# Update mapping from text to text.keyword

**URL:** https://discuss.elastic.co/t/update-mapping-from-text-to-text-keyword/228908
**Category:** Elasticsearch
**Created:** [April 20, 2020, 5:34pm UTC](https://discuss.elastic.co/t/update-mapping-from-text-to-text-keyword/228908 "2020-04-20T17:34:36Z")
**Posts on this page:** 5
**Page:** 1

<div class="post-metadata">

### Author: ![Hari\_Krishnan](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/hari_krishnan/32/66696_2.png) [@Hari\_Krishnan](https://discuss.elastic.co/u/Hari_Krishnan)
#### Post date: [April 20, 2020, 5:34pm UTC](https://discuss.elastic.co/t/update-mapping-from-text-to-text-keyword/228908/1 "2020-04-20T17:34:37Z")

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Hello all,  
I have my elasticsearch with 100gb of data and now I’m trying to add keyword for one field . So is it possible to update the mapping without reindexing the date

if keyword is not there for particular field I couldn’t not apply visualization

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<div class="post-metadata">

### 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: [April 20, 2020, 7:51pm UTC](https://discuss.elastic.co/t/update-mapping-from-text-to-text-keyword/228908/2 "2020-04-20T19:51:11Z")

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No, adding a field will require reindexing.

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<div class="post-metadata">

### Author: ![Hari\_Krishnan](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/hari_krishnan/32/66696_2.png) [@Hari\_Krishnan](https://discuss.elastic.co/u/Hari_Krishnan)
#### Post date: [April 21, 2020, 2:54am UTC](https://discuss.elastic.co/t/update-mapping-from-text-to-text-keyword/228908/3 "2020-04-21T02:54:05Z")

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I am not going to add extra index just need to make keyword for existing field

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<div class="post-metadata">

### Author: ![Datakids](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/datakids/32/39622_2.png) [@Datakids](https://discuss.elastic.co/u/Datakids)
#### Post date: [April 21, 2020, 6:02am UTC](https://discuss.elastic.co/t/update-mapping-from-text-to-text-keyword/228908/4 "2020-04-21T06:02:04Z")

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Hi,  
Im not 100% sure but may this helps a bit.

First read the Put Mapping API:  
[https://www.elastic.co/guide/en/elasticsearch/reference/current/indices-put-mapping.html](https://www.elastic.co/guide/en/elasticsearch/reference/current/indices-put-mapping.html)

Than take a look here:

For a special EXISTING Field:

```
POST /yourindex/_update_by_query?conflicts=proceed
{
  "query": {
    "bool": {
      "filter": {
        "terms": {
          "EXISTING": [
            "1234"
          ]
        }
      }
    }
  },
  "script": {
    "source": "ctx._source.EXISTING_New = ctx._source.EXISTING",
    "lang": "painless"
  }
}

```

**Or for all EXISTING Fields:**

```
POST /yourindex/_update_by_query?conflicts=proceed
{
  "query": {
    "match_all": {}
  },
  "source": "ctx._source.EXISTING_New = ctx._source.EXISTING",
  "lang": "painless"
}

```

If no special Mapping is PUT, elastic should generate a text and keyword field for **EXISTING\_New**

Maybe you need to Add a new Mapping to recocgnize new fields as Keyword to your Index!?  
If so take a look here to do that with no downtime using Alias:

[mappings-and-settings-without-downtime](https://codeburst.io/modify-elasticsearch-mappings-and-settings-without-downtime-223911c0e521)

Regards

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<div class="post-metadata">

### Author: ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)
#### Post date: [May 19, 2020, 6:02am UTC](https://discuss.elastic.co/t/update-mapping-from-text-to-text-keyword/228908/5 "2020-05-19T06:02:05Z")

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