# Parallel search after

**URL:** <https://discuss.elastic.co/t/parallel-search-after/241777>\
**Category:** Elasticsearch\
**Created:** [July 19, 2020, 9:35am UTC](https://discuss.elastic.co/t/parallel-search-after/241777 "2020-07-19T09:35:52Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![liron\_gofberg](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/liron_gofberg/32/59823_2.png) [@liron\_gofberg](https://discuss.elastic.co/u/liron_gofberg)\
**Post date:** [July 19, 2020, 9:35am UTC](https://discuss.elastic.co/t/parallel-search-after/241777/1 "2020-07-19T09:35:53Z")

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Hi,

How can search after can be parallel if results from the previous page help the retrieval of the next page?

but I can see in the documentation that it is parallel

 ![image](https://us1.discourse-cdn.com/elastic/original/3X/b/f/bf3c7c4f0e9b098d5da6bbbd530be13ed062c5a4.png)

thanks,  
Liron

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**Author:** ![spinscale](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/spinscale/32/25011_2.png) [@spinscale](https://discuss.elastic.co/u/spinscale)\
**Post date:** [July 23, 2020, 7:06am UTC](https://discuss.elastic.co/t/parallel-search-after/241777/2 "2020-07-23T07:06:31Z")

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The parallel refers to many ongoing requests in parallel in this paragraph, not referring to the same user/session sending one request after the other. If you have thousands of users who each are paging through results at different times and different speeds, then having to open thousands of scroll searches might require a lot of open file handles while writing on that index happens.

Hope this clarifies things a little!

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<div class="post-metadata">

**Author:** ![liron\_gofberg](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/liron_gofberg/32/59823_2.png) [@liron\_gofberg](https://discuss.elastic.co/u/liron_gofberg)\
**Post date:** [July 23, 2020, 4:35pm UTC](https://discuss.elastic.co/t/parallel-search-after/241777/3 "2020-07-23T16:35:54Z")

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Thanks 🙂!

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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:** [August 20, 2020, 4:35pm UTC](https://discuss.elastic.co/t/parallel-search-after/241777/4 "2020-08-20T16:35:55Z")

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