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From: Jonathan Ellis <jbellis@gmail.com>
Date: Sat, 22 May 2010 04:51:15 -0700
Message-ID: <AANLkTikcW1R0HHCXDx8FXOpSIlBXwRCoJvsF19_8Cl_6@mail.gmail.com>
Subject: Re: super column
To: user@cassandra.apache.org
Cc: dev@cassandra.apache.org
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(a) No

(b) you should restrict it to < 2GB of data in 0.6

On Sat, May 22, 2010 at 3:55 AM, huajun qi <qihjun@gmail.com> wrote:
> Can the value of a column under a super column be a super column?
>
> For examples:
>
> sc=3D{
> =A0 =A0 =A0 =A0name:"name",
> =A0 =A0 =A0 =A0value:{
> =A0 =A0 =A0 =A0 =A0 =A0{name:"First Name", value:"John"}
> =A0 =A0 =A0 =A0 =A0 =A0{name:"Last Name", value:"LBJ"}
> =A0 =A0 =A0 }
> }
>
> this is a super column above, can I add a super column below to it's valu=
e?
>
> info=3D{name:"info",
> =A0 =A0 =A0 value:{
> =A0 =A0 "age":"20",
> =A0 =A0"gender":"M"
> }
> }
>
> Can I add the super column to the top one to make this:
>
> sc=3D{
> =A0 =A0 =A0 =A0name:"name",
> =A0 =A0 =A0 =A0value:{
> =A0 =A0 =A0 =A0 =A0 =A0{name:"First Name", value:"John"}
> =A0 =A0 =A0 =A0 =A0 =A0{name:"Last Name", value:"LBJ"}
> =A0 =A0 =A0 =A0 =A0 =A0{name:"info",value:{name:"info",
> =A0 =A0 =A0 value:{
> =A0 =A0 "age":"20",
> =A0 =A0"gender":"M"
> }
> }}
> =A0 =A0 =A0 }
> }
>
>
> And I have another question: should I restrict the number of columns in a
> row?
>
> --
> Location:
>



--=20
Jonathan Ellis
Project Chair, Apache Cassandra
co-founder of Riptano, the source for professional Cassandra support
http://riptano.com