# About the 7.x version of the search.max\_buckets parameter

**URL:** <https://discuss.elastic.co/t/about-the-7-x-version-of-the-search-max-buckets-parameter/260512>\
**Category:** Elasticsearch\
**Created:** [January 8, 2021, 8:23am UTC](https://discuss.elastic.co/t/about-the-7-x-version-of-the-search-max-buckets-parameter/260512 "2021-01-08T08:23:53Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![liwanjie](https://avatars.discourse-cdn.com/v4/letter/l/c4cdca/32.png) [@liwanjie](https://discuss.elastic.co/u/liwanjie)\
**Post date:** [January 8, 2021, 8:23am UTC](https://discuss.elastic.co/t/about-the-7-x-version-of-the-search-max-buckets-parameter/260512/1 "2021-01-08T08:23:53Z")

</div>

I would like to ask if the `check_buckets_step_size` parameter is added in 7.7.0. Has the `max_buckets`parameter been repealed in subsequent releases (including the latest 7.10.0)? If not repealed, are there any defaults?

---

<div class="post-metadata">

**Author:** ![myspacebarisbroken](https://avatars.discourse-cdn.com/v4/letter/m/e9a140/32.png) [@myspacebarisbroken](https://discuss.elastic.co/u/myspacebarisbroken)\
**Post date:** [January 9, 2021, 7:40am UTC](https://discuss.elastic.co/t/about-the-7-x-version-of-the-search-max-buckets-parameter/260512/2 "2021-01-09T07:40:53Z")

</div>

> [@liwanjie](#):
>
> I would like to ask if the `check_buckets_step_size` parameter is added in 7.7.0

According to github/changelogs, `check_buckets_step_size` was included in 7.7.0.

> **[Elasticsearch version 7.7.0 | Elasticsearch Guide \[7.10\] | Elastic](https://www.elastic.co/guide/en/elasticsearch/reference/7.10/release-notes-7.7.0.html)**

> <https://github.com/elastic/elasticsearch/pull/46751>
>
> Bucket aggregation will consume a lot of memory on coordinate node if it has a h…uge number of resulting buckets. \_search.max\_buckets\_ setting could limit maximum number of buckets allowed in a single response. Sometimes user may increase this setting to get more buckets, but it also increases the risk of OOM. It's hard to evaluate a suitable value for \_max\_buckets\_.
> 
> With this PR, we introduced search.check\_buckets\_step\_size setting. Whenever allocating \_search.check\_buckets\_step\_size\_ new buckets, we do a parent circuit breaker checking. Based on this setting, user could control aggregation memory with a certain step size. We are also considering whether we could deprecate \_search.max\_buckets\_ in the future.

> [@liwanjie](#):
>
> Has the `max_buckets` parameter been repealed in subsequent releases (including the latest 7.10.0)? If not repealed, are there any defaults?

It has not been repealed. [Bucket aggregations | Elasticsearch Guide [8.11] | Elastic](https://www.elastic.co/guide/en/elasticsearch/reference/current/search-aggregations-bucket.html)

It defaults to 65,535.

---

<div class="post-metadata">

**Author:** ![liwanjie](https://avatars.discourse-cdn.com/v4/letter/l/c4cdca/32.png) [@liwanjie](https://discuss.elastic.co/u/liwanjie)\
**Post date:** [January 11, 2021, 7:04am UTC](https://discuss.elastic.co/t/about-the-7-x-version-of-the-search-max-buckets-parameter/260512/3 "2021-01-11T07:04:58Z")

</div>

Thank you very much for your reply 😁 😆

---

<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:** [February 8, 2021, 7:05am UTC](https://discuss.elastic.co/t/about-the-7-x-version-of-the-search-max-buckets-parameter/260512/4 "2021-02-08T07:05:01Z")

</div>

This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.