# Num\_reduce\_phases in query response

**URL:** <https://discuss.elastic.co/t/num-reduce-phases-in-query-response/308145>\
**Category:** Elasticsearch\
**Created:** [June 25, 2022, 12:43am UTC](https://discuss.elastic.co/t/num-reduce-phases-in-query-response/308145 "2022-06-25T00:43:24Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Akshay\_Pawar](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/akshay_pawar/32/45475_2.png) [@Akshay\_Pawar](https://discuss.elastic.co/u/Akshay_Pawar)\
**Post date:** [June 25, 2022, 12:43am UTC](https://discuss.elastic.co/t/num-reduce-phases-in-query-response/308145/1 "2022-06-25T00:43:24Z")

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Hello, we are using Elasticsearch's version 7.5.1 and noticed that sometimes (not always) Elasticsearch returns "num\_reduced\_phases" in query response for aggregate queries. Is there any specific query/scenario which can add this field in the response?

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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 23, 2022, 12:44am UTC](https://discuss.elastic.co/t/num-reduce-phases-in-query-response/308145/2 "2022-07-23T00:44:00Z")

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