# Nested json inside a json also getting parsed into different fields using JSON Filter Plugin
**URL:** https://discuss.elastic.co/t/nested-json-inside-a-json-also-getting-parsed-into-different-fields-using-json-filter-plugin/250939
**Category:** Logstash
**Created:** [October 5, 2020, 7:29am UTC](https://discuss.elastic.co/t/nested-json-inside-a-json-also-getting-parsed-into-different-fields-using-json-filter-plugin/250939 "2020-10-05T07:29:17Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@ParashB](https://discuss.elastic.co/u/ParashB)
#### Post date: [October 5, 2020, 7:29am UTC](https://discuss.elastic.co/t/nested-json-inside-a-json-also-getting-parsed-into-different-fields-using-json-filter-plugin/250939/1 "2020-10-05T07:29:17Z")
Hi,
I have a nested JSON inside a JSON field which is also getting parsed. I do not want to parse the nested JSON. example json:
`log : {"name":"abc","location":{"city":"New York","country":"US"}}`
Logstash filter:
json {
source =\> "log"
}
Parsed as
{
"name":"abc",
"location.city":"New York",
"location.country":"US"
}
But the requirement is to have it in this format
{
"name":"abc",
"location":"{"city":"New York","country":"US"}"
}
---
### Author:  [@Badger](https://discuss.elastic.co/u/Badger)
#### Post date: [October 5, 2020, 2:10pm UTC](https://discuss.elastic.co/t/nested-json-inside-a-json-also-getting-parsed-into-different-fields-using-json-filter-plugin/250939/2 "2020-10-05T14:10:34Z")
You cannot stop it parsing it, you could re-encode it using the json\_encode filter.
---
### Author:  [@ParashB](https://discuss.elastic.co/u/ParashB)
#### Post date: [October 6, 2020, 8:58am UTC](https://discuss.elastic.co/t/nested-json-inside-a-json-also-getting-parsed-into-different-fields-using-json-filter-plugin/250939/3 "2020-10-06T08:58:03Z")
The problem is its not just 2-3 fields but 1000s of fields in the nested json which is causing a mapping explode in the index. I need to stop the nested json to be parsed into different fields.
---
### Author:  [@Badger](https://discuss.elastic.co/u/Badger)
#### Post date: [October 6, 2020, 1:36pm UTC](https://discuss.elastic.co/t/nested-json-inside-a-json-also-getting-parsed-into-different-fields-using-json-filter-plugin/250939/4 "2020-10-06T13:36:49Z")
Maybe you should turn off [dynamic mapping](https://www.elastic.co/guide/en/elasticsearch/reference/current/dynamic-mapping.html).
---
### Author:  [@ParashB](https://discuss.elastic.co/u/ParashB)
#### Post date: [October 7, 2020, 10:27am UTC](https://discuss.elastic.co/t/nested-json-inside-a-json-also-getting-parsed-into-different-fields-using-json-filter-plugin/250939/5 "2020-10-07T10:27:33Z")
Thanks @Badger, disabling dynamic mapping helped. Mapping as below
"location" : {
"type" : "object",
"enabled" : false
}
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [November 4, 2020, 10:27am UTC](https://discuss.elastic.co/t/nested-json-inside-a-json-also-getting-parsed-into-different-fields-using-json-filter-plugin/250939/6 "2020-11-04T10:27:35Z")
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