# Handling vast (milions) number of results in Aggregations

**URL:** <https://discuss.elastic.co/t/handling-vast-milions-number-of-results-in-aggregations/22457>\
**Category:** Elasticsearch\
**Created:** [March 1, 2015, 4:39pm UTC](https://discuss.elastic.co/t/handling-vast-milions-number-of-results-in-aggregations/22457 "2015-03-01T16:39:20Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Sharon\_Abu](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/sharon_abu/32/47792_2.png) [@Sharon\_Abu](https://discuss.elastic.co/u/Sharon_Abu)\
**Post date:** [March 1, 2015, 4:39pm UTC](https://discuss.elastic.co/t/handling-vast-milions-number-of-results-in-aggregations/22457/1 "2015-03-01T16:39:20Z")

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Hello All,

I have a situation where I have an aggregation that counts something and  
groups by per device(mobile), so that means the aggregations results can  
get to 100's or 100,000's or event more of results and thus RAM might not  
be sufficient. I tried to look for a solution which I can tell ES to write  
the results to another index instead of RAM, but could not find any way of  
doing so.  
The concept I'm talking about is similar to MongoDB's $out collection  
([http://docs.mongodb.org/manual/reference/operator/aggregation/out/](http://docs.mongodb.org/manual/reference/operator/aggregation/out/)) in  
map/reduce aggregations.

Appreciate any help on that important matter.

Thanks in advance  
Sharon

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [July 6, 2017, 12:29am UTC](https://discuss.elastic.co/t/handling-vast-milions-number-of-results-in-aggregations/22457/2 "2017-07-06T00:29:11Z")

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Closed on July 6, 2017, 12:29am UTC