HBase综合测试（头歌实践教学项目）

HBase综合测试

第一关：HBase-shell命令

在命令行依次输入以下命令：

start-hbase.sh

hbase shell

create 'exam_tb1',  {NAME=>'user_info'},{NAME=>'class_info'}

put 'exam_tb1','row-1','user_info:name','jack'
put 'exam_tb1','row-1','user_info:age','32'
put 'exam_tb1','row-1','class_info:class_name','software'
put 'exam_tb1','row-1','class_info:class_id','201801'

put 'exam_tb1','row-2','user_info:name','rose'
put 'exam_tb1','row-2','user_info:age','28'
put 'exam_tb1','row-2','class_info:class_name','hardware'
put 'exam_tb1','row-2','class_info:class_id','201802'

第2关：HBase Java API

	/********* Begin *********/
	Configuration conf = HBaseConfiguration.create(); //使用create()静态方法就可以得到Configuration对象
	Connection conn = ConnectionFactory.createConnection(conf); //config为前文的配置对象
	Admin admin = conn.getAdmin(); //使用连接对象获取Admin对象
	TableName tableName = TableName.valueOf("emp_tb1");//定义表名
	HTableDescriptor htd = new HTableDescriptor(tableName);//定义表对象
	HColumnDescriptor hcd1 = new HColumnDescriptor("emp_info");//定义列族对象
    HColumnDescriptor hcd2 = new HColumnDescriptor("dept_info");//定义列族对象
	htd.addFamily(hcd1); //添加
    htd.addFamily(hcd2); //添加
	admin.createTable(htd);//创建表
	
    // 停用表
	admin.disableTable(TableName.valueOf("step2_tb0"));
    // 停用表
	admin.disableTable(TableName.valueOf("step2_tb1"));
	// 删除表
	admin.deleteTable(TableName.valueOf("step2_tb1"));

	// 获取一个操作指定表的table对象,进行DML操作
	Table table = conn.getTable(TableName.valueOf("emp_tb1"));
	
	// 构造要插入的数据为一个Put类型(一个put对象只能对应一个rowkey)的对象
	Put put = new Put(Bytes.toBytes("201101"));
	put.addColumn(Bytes.toBytes("emp_info"), Bytes.toBytes("emp_name"), Bytes.toBytes("lucy"));
	put.addColumn(Bytes.toBytes(