# Re-index API creates multiple tasks
**URL:** https://discuss.elastic.co/t/re-index-api-creates-multiple-tasks/121571
**Category:** Elasticsearch
**Created:** [February 26, 2018, 10:09pm UTC](https://discuss.elastic.co/t/re-index-api-creates-multiple-tasks/121571 "2018-02-26T22:09:51Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@ayushsangani](https://discuss.elastic.co/u/ayushsangani)
#### Post date: [February 26, 2018, 10:09pm UTC](https://discuss.elastic.co/t/re-index-api-creates-multiple-tasks/121571/1 "2018-02-26T22:09:51Z")
Hey all,
ES version: 2.4.3
I have been using re-index API since it's launch in 2.X, it's been working fine until recently/last year. I'm noticing that whenever I execute a reindex request, it starts with one task. After a minute or so reindex API spawns multiple tasks doing the same operation which in-turn puts a lot of load on our server and brings it down.
Request to start reindexing:
```auto
POST /_reindex?refresh&wait_for_completition=false
{
"conflicts": "proceed",
"source": {
"index": "stage-index-1",
"size": 10000
},
"dest": {
"index": "stage-index-0"
}
}
```
After few minutes status of reindex task:
```auto
GET /_tasks/?pretty&detailed=true&actions=*reindex
{
"nodes": {
"4_MedlkOWRJ-dXEgd8TYLsg": {
"name": "stage-search-1b",
"transport_address": "10.99.111.176:9300",
"host": "10.91.000.146",
"ip": "10.91.000.146:9300",
"attributes": {
"aws_availability_zone": "us-east-1d",
"data": "false",
"zone": "us-east-1d",
"master": "true"
},
"tasks": {
"4_MedlkOWRJ-dXEgd8TYLsg:16307": {
"node": "4_MedlkOWRJ-dXEgd8TYLsg",
"id": 16307,
"type": "transport",
"action": "indices:data/write/reindex",
"status": {
"total": 1720111,
"updated": 432,
"created": 469568,
"deleted": 0,
"batches": 48,
"version_conflicts": 0,
"noops": 0,
"retries": 0,
"throttled_millis": 0,
"requests_per_second": "unlimited",
"throttled_until_millis": 0
},
"description": "",
"start_time_in_millis": 1519681855045,
"running_time_in_nanos": 213645628823
},
"5_MeU4OWRJ-dXEgd8TYLsg:17996": {
"node": "5_MeU4OWRJ-dXEgd8TYLsg",
"id": 17996,
"type": "transport",
"action": "indices:data/write/reindex",
"status": {
"total": 1720111,
"updated": 209021,
"created": 979,
"deleted": 0,
"batches": 22,
"version_conflicts": 0,
"noops": 0,
"retries": 0,
"throttled_millis": 0,
"requests_per_second": "unlimited",
"throttled_until_millis": 0
},
"description": "",
"start_time_in_millis": 1519681975056,
"running_time_in_nanos": 93635535622
}
}
}
}
}
```
This task split from 1-2 tasks gets changed to 4-5 tasks and then host crashes.
I also tried changing scroll size to 5000, but reindex still doesn't finish.
Any help would be greatly appreciated.
Thanks,
Ayush
---
### Author:  [@ayushsangani](https://discuss.elastic.co/u/ayushsangani)
#### Post date: [February 28, 2018, 6:56pm UTC](https://discuss.elastic.co/t/re-index-api-creates-multiple-tasks/121571/2 "2018-02-28T18:56:02Z")
@warkolm or @nik9000 any help here will be appreciated.
Thanks!
---
### Author:  [@kahndor](https://discuss.elastic.co/u/kahndor)
#### Post date: [March 21, 2018, 2:41pm UTC](https://discuss.elastic.co/t/re-index-api-creates-multiple-tasks/121571/3 "2018-03-21T14:41:47Z")
I have noticed the same behavior and I am running ES 6.2.2
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [April 18, 2018, 2:42pm UTC](https://discuss.elastic.co/t/re-index-api-creates-multiple-tasks/121571/4 "2018-04-18T14:42:00Z")
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