Unique Count in aggregations


(Konstantinos Zacharakis) #1

Hello,

I would like to ask about the support of unique terms in aggregations.
Shay had mentioned in the issue #1044https://github.com/elasticsearch/elasticsearch/issues/1044 that
once the aggregation framework is done you plan to add this new feature?
Since aggregations are here since Beta2, how close in your roadmap is the
unique terms support? Should we expect that in 1.0.0 Release?

Kind Regards
Kostas

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(vaidik) #2

Haven't tried the aggregations module. But if what you want are unique
terms, I think you can do that using Term Facets as well. Also, in case you
use Terms Facet, you will have to select such a size that will ensure that
ES returns all the terms and does not discard some when size is lesser than
the number of unique terms.

Vaidik Kapoor
vaidikkapoor.info

On 8 January 2014 14:41, Konstantinos Zacharakis kzachara@gmail.com wrote:

Hello,

I would like to ask about the support of unique terms in aggregations.
Shay had mentioned in the issue #1044https://github.com/elasticsearch/elasticsearch/issues/1044 that
once the aggregation framework is done you plan to add this new feature?
Since aggregations are here since Beta2, how close in your roadmap is the
unique terms support? Should we expect that in 1.0.0 Release?

Kind Regards
Kostas

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(Konstantinos Zacharakis) #3

Hi Vaidik,

This method is fine when the term cardinality is low and can be also
achieved using the aggregations framework.
However when cardinality is high, the memory footprint will be also high
and for sure not so safe.

On Wednesday, 8 January 2014 11:15:22 UTC+2, Vaidik Kapoor wrote:

Haven't tried the aggregations module. But if what you want are unique
terms, I think you can do that using Term Facets as well. Also, in case you
use Terms Facet, you will have to select such a size that will ensure that
ES returns all the terms and does not discard some when size is lesser than
the number of unique terms.

Vaidik Kapoor
vaidikkapoor.info

On 8 January 2014 14:41, Konstantinos Zacharakis <kzac...@gmail.com<javascript:>

wrote:

Hello,

I would like to ask about the support of unique terms in aggregations.
Shay had mentioned in the issue #1044https://github.com/elasticsearch/elasticsearch/issues/1044 that
once the aggregation framework is done you plan to add this new feature?
Since aggregations are here since Beta2, how close in your roadmap is the
unique terms support? Should we expect that in 1.0.0 Release?

Kind Regards
Kostas

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(system) #4