# Scroll vs search\_after memory

**URL:** <https://discuss.elastic.co/t/scroll-vs-search-after-memory/173765>\
**Category:** Elasticsearch\
**Created:** [March 25, 2019, 1:48pm UTC](https://discuss.elastic.co/t/scroll-vs-search-after-memory/173765 "2019-03-25T13:48:44Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![xodn0812](https://avatars.discourse-cdn.com/v4/letter/x/c5a1d2/32.png) [@xodn0812](https://discuss.elastic.co/u/xodn0812)\
**Post date:** [March 25, 2019, 1:48pm UTC](https://discuss.elastic.co/t/scroll-vs-search-after-memory/173765/1 "2019-03-25T13:48:44Z")

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Questions related to elasticsearch search.  
In an instance using 4Gb memory,  
elasticsearch dies with OOM when querying data over 4Gb with scroll API, What about search\_arter ??

Would not it be okay to search 50Gb for search\_arter?  
If i want to output all data to a file, it can be over 50Gb.  
I can not predict the internal behavior.  
Do you know anyone?

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**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\
**Post date:** [March 25, 2019, 2:01pm UTC](https://discuss.elastic.co/t/scroll-vs-search-after-memory/173765/2 "2019-03-25T14:01:33Z")

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What is your scroll query looking like?

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<div class="post-metadata">

**Author:** ![xodn0812](https://avatars.discourse-cdn.com/v4/letter/x/c5a1d2/32.png) [@xodn0812](https://discuss.elastic.co/u/xodn0812)\
**Post date:** [March 25, 2019, 2:38pm UTC](https://discuss.elastic.co/t/scroll-vs-search-after-memory/173765/3 "2019-03-25T14:38:44Z")

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I simply used the java high level API to search all the documents.  
(match\_all)

for () {  
search (scroll\_id);  
scroll\_id = get scroll\_id ();  
}

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<div class="post-metadata">

**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\
**Post date:** [March 25, 2019, 3:10pm UTC](https://discuss.elastic.co/t/scroll-vs-search-after-memory/173765/4 "2019-03-25T15:10:05Z")

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What is the search query?

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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:** [April 22, 2019, 3:10pm UTC](https://discuss.elastic.co/t/scroll-vs-search-after-memory/173765/5 "2019-04-22T15:10:12Z")

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