# Is there a way to know memory required

**URL:** <https://discuss.elastic.co/t/is-there-a-way-to-know-memory-required/23304>\
**Category:** Elasticsearch\
**Created:** [April 18, 2015, 5:40am UTC](https://discuss.elastic.co/t/is-there-a-way-to-know-memory-required/23304 "2015-04-18T05:40:46Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![bvnagaraju](https://avatars.discourse-cdn.com/v4/letter/b/ed655f/32.png) [@bvnagaraju](https://discuss.elastic.co/u/bvnagaraju)\
**Post date:** [April 18, 2015, 5:40am UTC](https://discuss.elastic.co/t/is-there-a-way-to-know-memory-required/23304/1 "2015-04-18T05:40:46Z")

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Hi ,

Is there a way to know minimum memory required for X no of fields created  
in index ?

Please help me with some thoughts .For example :If index has 20 fields ,  
how much memory elastic search need to keep the index in memory ? or how  
does it works?

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**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\
**Post date:** [April 19, 2015, 2:40am UTC](https://discuss.elastic.co/t/is-there-a-way-to-know-memory-required/23304/2 "2015-04-19T02:40:49Z")

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Not really; how large are your fields, are they analysed, are you using doc  
values?  
You really need to test this with your own data set.

On 18 April 2015 at 15:40, bvnrwork [budda08nitt@gmail.com](mailto:budda08nitt@gmail.com) wrote:

> Hi ,
> 
> Is there a way to know minimum memory required for X no of fields created  
> in index ?
> 
> Please help me with some thoughts .For example :If index has 20 fields ,  
> how much memory Elasticsearch need to keep the index in memory ? or how  
> does it works?
> 
> --  
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> [https://groups.google.com/d/msgid/elasticsearch/69c63aec-3388-47d8-88c4-c12269e9d8c1%40googlegroups.com?utm\_medium=email&utm\_source=footer](https://groups.google.com/d/msgid/elasticsearch/69c63aec-3388-47d8-88c4-c12269e9d8c1%40googlegroups.com?utm_medium=email&utm_source=footer)  
> .  
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**Author:** ![bvnagaraju](https://avatars.discourse-cdn.com/v4/letter/b/ed655f/32.png) [@bvnagaraju](https://discuss.elastic.co/u/bvnagaraju)\
**Post date:** [April 22, 2015, 7:56pm UTC](https://discuss.elastic.co/t/is-there-a-way-to-know-memory-required/23304/3 "2015-04-22T19:56:56Z")

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35 fields - each contains 10 KB of text and what is doc values you said ?

On Saturday, 18 April 2015 22:41:18 UTC-4, Mark Walkom wrote:

> Not really; how large are your fields, are they analysed, are you using  
> doc values?  
> You really need to test this with your own data set.
> 
> On 18 April 2015 at 15:40, bvnrwork \<[budda...@gmail.com](mailto:budda...@gmail.com) \<javascript:\>\>  
> wrote:
> 
> > Hi ,
> > 
> > Is there a way to know minimum memory required for X no of fields created  
> > in index ?
> > 
> > Please help me with some thoughts .For example :If index has 20 fields ,  
> > how much memory Elasticsearch need to keep the index in memory ? or how  
> > does it works?
> > 
> > --  
> > You received this message because you are subscribed to the Google Groups  
> > "elasticsearch" group.  
> > To unsubscribe from this group and stop receiving emails from it, send an  
> > email to [elasticsearc...@googlegroups.com](mailto:elasticsearc...@googlegroups.com) \<javascript:\>.  
> > To view this discussion on the web visit  
> > [https://groups.google.com/d/msgid/elasticsearch/69c63aec-3388-47d8-88c4-c12269e9d8c1%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/69c63aec-3388-47d8-88c4-c12269e9d8c1%40googlegroups.com)  
> > [https://groups.google.com/d/msgid/elasticsearch/69c63aec-3388-47d8-88c4-c12269e9d8c1%40googlegroups.com?utm\_medium=email&utm\_source=footer](https://groups.google.com/d/msgid/elasticsearch/69c63aec-3388-47d8-88c4-c12269e9d8c1%40googlegroups.com?utm_medium=email&utm_source=footer)  
> > .  
> > For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout).

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**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\
**Post date:** [April 23, 2015, 1:18am UTC](https://discuss.elastic.co/t/is-there-a-way-to-know-memory-required/23304/4 "2015-04-23T01:18:29Z")

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See the docs or more info on doc values -  
[http://www.elastic.co/guide/en/elasticsearch/guide/current/doc-values.html](http://www.elastic.co/guide/en/elasticsearch/guide/current/doc-values.html)

On 23 April 2015 at 05:56, bvnrwork [budda08nitt@gmail.com](mailto:budda08nitt@gmail.com) wrote:

> 35 fields - each contains 10 KB of text and what is doc values you said ?
> 
> On Saturday, 18 April 2015 22:41:18 UTC-4, Mark Walkom wrote:
> 
> > Not really; how large are your fields, are they analysed, are you using  
> > doc values?  
> > You really need to test this with your own data set.
> > 
> > On 18 April 2015 at 15:40, bvnrwork [budda...@gmail.com](mailto:budda...@gmail.com) wrote:
> > 
> > > Hi ,
> > > 
> > > Is there a way to know minimum memory required for X no of fields  
> > > created in index ?
> > > 
> > > Please help me with some thoughts .For example :If index has 20 fields ,  
> > > how much memory Elasticsearch need to keep the index in memory ? or how  
> > > does it works?
> > > 
> > > --  
> > > You received this message because you are subscribed to the Google  
> > > Groups "elasticsearch" group.  
> > > To unsubscribe from this group and stop receiving emails from it, send  
> > > an email to [elasticsearc...@googlegroups.com](mailto:elasticsearc...@googlegroups.com).  
> > > To view this discussion on the web visit  
> > > [https://groups.google.com/d/msgid/elasticsearch/69c63aec-3388-47d8-88c4-c12269e9d8c1%40googlegroups.com](https://groups.google.com/d/msgid/elasticsearch/69c63aec-3388-47d8-88c4-c12269e9d8c1%40googlegroups.com)  
> > > [https://groups.google.com/d/msgid/elasticsearch/69c63aec-3388-47d8-88c4-c12269e9d8c1%40googlegroups.com?utm\_medium=email&utm\_source=footer](https://groups.google.com/d/msgid/elasticsearch/69c63aec-3388-47d8-88c4-c12269e9d8c1%40googlegroups.com?utm_medium=email&utm_source=footer)  
> > > .  
> > > For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout).
> > 
> > --  
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> > [https://groups.google.com/d/msgid/elasticsearch/7c8d50b9-29ec-4b1c-956c-63ecd710a4f6%40googlegroups.com?utm\_medium=email&utm\_source=footer](https://groups.google.com/d/msgid/elasticsearch/7c8d50b9-29ec-4b1c-956c-63ecd710a4f6%40googlegroups.com?utm_medium=email&utm_source=footer)  
> > .  
> > For more options, visit [https://groups.google.com/d/optout](https://groups.google.com/d/optout).

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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:** [July 6, 2017, 12:18am UTC](https://discuss.elastic.co/t/is-there-a-way-to-know-memory-required/23304/5 "2017-07-06T00:18:10Z")

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