# Reindexing doesnt work
**URL:** https://discuss.elastic.co/t/reindexing-doesnt-work/262693
**Category:** Elasticsearch
**Created:** [January 29, 2021, 9:55pm UTC](https://discuss.elastic.co/t/reindexing-doesnt-work/262693 "2021-01-29T21:55:27Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@Deny7](https://discuss.elastic.co/u/Deny7)
#### Post date: [January 29, 2021, 9:55pm UTC](https://discuss.elastic.co/t/reindexing-doesnt-work/262693/1 "2021-01-29T21:55:27Z")
Hi,
I changed mapping to index so I wanted reindex. I have about 200 daily indicies that I want reindex. I used bellow command. When I ran it gave me 504 timeout error. When I checked `GET /_cat/indices?v` there is created about 100 copies with `-reindexed` at the end. But these indicies are empty and they have **docs.count: 5** and nothing is happening. Their health is green and status is open. When I ran `GET /_tasks?detailed=true&actions=*reindex&group_by=parents` it gives me no tasks. When I check the ES log I see lot of:
> org.elasticsearch.transport.RemoteTransportException: [\*\*\*\*][\*\*\*\*\*:9300][indices:data/read/search[phase/query]]
> Caused by: org.elasticsearch.search.query.QueryPhaseExecutionException: Query Failed [Failed to execute main query]
Can somebody help?
**COMMAND:**
```
POST _reindex
{
"source": {
"index": "nginxprx-*"
},
"dest": {
"index": "nginxprx"
},
"script": {
"lang": "painless",
"source": "ctx._index = 'nginxprx-' + (ctx._index.substring('nginxprx-'.length(), ctx._index.length())) + '-reindexed'"
}
}
```
---
### Author:  [@warkolm](https://discuss.elastic.co/u/warkolm)
#### Post date: [February 1, 2021, 12:24am UTC](https://discuss.elastic.co/t/reindexing-doesnt-work/262693/2 "2021-02-01T00:24:36Z")
Can you post more of the Elasticsearch logs?
Have you tried with just one index?
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [March 1, 2021, 12:24am UTC](https://discuss.elastic.co/t/reindexing-doesnt-work/262693/3 "2021-03-01T00:24:37Z")
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