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From Michael Segel <michael_se...@hotmail.com>
Subject Re: Changing column family in hbase
Date Wed, 28 Nov 2012 12:10:58 GMT
Not really a good design or a use of column families. 

I would strongly suggest that you rethink your schema.

On Nov 28, 2012, at 5:04 AM, raviprasad.t@polarisFT.com wrote:

> Hi Mohammad,
>  Our requirement is that,
>  Initially we have created a table 'emp'  with the below detail in single column family
(cfemp )
>    cfemp:eno
>    cfemp:ename
>    cfemp:address
> 
> After that we have added two columns  in the table  (  address2, address3 and  city),
>  We plan to create a new coloum family called  'cfadd'  to store all the address details
as below
>     cfemp:eno
>     cfemp:ename
>     cfadd:address   -- Previously it was in cfemp column family
>     cfadd:address2
>     cfadd:address3
>     cfadd:city
> 
> Regards,
> Ravi
> 
> -----Mohammad Tariq <dontariq@gmail.com> wrote: -----
> To: "user@hbase.apache.org" <user@hbase.apache.org>
> From: Mohammad Tariq <dontariq@gmail.com>
> Date: 11/28/2012 02:39PM
> Subject: Re: Changing column family in hbase
> 
> Hello Ravi,
> 
>    Short answer, no. We don't have a way to achieve this. At lest I am not
> aware of any. (Please share with us if you are able to achieve this.)
> 
> But, just out of curiosity, I would like to ask you, why would you want to
> do that? I mean I don't see any fundamental difference between both the
> schemata.
> 
> Regards,
>    Mohammad Tariq
> 
> 
> 
> On Wed, Nov 28, 2012 at 2:28 PM, <raviprasad.t@polarisft.com> wrote:
> 
>> Hi,
>>  We need to change columns of Hbase table from one column family to
>> another column family .
>> 
>> Example :-
>>    HBase table Name :-  emp
>> 
>>    Column family :-  cf1
>>        Under the column family cf1, we have the following columns
>>                      cf1: no
>>                      cf1:name
>>                      cf1:salary
>>                      cf1: job
>> 
>> We have created another column family called  'cf2'  in the same table
>> 'emp'
>> 
>> How to replace Column family cf1's   columns to another column family
>> 'cf2' like below ?
>> 
>>                      cf2: no
>>                       cf2:name
>>                       cf2:salary
>>                       cf2: job
>> 
>> Regards
>> Ravi
>> 
>> 
>> 
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>> 
> 
> 
> This e-Mail may contain proprietary and confidential information and is sent for the
intended recipient(s) only.  If by an addressing or transmission error this mail has been
misdirected to you, you are requested to delete this mail immediately. You are also hereby
notified that any use, any form of reproduction, dissemination, copying, disclosure, modification,
distribution and/or publication of this e-mail message, contents or its attachment other than
by its intended recipient/s is strictly prohibited.
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