HBase练习-3

#查看前3条记录
hbase(main):017:0> scan 't1',{LIMIT=>3}
ROW                    COLUMN+CELL                                                   
 aa                    column=f1:c1, timestamp=1423454345956, value=valueadd         
 r2                    column=f1:c1, timestamp=1423454345922, value=value2           
 row1                  column=f1:c1, timestamp=1423454345987, value=value1

#查看rowkey==aa，的column
hbase(main):018:0> get 't1','aa',{COLUMN=>'f1:c1'}
COLUMN                 CELL                                                          
 f1:c1                 timestamp=1423454345956, value=valueadd

#查看表t1中的记录条数
hbase(main):019:0> count 't1'
5 row(s) in 0.1620 seconds


#删除表t1中的数据
hbase(main):020:0> truncate 't1'
Truncating 't1' table (it may take a while):
 - Disabling table...
 - Truncating table...

#truncate后表中记录为0行
hbase(main):021:0> scan 't1'
ROW                    COLUMN+CELL                                                   
0 row(s) in 0.3250 seconds

#删除表失败
hbase(main):022:0> drop 't1'

ERROR: Table t1 is enabled. Disable it first.
Drop the named table. Table must first be disabled:
  hbase> drop 't1'
  hbase> drop 'ns1:t1'

#删除表之前需要先禁用表
hbase(main):023:0> disable 't1'
0 row(s) in 2.5180 seconds

hbase(main):024:0> drop 't1'
0 row(s) in 1.3670 seconds