第3章 HBaseShell常用操作

HBaseShell常用操作第3章学习目标1.掌握HBaseShell操作HBaseContents目录HBaseShell操作13HBaseShell操作进入HBase客户端命令行hbaseshell0．创建表(create'表名','列族')(HBase建表时必须加上表名和列族名)hbase(main):001:0>create'test','info'3HBaseShell操作1．查看表(list)hbase(main):002:0>list3HBaseShell操作2．插入数据到表(put'表名','rowkey','列族:列名','数据')

hbase(main):003:0>put'test','1001','info:name',jhon'hbase(main):004:0>put'test','1001','info:age','18'hbase(main):005:0>put'test','1002','info:name','Janna'3HBaseShell操作3、查看“指定行”或“指定列族:列”的数据(get'表名','rowkey')(get'表名','rowkey','列族:列')hbase(main):006:0>get'test','1001'hbase(main):007:0>get'test','1001','info:name'3HBaseShell操作4．查看表结构(describe)hbase(main):008:0>describe'test'3HBaseShell操作5．修改列族(alter)//修改列族信息，将最大时间戳版本设为3hbase(main):009:0>alter'test',{NAME=>'info',VERSIONS=>3}//添加列族info2hbase(main):010:0>alter'test','info2’//删除列族info2hbase(main):012:0>alter'table','delete'=>'cf2'3HBaseShell操作6．更新指定字段的数据并查看(put'表名','rowkey','列族:列名','数据')hbase(main):013:0>put'test','1001','info:name','nick'hbase(main):014:0>put'test','1001','info:age','22'hbase(main):016:0>get'test','1001',{COLUMN=>'info:name',VERSIONS=>3}展示出来的历史时间戳版本数据3HBaseShell操作7．扫描查看表数据(scan)//扫描整张表hbase(main):018:0>scan'test'//指定rowkey范围扫描表hbase(main):019:0>scan'test',{STARTROW=>'1001',STOPROW=>'1001'}hbase(main):020:0>scan'test',{STARTROW=>'1001'}3HBaseShell操作8．统计表数据行数(count)hbase(main):021:0>count'test'3HBaseShell操作9．删除数据(deleteall，delete)(实际上数据依然存在，只是标记不可见，会被定时清理）//删除某rowkey的全部数据：hbase(main):022:0>deleteall'test','1001’//删除某rowkey的某一条数据：hbase(main):023:0>delete'test','1002','info:name'3HBaseShell操作10．清空表数据(truncate)hbase(main):025:0>truncate'test'3HBaseShell操作11．禁用、启用、删除表(disable,enable,exists,drop)(想要删除表，需要先禁用表)//禁用表hbase(main):030:0>disable'test’//启用表hbase(main):031:0>enable'test’//查询表是否存在hbase(main):032:0>exists'test'3H