# How to enable size-mapper plugin / \_size field via RestHighLevelClient
**URL:** https://discuss.elastic.co/t/how-to-enable-size-mapper-plugin-size-field-via-resthighlevelclient/314501
**Category:** Elasticsearch
**Tags:** language-clients
**Created:** [September 15, 2022, 11:16am UTC](https://discuss.elastic.co/t/how-to-enable-size-mapper-plugin-size-field-via-resthighlevelclient/314501 "2022-09-15T11:16:46Z")
**Posts on this page:** 20
**Page:** 1
### Author:  [@rowi1de](https://discuss.elastic.co/u/rowi1de)
#### Post date: [September 15, 2022, 11:16am UTC](https://discuss.elastic.co/t/how-to-enable-size-mapper-plugin-size-field-via-resthighlevelclient/314501/1 "2022-09-15T11:16:46Z")
Hey Folks,
I'm trying to add the \_size field to an existing index via RestHighLevelClient
> **[Using the \_size field | Elasticsearch Plugins and Integrations \[8.4\] | Elastic](https://www.elastic.co/guide/en/elasticsearch/plugins/current/mapper-size-usage.html)**
and failing to see there I could put the following
```auto
"mappings": {
"_size": {
"enabled": true
}
}
```
the Dev Tools equivalent is
```auto
curl -X PUT "localhost:9200/my-index-000001?pretty" -H 'Content-Type: application/json' -d'
{
"mappings": {
"_size": {
"enabled": true
}
}
}
'
```
trying the same for an existing index:
```auto
PUT existing/_mapping
{
"mappings": {
"_size": {
"enabled": true
}
}
}
```
will result in
```auto
{
"error" : {
"root_cause" : [
{
"type" : "mapper_parsing_exception",
"reason" : "Root mapping definition has unsupported parameters: [mappings : {_size={enabled=true}}]"
}
],
"type" : "mapper_parsing_exception",
"reason" : "Failed to parse mapping [_doc]: Root mapping definition has unsupported parameters: [mappings : {_size={enabled=true}}]",
"caused_by" : {
"type" : "mapper_parsing_exception",
"reason" : "Root mapping definition has unsupported parameters: [mappings : {_size={enabled=true}}]"
}
},
"status" : 400
}
```
---
### Author:  [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [September 15, 2022, 2:43pm UTC](https://discuss.elastic.co/t/how-to-enable-size-mapper-plugin-size-field-via-resthighlevelclient/314501/2 "2022-09-15T14:43:24Z")
Did you install the plugin on all nodes and restarted the cluster?
---
### Author:  [@rowi1de](https://discuss.elastic.co/u/rowi1de)
#### Post date: [September 20, 2022, 12:42pm UTC](https://discuss.elastic.co/t/how-to-enable-size-mapper-plugin-size-field-via-resthighlevelclient/314501/3 "2022-09-20T12:42:13Z")
Yes I did and it works when doing it via the Devtools console.
I just don't know
- How to do it for an existing index
- How to translate it to a mappings.json to do it programmatically via
```nohighlight
private val elasticsearchClient: org.elasticsearch.client.RestHighLevelClient
elasticsearchClient.indices().putIndexTemplate(
PutComposableIndexTemplateRequest()
.name(elkConfig.templateName)
.indexTemplate(indexTemplate),
RequestOptions.DEFAULT
)
```
which consumes a `mapping.json` which works for normal index templates but I'm unable to add the "\_size" field:
```auto
{
"mappings": {
"_doc": {
"_size": {
"enabled": true
}
}
}
```
---
### Author:  [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [September 27, 2022, 3:25am UTC](https://discuss.elastic.co/t/how-to-enable-size-mapper-plugin-size-field-via-resthighlevelclient/314501/4 "2022-09-27T03:25:10Z")
Could you try with:
```auto
PUT existing/_mapping
{
"_size": {
"enabled": true
}
}
```
---
### Author:  [@rowi1de](https://discuss.elastic.co/u/rowi1de)
#### Post date: [October 4, 2022, 11:42am UTC](https://discuss.elastic.co/t/how-to-enable-size-mapper-plugin-size-field-via-resthighlevelclient/314501/5 "2022-10-04T11:42:39Z")
> [@dadoonet](#):
>
> ```auto
> PUT existing/_mapping
> {
> "_size": {
> "enabled": true
> }
> }
>
> ```
@dadoonet I noticed the plugin wasn't activated on our cluster. Also a restart of all nodes didn't work
---
### Author:  [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [October 4, 2022, 1:01pm UTC](https://discuss.elastic.co/t/how-to-enable-size-mapper-plugin-size-field-via-resthighlevelclient/314501/6 "2022-10-04T13:01:20Z")
So the plugin has been deployed on the cluster now?
---
### Author:  [@rowi1de](https://discuss.elastic.co/u/rowi1de)
#### Post date: [October 4, 2022, 1:23pm UTC](https://discuss.elastic.co/t/how-to-enable-size-mapper-plugin-size-field-via-resthighlevelclient/314501/7 "2022-10-04T13:23:00Z")
hard to tell
the following request fails:
```auto
PUT test_size_plugin
{
"mappings": {
"_size": {
"enabled": true
}
}
}
```
```auto
{
"error" : {
"root_cause" : [
{
"type" : "mapper_parsing_exception",
"reason" : "Root mapping definition has unsupported parameters: [_size : {enabled=true}]"
}
],
"type" : "mapper_parsing_exception",
"reason" : "Failed to parse mapping [_doc]: Root mapping definition has unsupported parameters: [_size : {enabled=true}]",
"caused_by" : {
"type" : "mapper_parsing_exception",
"reason" : "Root mapping definition has unsupported parameters: [_size : {enabled=true}]"
}
},
"status" : 400
}
```
`GET /_cat/plugins?v=true&s=component&h=name,component,version,description`
While looking through the JSON, I noticed that the plugin seems to be activated on the “resources” level, but not on the “cluster\_topology” level.
`$.resources.elasticsearch.plan.elasticsearch.enabled_built_in_plugins = [“mapper-size”]`
The plugin shows up in the plan definition of elasticsearch but not in the node definition:
```auto
"resources": {
"elasticsearch": [
{
"region": "aws-eu-central-1",
"ref_id": "main-elasticsearch",
"plan": {
"cluster_topology": [
{
"zone_count": 2,
"elasticsearch": {
"user_plugins": [],
"system_settings": {
...
},
"user_bundles": [],
"enabled_built_in_plugins": [] # <- The plugin seems to be missing here and in the other nodes
},
...
```
---
### Author:  [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [October 4, 2022, 1:57pm UTC](https://discuss.elastic.co/t/how-to-enable-size-mapper-plugin-size-field-via-resthighlevelclient/314501/8 "2022-10-04T13:57:55Z")
So it has not been deployed. You need to add the plugin to all nodes and restart all nodes first.
Until `GET /_cat/plugins?v` shows it, you won't be able to use the plugin.
---
### Author:  [@rowi1de](https://discuss.elastic.co/u/rowi1de)
#### Post date: [October 4, 2022, 2:27pm UTC](https://discuss.elastic.co/t/how-to-enable-size-mapper-plugin-size-field-via-resthighlevelclient/314501/9 "2022-10-04T14:27:52Z")
We did that, even tried twice
---
### Author:  [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [October 4, 2022, 3:18pm UTC](https://discuss.elastic.co/t/how-to-enable-size-mapper-plugin-size-field-via-resthighlevelclient/314501/10 "2022-10-04T15:18:02Z")
But what did you do exactly? I'm lost 🙂
---
### Author:  [@rowi1de](https://discuss.elastic.co/u/rowi1de)
#### Post date: [October 4, 2022, 4:16pm UTC](https://discuss.elastic.co/t/how-to-enable-size-mapper-plugin-size-field-via-resthighlevelclient/314501/11 "2022-10-04T16:16:10Z")
Oh sorry:
- enable the size mapper plugin in the deployment of our [elastic.co](http://elastic.co) instance
- restart the whole deployment
- try to query enabled plugins =\> it’s missing
- try to enabled the mapping for “\_size” fields =\> fails
We tried the steps twice (with additional restart after disabling the plug-in before adding again)
---
### Author:  [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)
#### Post date: [October 4, 2022, 4:18pm UTC](https://discuss.elastic.co/t/how-to-enable-size-mapper-plugin-size-field-via-resthighlevelclient/314501/12 "2022-10-04T16:18:27Z")
@dadoonet Is this a setting you can add to an existing index holding data?
---
### Author:  [@rowi1de](https://discuss.elastic.co/u/rowi1de)
#### Post date: [October 4, 2022, 4:34pm UTC](https://discuss.elastic.co/t/how-to-enable-size-mapper-plugin-size-field-via-resthighlevelclient/314501/13 "2022-10-04T16:34:53Z")
@Christian_Dahlqvist it fails for new and existing Index with data
---
### Author:  [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)
#### Post date: [October 4, 2022, 4:51pm UTC](https://discuss.elastic.co/t/how-to-enable-size-mapper-plugin-size-field-via-resthighlevelclient/314501/14 "2022-10-04T16:51:41Z")
What is the output of the [cat plugins API](https://www.elastic.co/guide/en/elasticsearch/reference/8.4/cat-plugins.html)?
Are you able to set it in an index template and create a new index based on that?
---
### Author:  [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [October 5, 2022, 6:13am UTC](https://discuss.elastic.co/t/how-to-enable-size-mapper-plugin-size-field-via-resthighlevelclient/314501/15 "2022-10-05T06:13:24Z")
I'm not sure you can but first I want to make sure the plugin is working. 😊
---
### Author:  [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [October 5, 2022, 6:14am UTC](https://discuss.elastic.co/t/how-to-enable-size-mapper-plugin-size-field-via-resthighlevelclient/314501/16 "2022-10-05T06:14:51Z")
You are running on [cloud.elastic.co](http://cloud.elastic.co)? Is that correct?
If so, did you save the settings when you added the plugin? I have been confused myself in the past by the UI.
---
### Author:  [@rowi1de](https://discuss.elastic.co/u/rowi1de)
#### Post date: [October 5, 2022, 6:54am UTC](https://discuss.elastic.co/t/how-to-enable-size-mapper-plugin-size-field-via-resthighlevelclient/314501/17 "2022-10-05T06:54:21Z")
Yes 👍🏼
The plug-in activation is also visible the the deployment activity summary.
However it seems like the plug-in is not activated on all nodes, see the snippet of “Equivalent API JSON” which represents enabling the feature via UI
---
### Author:  [@rowi1de](https://discuss.elastic.co/u/rowi1de)
#### Post date: [October 5, 2022, 6:56am UTC](https://discuss.elastic.co/t/how-to-enable-size-mapper-plugin-size-field-via-resthighlevelclient/314501/18 "2022-10-05T06:56:52Z")
It’s missing in the cat output as well
---
### Author:  [@dadoonet](https://discuss.elastic.co/u/dadoonet)
#### Post date: [October 5, 2022, 9:52am UTC](https://discuss.elastic.co/t/how-to-enable-size-mapper-plugin-size-field-via-resthighlevelclient/314501/19 "2022-10-05T09:52:22Z")
So I'd suggest to open a ticket with the support team.
---
### Author:  [@rowi1de](https://discuss.elastic.co/u/rowi1de)
#### Post date: [October 18, 2022, 7:19pm UTC](https://discuss.elastic.co/t/how-to-enable-size-mapper-plugin-size-field-via-resthighlevelclient/314501/20 "2022-10-18T19:19:38Z")
Yes did that … research is ongoing
[Next page](https://discuss.elastic.co/t/how-to-enable-size-mapper-plugin-size-field-via-resthighlevelclient/314501.md?page=2)