hbase(main):036:0> get 'ddl', 'example', 'info:age'
COLUMN CELL
info:age timestamp=1436787562408, value=\x00\x00\x00\x00\x00\x00\x00\x03
1 row(s) in 0.0160 seconds
hbase(main):037:0> get_counter 'ddl', 'example', 'info:age'
ERROR: wrong number of arguments (3 for 4)
Here is some help for this command:
Return a counter cell value at specified table/row/column coordinates.
A cell cell should be managed with atomic increment function oh HBase
and the data should be binary encoded. Example:
hbase> get_counter 'ns1:t1', 'r1', 'c1'
hbase> get_counter 't1', 'r1', 'c1'
The same commands also can be run on a table reference. Suppose you had a reference
t to table 't1', the corresponding command would be:
hbase> t.get_counter 'r1', 'c1'
hbase(main):041:0> get_counter 'ddl', 'example', 'info:age', 'dummy' <----加上dummy就對了
COUNTER VALUE = 3
hbase(main):042:0> get 'ddl', 'example', 'info:age'
COLUMN CELL
info:age timestamp=1436787562408, value=\x00\x00\x00\x00\x00\x00\x00\x03
1 row(s) in 0.0210 seconds
hbase(main):043:0> truncate 'ddl'
Truncating 'ddl' table (it may take a while):
- Disabling table...
- Dropping table...
- Creating table...
0 row(s) in 2.6630 seconds
hbase(main):044:0>