hbase-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Toby White <t...@scrtplns.com>
Subject Re: column family names
Date Wed, 04 Feb 2009 21:22:30 GMT
Thanks, see HBASE-1184.

Toby

On 4 Feb 2009, at 17:59, stack wrote:

> File an issue and a patch and we'll commit it.  Seems like a  
> reasonable
> expectation for a column family name.
> Thanks Toby,
> St.Ack
>
> On Wed, Feb 4, 2009 at 9:53 AM, Toby White <toby@scrtplns.com> wrote:
>
>> I quite wanted to use a hyphen in the name (so that it could be a  
>> direct
>> mapping to an HTTP header field name), but hbase wouldn't let me.
>> Not massively onerous - it's easy to translate; it's just a slight
>> awkwardness.
>>
>> Toby
>>
>> On 4 Feb 2009, at 17:49, stack wrote:
>>
>> Yeah, the architecture document is starting to showing its age.   
>> Needs a
>>> nip
>>> and tuck.
>>>
>>> No big reasons for family name being 'text'/'printable'.  Is it an  
>>> onerous
>>> restriction?
>>>
>>> St.Ack
>>>
>>>
>>>
>>> On Wed, Feb 4, 2009 at 8:09 AM, Toby White <toby@scrtplns.com>  
>>> wrote:
>>>
>>> From the HBase documentation (
>>>> http://wiki.apache.org/hadoop/Hbase/HbaseArchitecture)
>>>>
>>>> 'A column name has the form "<family>:<label>" where <family>
and  
>>>> <label>
>>>> can be arbitrary byte arrays'
>>>>
>>>> yet in HColumnDescriptor.java:
>>>>
>>>> for (int i = 0; i < (b.length - 1); i++) {
>>>>   if (Character.isLetterOrDigit(b[i]) || b[i] == '_' || b[i] ==  
>>>> '.') {
>>>>     continue;
>>>>   }
>>>>   throw new IllegalArgumentException("Illegal character <" + b[i] +
>>>>     ">. Family names  can only contain  'word characters' and  
>>>> must end"
>>>> +
>>>>     "with a colon: " + Bytes.toString(b));
>>>> }
>>>>
>>>> Presumably the code is the authoritative source here; but why is  
>>>> there
>>>> such
>>>> a restriction on family names?
>>>>
>>>> Toby
>>>>
>>>>
>>


Mime
View raw message