Hi Stack,
Thanks a lot for pointing out, I had overlooked it I went through the
API. My data's no. of versions is highly variable. Basically, I am trying to
use one row for a user's browser session and creating a new version for each
user action (click etc.), storing data like where the user clicked. This
means a row can have just one version, or it can even have thousands of
versions. I am thinking of getting all versions using the time range
option. But is that efficient? And what are the factors to be kept in mind
in this case? Will it be efficient to have some rows with 1 version and some
with 100 versions?
Thanks again,
Hari
On Tue, Dec 7, 2010 at 12:22 PM, Stack <[email protected]> wrote:
> You have to 'Get' all or N versions. See how
>
> http://hbase.apache.org/docs/r0.89.20100924/apidocs/org/apache/hadoop/hbase/client/Scan.html
> and
> http://hbase.apache.org/docs/r0.89.20100924/apidocs/org/apache/hadoop/hbase/client/Get.html
> allow you stipulate how many versions to return (You can also specify
> a TimeRange).
>
> St.Ack
>
>
> On Mon, Dec 6, 2010 at 10:16 PM, Hari Sreekumar
> <[email protected]> wrote:
> > Hi,
> >
> > How is versioning used? I cannot know all the timestamps corresponding
> to
> > each column in my design. But I need to use the older versions of
> columns.
> > How can this be done? Is there a way to output all previous versions of a
> > column/column-family?
> >
> > Hari
> >
>
