# Arrays of objects

**URL:** <https://discuss.elastic.co/t/arrays-of-objects/154388>\
**Category:** Elasticsearch\
**Created:** [October 29, 2018, 6:48am UTC](https://discuss.elastic.co/t/arrays-of-objects/154388 "2018-10-29T06:48:17Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![amit.patra](https://avatars.discourse-cdn.com/v4/letter/a/34f0e0/32.png) [@amit.patra](https://discuss.elastic.co/u/amit.patra)\
**Post date:** [October 29, 2018, 6:48am UTC](https://discuss.elastic.co/t/arrays-of-objects/154388/1 "2018-10-29T06:48:17Z")

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Hi,

My arrays of objects are getting unknown type in kibana.

http": {  
"http\_headers": [  
{  
"host": "[row.bc.yahoo.com](http://row.bc.yahoo.com)",  
"user\_agent": "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2.16) Gecko/20110319 Firefox/3.6.16",  
"referer": "[http://in.mc1373.mail.yahoo.com/mc/md.php?en=UTF-8&v=1](http://in.mc1373.mail.yahoo.com/mc/md.php?en=UTF-8&v=1)",  
"cmd": "GET"  
},  
{  
"date": "Sat, 30 Apr 2011 07:02:07 GMT",  
"cmd": "HTTP"  
}  
]  
}  
}

Its saying "objects in array are not well supported".

What should I do ?

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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:** [October 29, 2018, 7:02am UTC](https://discuss.elastic.co/t/arrays-of-objects/154388/2 "2018-10-29T07:02:22Z")

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> [@amit.patra](#):
>
> My arrays of objects are getting unknown type in kibana.

What do you mean?

I guess you should see in Kibana fields like `http.http_headers.host` for example.

If it's a pure Kibana question, I'd suggest to move your question to #kibana.

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**Author:** ![amit.patra](https://avatars.discourse-cdn.com/v4/letter/a/34f0e0/32.png) [@amit.patra](https://discuss.elastic.co/u/amit.patra)\
**Post date:** [October 29, 2018, 7:32am UTC](https://discuss.elastic.co/t/arrays-of-objects/154388/3 "2018-10-29T07:32:35Z")

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Hi @dadoonet.

Thanks for reply.

Its not kibana question, in kibana interface we are seeing that "http.http\_headers" field is getting unknown type (?). We have also set mapping like below 🙂

"http-alt": {  
"properties": {  
"http\_headers": {  
"type": "nested"  
}  
}  
}  
My question is what will the data type so that we avoid such unknown type.

Thanks in advance.

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**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\
**Post date:** [October 29, 2018, 7:46am UTC](https://discuss.elastic.co/t/arrays-of-objects/154388/4 "2018-10-29T07:46:22Z")

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As described in the error message, [Kibana does unfortunately not currently support nested mappings](https://github.com/elastic/kibana/issues/1084). there is also an [issue open](https://github.com/elastic/kibana/issues/23535) around how nested fields are reported to Kibana. What are you trying to do with these fields?

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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:** [November 26, 2018, 7:46am UTC](https://discuss.elastic.co/t/arrays-of-objects/154388/5 "2018-11-26T07:46:29Z")

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