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Posted to dev@kylin.apache.org by dong wang <el...@gmail.com> on 2015/02/04 10:23:50 UTC
some questions about Kylin usage
1, when creating a cube and reach the "Refresh Setting" step, the default
"Partition Type" is "Append" with the tips "Leave as default if the cube
always needs full build" on the right page, is it correct? and what's the
difference between "Append" and "Update_Insert" for the "Partition type"?
2, could anyone please give me more examples about "aggregation groups"
setting?
Re: some questions about Kylin usage
Posted by Li Yang <li...@apache.org>.
Find GIT_REPO/examples for some sample cubes. Briefly "aggregation group"
is a way to build partial cubes.
By default, a 4-dimension full cube (A, B, C, D) will generates 16 cuboids,
the combination of all 4 dimensions. But you can specify smaller
aggregation groups, like (A, B), (C, D), to only generate the combinations
between (A, B) plus the combinations between (C, D), which result 8 cuboids.
Read this if you haven't
http://www.slideshare.net/YangLi43/design-cube-in-apache-kylin
Cheers
Yang
On Thu, Feb 5, 2015 at 11:27 AM, jason zhong <he...@gmail.com> wrote:
> Hi,dong
>
> 'Update_Insert' is deprecated,will not use it in new version.
>
> we only allow APPEND now
>
> On Wed, Feb 4, 2015 at 5:23 PM, dong wang <el...@gmail.com> wrote:
>
> > 1, when creating a cube and reach the "Refresh Setting" step, the default
> > "Partition Type" is "Append" with the tips "Leave as default if the cube
> > always needs full build" on the right page, is it correct? and what's the
> > difference between "Append" and "Update_Insert" for the "Partition type"?
> >
> > 2, could anyone please give me more examples about "aggregation groups"
> > setting?
> >
>
Re: some questions about Kylin usage
Posted by jason zhong <he...@gmail.com>.
Hi,dong
'Update_Insert' is deprecated,will not use it in new version.
we only allow APPEND now
On Wed, Feb 4, 2015 at 5:23 PM, dong wang <el...@gmail.com> wrote:
> 1, when creating a cube and reach the "Refresh Setting" step, the default
> "Partition Type" is "Append" with the tips "Leave as default if the cube
> always needs full build" on the right page, is it correct? and what's the
> difference between "Append" and "Update_Insert" for the "Partition type"?
>
> 2, could anyone please give me more examples about "aggregation groups"
> setting?
>