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From "Lars George (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-4022) Shell reports error on space prefixed colfam name
Date Thu, 23 Jun 2011 21:00:49 GMT
Shell reports error on space prefixed colfam name
-------------------------------------------------

                 Key: HBASE-4022
                 URL: https://issues.apache.org/jira/browse/HBASE-4022
             Project: HBase
          Issue Type: Bug
            Reporter: Lars George
            Priority: Minor


See this test:

{noformat}
hbase(main):002:0> create 'test', ' cf'

hbase(main):003:0> scan 'test'
ROW                                           COLUMN+CELL                                
                                                                                        
0 row(s) in 0.1050 seconds

hbase(main):004:0> describe 'test'
DESCRIPTION                                                                              
                         ENABLED                                                        
{NAME => 'test', FAMILIES => [{NAME => ' cf', BLOOMFILTER => 'NONE', REPLICATION_SCOPE
=> '0', COMPRESSION => 'NO true                                                    
      
NE', VERSIONS => '3', TTL => '2147483647', BLOCKSIZE => '65536', IN_MEMORY =>
'false', BLOCKCACHE => 'true'}]}                                                      
            
1 row(s) in 0.0540 seconds

hbase(main):005:0> put 'test', 'r1', ' cf:1', 'v1'
0 row(s) in 0.0580 seconds

hbase(main):006:0> scan 'test', { COLUMNS => [' cf'] }
ROW                                           COLUMN+CELL                                
                                                                                        

ERROR: Unknown column family! Valid column names:  cf

Here is some help for this command:
Scan a table; pass table name and optionally a dictionary of scanner
specifications.  Scanner specifications may include one or more of:
TIMERANGE, FILTER, LIMIT, STARTROW, STOPROW, TIMESTAMP, MAXLENGTH,
or COLUMNS. If no columns are specified, all columns will be scanned.
To scan all members of a column family, leave the qualifier empty as in
'col_family:'.

Some examples:

 hbase> scan '.META.'
 hbase> scan '.META.', {COLUMNS => 'info:regioninfo'}
 hbase> scan 't1', {COLUMNS => ['c1', 'c2'], LIMIT => 10, STARTROW => 'xyz'}
 hbase> scan 't1', {FILTER => org.apache.hadoop.hbase.filter.ColumnPaginationFilter.new(1,
0)}
 hbase> scan 't1', {COLUMNS => 'c1', TIMERANGE => [1303668804, 1303668904]}

For experts, there is an additional option -- CACHE_BLOCKS -- which
switches block caching for the scanner on (true) or off (false).  By
default it is enabled.  Examples:

 hbase> scan 't1', {COLUMNS => ['c1', 'c2'], CACHE_BLOCKS => false}
8:57 PM
haha
8:58 PM
hbase(main):008:0> scan 'test'                          
ROW                                           COLUMN+CELL                                
                                                                                        
r1                                           column= cf:1, timestamp=1308855379447, value=v1
                                                                                    
1 row(s) in 0.0450 seconds
{noformat}

We should handle this better.

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