# Reindexing automatically changed my fieldtype
**URL:** https://discuss.elastic.co/t/reindexing-automatically-changed-my-fieldtype/150741
**Category:** Elasticsearch
**Created:** [October 2, 2018, 5:19pm UTC](https://discuss.elastic.co/t/reindexing-automatically-changed-my-fieldtype/150741 "2018-10-02T17:19:22Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@spdoes](https://discuss.elastic.co/u/spdoes)
#### Post date: [October 2, 2018, 5:19pm UTC](https://discuss.elastic.co/t/reindexing-automatically-changed-my-fieldtype/150741/1 "2018-10-02T17:19:22Z")
In my original index I had location field with datatype of geo\_point, after reindexing it, the same field in new index seems to have changed to floar
When trying to make same query in new index (reindexed from old), I get:
"reason": "failed to find geo\_point field [location]",
old index:
"location": {
"type": "geo\_point"
},
new index:
"location": {
"properties": {
"lat": {
"type": "float"
},
"lon": {
"type": "float"
}
}
When I try to change it (although i know it is ilegal), I get:
```
"type": "illegal_argument_exception",
"reason": "Can't merge a non object mapping [location] with an object mapping [location]"
```
---
### Author:  [@spdoes](https://discuss.elastic.co/u/spdoes)
#### Post date: [October 2, 2018, 6:55pm UTC](https://discuss.elastic.co/t/reindexing-automatically-changed-my-fieldtype/150741/2 "2018-10-02T18:55:03Z")
Having that in mind I am thinking on what options do I have:
1. new reindexing setting that specific field type before
2. ES DLS script inline operation to move it the data from one field to another
3. I wrote a script to move that data to a new field with proper datatype:
however it would take 14 days to finish it, it's about 20M docs
---
### Author:  [@warkolm](https://discuss.elastic.co/u/warkolm)
#### Post date: [October 3, 2018, 10:21am UTC](https://discuss.elastic.co/t/reindexing-automatically-changed-my-fieldtype/150741/3 "2018-10-03T10:21:41Z")
Did you apply the same mapping to the new index before starting the reindex? If you don't it uses dynamic mappings.
---
### Author:  [@spdoes](https://discuss.elastic.co/u/spdoes)
#### Post date: [October 3, 2018, 3:24pm UTC](https://discuss.elastic.co/t/reindexing-automatically-changed-my-fieldtype/150741/4 "2018-10-03T15:24:55Z")
I guess that was my error. I though that in reindexing it would automatically apply the mappings of the original index... : (
as for solution Warkolm, what do you think is the best ?
---
### Author:  [@warkolm](https://discuss.elastic.co/u/warkolm)
#### Post date: [October 3, 2018, 10:13pm UTC](https://discuss.elastic.co/t/reindexing-automatically-changed-my-fieldtype/150741/5 "2018-10-03T22:13:59Z")
Just create the index before and make sure the original mappings are used at that time.
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [October 31, 2018, 10:14pm UTC](https://discuss.elastic.co/t/reindexing-automatically-changed-my-fieldtype/150741/6 "2018-10-31T22:14:06Z")
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