# How to mention parent child relation in logstash

**URL:** <https://discuss.elastic.co/t/how-to-mention-parent-child-relation-in-logstash/57376>\
**Category:** Logstash\
**Created:** [August 5, 2016, 4:51pm UTC](https://discuss.elastic.co/t/how-to-mention-parent-child-relation-in-logstash/57376 "2016-08-05T16:51:44Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![spraveenjd](https://avatars.discourse-cdn.com/v4/letter/s/a698b9/32.png) [@spraveenjd](https://discuss.elastic.co/u/spraveenjd)\
**Post date:** [August 5, 2016, 4:51pm UTC](https://discuss.elastic.co/t/how-to-mention-parent-child-relation-in-logstash/57376/1 "2016-08-05T16:51:44Z")

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We can create parent child relation in the mapping document. How to do it in the logstash. Please help on this

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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:** [August 6, 2016, 4:50am UTC](https://discuss.elastic.co/t/how-to-mention-parent-child-relation-in-logstash/57376/2 "2016-08-06T04:50:04Z")

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You can't unfortunately.

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**Author:** ![spraveenjd](https://avatars.discourse-cdn.com/v4/letter/s/a698b9/32.png) [@spraveenjd](https://discuss.elastic.co/u/spraveenjd)\
**Post date:** [September 6, 2016, 2:17pm UTC](https://discuss.elastic.co/t/how-to-mention-parent-child-relation-in-logstash/57376/3 "2016-09-06T14:17:06Z")

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We have to create the parent child index in elastic search. Once it created we can load the data from logstash.  
In logstash we add the element parent =\> "%{parentdocument index id}". No specific change in the parent document logstash config

output {  
elasticsearch {  
index =\> "indexName"  
document\_id =\> "%{document id}"  
document\_type =\> "document type"  
parent =\> "%{parent document id}"  
}  
}

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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, 4:39am UTC](https://discuss.elastic.co/t/how-to-mention-parent-child-relation-in-logstash/57376/4 "2017-07-06T04:39:38Z")

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