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From Billie J Rinaldi <billie.j.rina...@ugov.gov>
Subject Re: Group by ColumnFamily?
Date Fri, 18 May 2012 13:13:19 GMT
On Friday, May 18, 2012 8:58:32 AM, "David Medinets" <david.medinets@gmail.com> wrote:
> As I reread my message, I feel that I did not provide enough
> background.
> 
> I am using the SummingCombiner to sum metrics. This step provides
> essentially facet counts about my data:
> 
> ROWID ACTION RUNNING 5
> ROWID ACTION WALKING 33
> ROWID ACTION DRINKING 45
> 
> This works great. My next concern is to count the number of unique
> actions.

No, there is no existing iterator that will accomplish this.  We do have a ticket open, but
it it currently unassigned.
https://issues.apache.org/jira/browse/ACCUMULO-394

Billie

> 
> On Fri, May 18, 2012 at 7:45 AM, David Medinets
> <david.medinets@gmail.com> wrote:
> > Just in case this functionality exists and I have missed it.
> >
> > Is there a feature where I can group on ColumnFamily to count the
> > number of different ColumnQualifiers?

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