# Elaspic mapper-size not working
**URL:** https://discuss.elastic.co/t/elaspic-mapper-size-not-working/97944
**Category:** Elasticsearch
**Created:** [August 22, 2017, 4:51pm UTC](https://discuss.elastic.co/t/elaspic-mapper-size-not-working/97944 "2017-08-22T16:51:20Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@aliyesami](https://discuss.elastic.co/u/aliyesami)
#### Post date: [August 22, 2017, 4:51pm UTC](https://discuss.elastic.co/t/elaspic-mapper-size-not-working/97944/1 "2017-08-22T16:51:21Z")
I have installed the mapper-size plugin on all cluster nodes and rebooted the server but still I cant modify the mapping , please advise .
> [elasticsearch@hadoop1 bin]$ ./elasticsearch-plugin install mapper-size
> -\> Downloading mapper-size from elastic
> [=================================================] 100%
> -\> Installed mapper-size
> [elasticsearch@hadoop2 bin]$ curl -XPUT 'hadoop5:9200/lanetxn/\_mapping/txn\_details?pretty' -d '
>
> > {
> > "properties":{
> > "\_size": {
> > "enabled": true
> > }
> > }
> > }'
> > {
> > "error" : {
> > "root\_cause" : [
> > {
> > "type" : "remote\_transport\_exception",
> > "reason" : "[hadoop1][10.100.44.17:9300][indices:admin/mapping/put]"
> > }
> > ],
> > "type" : "illegal\_argument\_exception",
> > "reason" : "Field [\_size] is defined both as an object and a field in [txn\_details]"
> > },
> > "status" : 400
> > }
---
### Author:  [@aliyesami](https://discuss.elastic.co/u/aliyesami)
#### Post date: [August 22, 2017, 8:50pm UTC](https://discuss.elastic.co/t/elaspic-mapper-size-not-working/97944/2 "2017-08-22T20:50:38Z")
ok this syntax did the trick
> curl -XPUT 'hadoop5:9200/lanetxn/\_mapping/txn\_details?pretty' -d '
> {
> "\_size": {"enabled": true}
> }'
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [September 19, 2017, 8:50pm UTC](https://discuss.elastic.co/t/elaspic-mapper-size-not-working/97944/3 "2017-09-19T20:50:43Z")
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