKeeper (ZooKeeper.java:<init>(438)) - Initiating client connection, connectString=slave1:2181 sessionTimeout=90000 watcher=catalogtracker-on-hconnection-0x21801b
2014-11-11 14:09:01,250 INFO  zookeeper.RecoverableZooKeeper (RecoverableZooKeeper.java:<init>(120)) - Process identifier=catalogtracker-on-hconnection-0x21801b connecting to ZooKeeper ensemble=slave1:2181
2014-11-11 14:09:01,251 INFO  zookeeper.ClientCnxn (ClientCnxn.java:logStartConnect(966)) - Opening socket connection to server slave1/192.168.126.135:2181. Will not attempt to authenticate using SASL (unknown error)
2014-11-11 14:09:01,252 INFO  zookeeper.ClientCnxn (ClientCnxn.java:primeConnection(849)) - Socket connection established to slave1/192.168.126.135:2181, initiating session
2014-11-11 14:09:01,254 INFO  zookeeper.ClientCnxn (ClientCnxn.java:onConnected(1207)) - Session establishment complete on server slave1/192.168.126.135:2181, sessionid = 0x1499d5df1d6002f, negotiated timeout = 90000
2014-11-11 14:09:01,263 INFO  zookeeper.ZooKeeper (ZooKeeper.java:close(684)) - Session: 0x1499d5df1d6002f closed
2014-11-11 14:09:01,263 INFO  zookeeper.ClientCnxn (ClientCnxn.java:run(509)) - EventThread shut down
创建表成功
获取一条数据
Row Name: tht Timestamp: 1415686141316 column Family: course Row Name:  china Value: 97 
Row Name: tht Timestamp: 1415686141343 column Family: course Row Name:  english Value: 85 
Row Name: tht Timestamp: 1415686141340 column Family: course Row Name:  math Value: 128 
Row Name: tht Timestamp: 1415686141303 column Family: info Row Name:  age Value: 20 
Row Name: tht Timestamp: 1415686141313 column Family: info Row Name:  sex Value: boy 
获取所有数据
Row Name: qingqing Timestamp: 1415686141375 column Family: course Row Name:  china Value: 100 
Row Name: qingqing Timestamp: 1415686141381 column Family: course Row Name:  english Value: 99 
Row Name: qingqing Timestamp: 1415686141378 column Family: course Row Name:  math Value: 100 
Row Name: qingqing Timestamp: 1415686141362 column Family: info Row Name:  age Value: 18 
Row Name: qingqing Timestamp: 1415686141365 column Family: info Row Name:  sex Value: girl 
Row Name: tht Timestamp: 1415686141316 column Family: course Row Name:  china Value: 97 
Row Name: tht Timestamp: 1415686141343 column Family: course Row Name:  english Value: 85 
Row Name: tht Timestamp: 1415686141340 column Family: course Row Name:  math Value: 128 
Row Name: tht Timestamp: 1415686141303 column Family: info Row Name:  age Value: 20 
Row Name: tht Timestamp: 1415686141313 column Family: info Row Name:  sex Value: boy 
Row Name: xiaoxue Timestamp: 1415686141353 column Family: course Row Name:  china Value: 90 
Row Name: xiaoxue Timestamp: 1415686141359 column Family: course Row Name:  english Value: 90 
Row Name: xiaoxue Timestamp: 1415686141355 column Family: course Row Name:  math Value: 120 
Row Name: xiaoxue Timestamp: 1415686141347 column Family: info Row Name:  age Value: 19 
Row Name: xiaoxue Timestamp: 1415686141350 column Family: info Row Name:  sex Value: boy 
删除一条数据
Row Name: qingqing Timestamp: 1415686141375 column Family: course Row Name:  china Value: 100 
Row Name: qingqing Timestamp: 1415686141381 column Family: course Row Name:  english Value: 99 
Row Name: qingqing Timestamp: 1415686141378 column Family: course Row Name:  math Value: 100 
Row Name: qingqing Timestamp: 1415686141362 column Family: info Row Name:  age Value: 18 
Row Name: qingqing Timestamp: 1415686141365 column Family: info Row Name:  sex Value: girl 
Row Name: xiaoxue Timestamp: 1415686141353 column Family: course Row Name:  china Value: 90 
Row Name: xiaoxue Timestamp: 1415686141359 column Family: course Row Name:  english Value: 90 
Row Name: xiaoxue Timestamp: 1415686141355 column Family: course Row Name:  math Value: 120 
Row Name: xiaoxue Timestamp: 1415686141347 column Family: info Row Name:  age Value: 19 
Row Name: xiaoxue Timestamp: 1415686141350 column Family: info Row Name:  sex Value: boy 
删除多条数据
删除数据库
2014-11-11 14:09:01,449 INFO  zookeeper.ZooKeeper (ZooKeeper.java:<init>(438)) - Initiating client connection, connectString=slave1:2181 sessionTimeout=90000 watcher=catalogtracker-on-hconnection-0x21801b
2014-11-11 14:09:01,451 INFO  zookeeper.RecoverableZooKeeper (RecoverableZooKeeper.java:<init>(120)) - Process identifier=catalogtracker-on-hconnection-0x21801b connecting to ZooKeeper ensemble=slave1:2181
2014-11-11 14:09:01,452 INFO  zookeeper.ClientCnxn (ClientCnxn.java:logStartConnect(966)) - Opening socket connection to server slave1/192.168.126.135:2181. Will not attempt to authenticate using SASL (unknown error)
2014-11-11 14:09:01,452 INFO  zookeeper.ClientCnxn (ClientCnxn.java:primeConnection(849)) - Socket connection established to slave1/192.168.126.135:2181, initiating session
2014-11-11 14:09:01,454 INFO  zookeeper.ClientCnxn (ClientCnxn.java:onConnected(1207)) - Session establishment complete on server slave1/192.168.126.135:2181, sessionid = 0x1499d5df1d60030, negotiated timeout = 90000
2014-11-11 14:09:01,459 INFO  zookeeper.ZooKeeper (ZooKeeper.java:close(684)) - Session: 0x1499d5df1d60030 closed
2014-11-11 14:09:01,459 INFO  zookeeper.ClientCnxn (ClientCnxn.java:run(509)) - EventThread shut down
2014-11-11 14:09:01,460 INFO  client.HBaseAdmin (HBaseAdmin.java:call(908)) - Started disable of users
2014-11-11 14:09:01,479 INFO  zookeeper.ZooKeeper (ZooKeeper.java:<init>(438)) - Initiating client connection, connectString=slave1:2181 sessionTimeout=90000 watcher=catalogtracker-on-hconnection-0x21801b
2014-11-11 14:09:01,481 INFO  zookeeper.RecoverableZooKeeper (RecoverableZooKeeper.java:<init>(120)) - Process identifier=catalogtracker-on-hconnection-0x21801b connecting to ZooKeeper ensemble=slave1:2181
2014-11-11 14:09:01,481 INFO  zookeeper.ClientCnxn (ClientCnxn.java:logStartConnect(966)) - Opening socket connection to server slave1/192.168.126.135:2181. Will not attempt to authenticate using SASL (unknown error)
2014-11-11 14:09:01,482 INFO  zookeeper.ClientCnxn (ClientCnxn.java:primeConnection(849)) - Socket connection established to slave1/192.168.126.135:2181, initiating session
2014-11-11 14:09:01,486 INFO  zookeeper.ClientCnxn (ClientCnxn.java:onConnected(1207)) - Session establishment complete on server slave1/192.168.126.135:2181, sessionid = 0x1499d5df1d60031, negotiated timeout = 90000
2014-11-11 14:09:01,500 INFO  zookeeper.ZooKeeper (ZooKeeper.java:close(684)) - Session: 0x1499d5df1d60031 closed
2014-11-11 14:09:01,500 INFO  zookeeper.ClientCnxn (ClientCnxn.java:run(509)) - EventThread shut down
2014-11-11 14:09:01,601 INFO  zookeeper.ZooKeeper (ZooKeeper.java:<init>(438)) - Initiating client connection, connectString=slave1:2181 sessionTimeout=90000 watcher=catalogtracker-on-hconnection-0x21801b
2014-11-11 14:09:01,603 INFO  zookeeper.RecoverableZooKeeper (RecoverableZooKeeper.java:<init>(120)) - Process identifier=catalogtracker-on-hconnection-0x21801b connecting to ZooKeeper ensemble=slave1:2181
2014-11-11 14:09:01,604 INFO  zookeeper.ClientCnxn (ClientCnxn.java:logStartConnect(966)) - Opening socket connection to server slave1/192.168.126.135:2181. Will not attempt to authenticate using SASL (unknown error)
2014-11-11 14:09:01,604 INFO  zookeeper.ClientCnxn (ClientCnxn.java:primeConnection(849)) - Socket connection established to slave1/192.168.126.135:2181, initiating session
2014-11-11 14:09:01,606 INFO  zookeeper.ClientCnxn (ClientCnxn.java:onConnected(1207)) - Session establishment complete on server slave1/192.168.126.135:2181, sessionid = 0x1499d5df1d60032, negotiated timeout = 90000
2014-11-11 14:09:01,614 INFO  zookeeper.ZooKeeper (ZooKeeper.java:close(684)) - Session: 0x1499d5df1d60032 closed
2014-11-11 14:09:01,614 INFO  zookeeper.ClientCnxn (ClientCnxn.java:run(509)) - EventThread shut down
2014-11-11 14:09:01,816 INFO  zookeeper.ZooKeeper (ZooKeeper.java:<init>(438)) - Initiating client connection, connectString=slave1:2181 sessionTimeout=90000 watcher=catalogtracker-on-hconnection-0x21801b
2014-11-11 14:09:01,823 INFO  zookeeper.RecoverableZooKeeper (RecoverableZooKeeper.java:<init>(120)) - Process identifier=catalogtracker-on-hconnection-0x21801b connecting to ZooKeeper ensemble=slave1:2181
2014-11-11 14:09:01,828 INFO  zookeeper.ClientCnxn (ClientCnxn.java:logStartConnect(966)) - Opening socket connection to server slave1/192.168.126.135:2181. Will not attempt to authenticate using SASL (unknown error)
2014-11-11 14:09:01,831 INFO  zookeeper.ClientCnxn (ClientCnxn.java:primeConnection(849)) - Socket connection established to slave1/192.168.126.135:2181, initiating session
2014-11-11 14:09:01,837 INFO  zookeeper.ClientCnxn (ClientCnxn.java:onConnected(1207)) - Session establishment complete on server slave1/192.168.126.135:2181, sessionid = 0x1499d5df1d60033, negotiated timeout = 90000
2014-11-11 14:09:01,856 INFO  zookeeper.ZooKeeper (ZooKeeper.java:close(684)) - Session: 0x1499d5df1d60033 closed
2014-11-11 14:09:01,856 INFO  zookeeper.ClientCnxn (ClientCnxn.java:run(509)) - EventThread shut down
2014-11-11 14:09:02,157 INFO  zookeeper.ZooKeeper (ZooKeeper.java:<init>(438)) - Initiating client connection, connectString=slave1:2181 sessionTimeout=90000 watcher=catalogtracker-on-hconnection-0x21801b
2014-11-11 14:09:02,161 INFO  zookeeper.RecoverableZooKeeper (RecoverableZooKeeper.java:<init>(120)) - Process identifier=catalogtracker-on-hconnection-0x21801b connecting to ZooKeeper ensemble=slave1:2181
2014-11-11 14:09:02,163 INFO  zookeeper.ClientCnxn (ClientCnxn.java:logStartConnect(966)) - Opening socket connection to server slave1/192.168.126.135:2181. Will not attempt to authenticate using SASL (unknown error)
2014-11-11 14:09:02,164 INFO  zookeeper.ClientCnxn (ClientCnxn.java:primeConnection(849)) - Socket connection established to slave1/192.168.126.135:2181, initiating session
2014-11-11 14:09:02,168 INFO  zookeeper.ClientCnxn (ClientCnxn.java:onConnected(1207)) - Session establishment complete on server slave1/192.168.126.135:2181, sessionid = 0x1499d5df1d60034, negotiated timeout = 90000
2014-11-11 14:09:02,185 INFO  zookeeper.ZooKeeper (ZooKeeper.java:close(684)) - Session: 0x1499d5df1d60034 closed
2014-11-11 14:09:02,185 INFO  zookeeper.ClientCnxn (ClientCnxn.java:run(509)) - EventThread shut down
2014-11-11 14:09:02,686 INFO  zookeeper.ZooKeeper (ZooKeeper.java:<init>(438)) - Initiating client connection, connectString=slave1:2181 sessionTimeout=90000 watcher=catalogtracker-on-hconnection-0x21801b
2014-11-11 14:09:02,691 INFO  zookeeper.RecoverableZooKeeper (RecoverableZooKeeper.java:<init>(120)) - Process identifier=catalogtracker-on-hconnection-0x21801b connecting to ZooKeeper ensemble=slave1:2181
2014-11-11 14:09:02,691 INFO  zookeeper.ClientCnxn (ClientCnxn.java:logStartConnect(966)) - Opening socket connection to server slave1/192.168.126.135:2181. Will not attempt to authenticate using SASL (unknown error)
2014-11-11 14:09:02,693 INFO  zookeeper.ClientCnxn (ClientCnxn.java:primeConnection(849)) - Socket connection established to slave1/192.168.126.135:2181, initiating session
2014-11-11 14:09:02,696 INFO  zookeeper.ClientCnxn (ClientCnxn.java:onConnected(1207)) - Session establishment complete on server slave1/192.168.126.135:2181, sessionid = 0x1499d5df1d60035, negotiated timeout = 90000
2014-11-11 14:09:02,721 INFO  zookeeper.ZooKeeper (ZooKeeper.java:close(684)) - Session: 0x1499d5df1d60035 closed
2014-11-11 14:09:02,722 INFO  zookeeper.ClientCnxn (ClientCnxn.java:run(509)) - EventThread shut down
2014-11-11 14:09:02,723 INFO  client.HBaseAdmin (HBaseAdmin.java:disableTable(963)) - Disabled users
2014-11-11 14:09:02,874 INFO  client.HBaseAdmin (HBaseAdmin.java:deleteTable(695)) - Deleted users
删除表成功

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没报什么错误，只有一个没有找到hadoop本地库的警告

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 关于新建表时的新API操作TableName.valueOf(tablename);我看了一下TableName的源码

/**
   * @throws IllegalArgumentException if fullName equals old root or old meta. Some code
   *  depends on this.
   */
  public static TableName valueOf(String name) {
    for (TableName tn : tableCache) {
      if (name.equals(tn.getNameAsString())) {
        return tn;
      }
    }

    int namespaceDelimIndex = name.indexOf(NAMESPACE_DELIM);
    byte[] nameB = Bytes.toBytes(name);

    if (namespaceDelimIndex < 0) {
      return createTableNameIfNecessary(
          ByteBuffer.wrap(NamespaceDescriptor.DEFAULT_NAMESPACE_NAME),
          ByteBuffer.wrap(nameB));
    } else {
      return createTableNameIfNecessary(
          ByteBuffer.wrap(nameB, 0, namespaceDelimIndex),
          ByteBuffer.wrap(nameB, namespaceDelimIndex + 1,
              nameB.length - (namespaceDelimIndex + 1)));
    }
  }

valueOf是它的一个静态方法。注释我看不太懂，看代码可以看出多了两个判断，一个判断它是否已经在表缓存中了，一个是判断它的前缀问题，如果有就去掉。我不知道第二个具体有什么作用。

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 更详细的可以参考：http://www.aboutyun.com/thread-10989-1-1.html

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