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From 马超 <hossc...@gmail.com>
Subject Re: Can column type be changed dynamically?
Date Fri, 27 Apr 2012 16:54:35 GMT
After I update the column type:

*update column family User with column_metadata = [{column_name : 77,
validation_class : Int32Type}];*

I can't list the data in User column family:

*list User;*
*
*
*RowKey: 1234*
*A int is exactly 4 bytes: 2*

Any ideas for this?

Thanks,

2012/4/27 马超 <hosschao@gmail.com>

> Thanks a lot!
> I will go ahead~
>
>
> 2012/4/27 Sylvain Lebresne <sylvain@datastax.com>
>
>> On Fri, Apr 27, 2012 at 5:26 PM, 马超 <hosschao@gmail.com> wrote:
>> > Hi all,
>> >
>> > I want to change one of my column type from IntegerType to Int32Type
>> > dynamically. I'm sure all datas in that column are int32 type indeed.
>> So I
>> > want changing the column type by:
>> >
>> > update column family XXX with column_metadata = [{column_name : 'xxx',
>> > validation_class : Int32Type}];
>> >
>> > Is there any harm to do this?
>>
>> There isn't (as long as you're right to be sure of course).
>>
>> --
>> Sylvain
>>
>
>

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