# Added new field in elasticsearch
**URL:** https://discuss.elastic.co/t/added-new-field-in-elasticsearch/69651
**Category:** Elasticsearch
**Created:** [December 21, 2016, 8:57am UTC](https://discuss.elastic.co/t/added-new-field-in-elasticsearch/69651 "2016-12-21T08:57:19Z")
**Posts on this page:** 7
**Page:** 1
### Author:  [@anonymous4](https://discuss.elastic.co/u/anonymous4)
#### Post date: [December 21, 2016, 8:57am UTC](https://discuss.elastic.co/t/added-new-field-in-elasticsearch/69651/1 "2016-12-21T08:57:19Z")
Hi,
I have added new field in the existing index using-
POST honeypot/\_mapping/type
{
"properties" :
{
"extract\_only\_url" :
{
"type":"string",
"index" :"not\_analyzed"
}
}
}
Now when i try to access this index using python -
res = es.search(index = 'honeypot',size=honeyport\_doc\_count, body={"query": {"match\_all": {}}})
print res
In the above response, newly added field is not visible in printing 'res'. I need to update this newly added field using python script.
---
### Author:  [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [December 21, 2016, 9:30am UTC](https://discuss.elastic.co/t/added-new-field-in-elasticsearch/69651/2 "2016-12-21T09:30:38Z")
You did not change previous documents but only the mapping.
---
### Author:  [@anonymous4](https://discuss.elastic.co/u/anonymous4)
#### Post date: [December 21, 2016, 9:46am UTC](https://discuss.elastic.co/t/added-new-field-in-elasticsearch/69651/3 "2016-12-21T09:46:36Z")
@dadoonet can you please tell me how to do that?
---
### Author:  [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [December 21, 2016, 10:04am UTC](https://discuss.elastic.co/t/added-new-field-in-elasticsearch/69651/4 "2016-12-21T10:04:45Z")
Reindex your documents.
If you index
```auto
{
"foo": "bar"
}
```
Then update the mapping by adding a new field `res` there is no chance that your document have been updated magically.
It will come back as you indexed it:
```auto
{
"foo": "bar"
}
```
---
### Author:  [@anonymous4](https://discuss.elastic.co/u/anonymous4)
#### Post date: [December 21, 2016, 10:16am UTC](https://discuss.elastic.co/t/added-new-field-in-elasticsearch/69651/5 "2016-12-21T10:16:20Z")
@dadoonet This is what i am asking, Basically i added new field in elasticsearch mapping but how can i add new field in all documents syntactically.
Reindexing basically copy all the document from old index to new index but how the new field will be added in documents?
if \_update\_by\_query works for this,then how to write that?
---
### Author:  [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [December 21, 2016, 10:38am UTC](https://discuss.elastic.co/t/added-new-field-in-elasticsearch/69651/6 "2016-12-21T10:38:47Z")
How elasticsearch can know what is the value you want to set for this field?
You must provide it.
The best option IMO is to reindex all your data:
- from the source. If the data is coming from your database, read its value and provide it to elasticsearch
- using [reindex API](https://www.elastic.co/guide/en/elasticsearch/reference/5.1/docs-reindex.html) and [ingest features](https://www.elastic.co/guide/en/elasticsearch/reference/current/ingest.html).
Something like:
```auto
PUT _ingest/pipeline/my-pipeline-id
{
"processors" : [
{
"set" : {
"field": "foo",
"value": "bar"
}
}
]
}
POST _reindex
{
"source": {
"index": "oldindex"
},
"dest": {
"index": "newindex",
"pipeline": "my-pipeline-id"
}
}
```
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [January 18, 2017, 10:38am UTC](https://discuss.elastic.co/t/added-new-field-in-elasticsearch/69651/7 "2017-01-18T10:38:49Z")
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