# Composite Aggregation without "size" parameter

**URL:** <https://discuss.elastic.co/t/composite-aggregation-without-size-parameter/195845>\
**Category:** Elasticsearch\
**Created:** [August 20, 2019, 5:12am UTC](https://discuss.elastic.co/t/composite-aggregation-without-size-parameter/195845 "2019-08-20T05:12:28Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![lightning](https://avatars.discourse-cdn.com/v4/letter/l/5f8ce5/32.png) [@lightning](https://discuss.elastic.co/u/lightning)\
**Post date:** [August 20, 2019, 5:12am UTC](https://discuss.elastic.co/t/composite-aggregation-without-size-parameter/195845/1 "2019-08-20T05:12:28Z")

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What exactly will happen if we don't use the "size" parameter when using composite aggregation?  
Will it aggregate all records? if yes, how does this is different compared to terms aggregation?

Thank you for your answer.

Regards,  
Lightning

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [September 17, 2019, 5:12am UTC](https://discuss.elastic.co/t/composite-aggregation-without-size-parameter/195845/2 "2019-09-17T05:12:28Z")

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