# Throttled merge
**URL:** https://discuss.elastic.co/t/throttled-merge/314963
**Category:** Elasticsearch
**Created:** [September 22, 2022, 4:39pm UTC](https://discuss.elastic.co/t/throttled-merge/314963 "2022-09-22T16:39:42Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@Ariel\_Zach](https://discuss.elastic.co/u/Ariel_Zach)
#### Post date: [September 22, 2022, 4:39pm UTC](https://discuss.elastic.co/t/throttled-merge/314963/1 "2022-09-22T16:39:42Z")
Hello,
Currently we have an index of 33TB (ES 7.8), 48 shards (16 primary, 32 replicas), two months ago we deleted a lot of documents and we noticed that one of the shards (the primary and the 2 replicas) has a very large size (5TB), looking at the detail of the index I notice that the merge has not been executed for 57 days:
```auto
"merges": {
"current": 0,
"current_docs": 0,
"current_size": "0b",
"current_size_in_bytes": 0,
"total": 4203366,
"total_time": "96.1d",
"total_time_in_millis": 8311549584,
"total_docs": 15152680627,
"total_size": "48.6tb",
"total_size_in_bytes": 53517052444064,
"total_stopped_time": "0s",
"total_stopped_time_in_millis": 0,
"total_throttled_time": "57.2d",
"total_throttled_time_in_millis": 4942382248,
"total_auto_throttle": "5mb",
"total_auto_throttle_in_bytes": 5242880
Config:
"index.merge.policy.reclaim_deletes_weight": "2.0",
"index.merge.scheduler.max_merge_count": "5",
"index.merge.scheduler.max_thread_count": "2",
"index.merge.policy.deletes_pct_allowed": "33.0",
"index.merge.policy.expunge_deletes_allowed": "10.0",
"index.merge.policy.floor_segment": "2mb",
"index.merge.policy.max_merge_at_once": "10",
"index.merge.policy.max_merge_at_once_explicit": "30",
"index.merge.policy.max_merged_segment": "5gb",
"index.merge.policy.segments_per_tier": "10.0",
"index.merge.scheduler.auto_throttle": "true",
```
The idea is not to force a merge, why is the merge not being executed in Elastic?
---
### Author:  [@warkolm](https://discuss.elastic.co/u/warkolm)
#### Post date: [September 23, 2022, 3:06am UTC](https://discuss.elastic.co/t/throttled-merge/314963/2 "2022-09-23T03:06:24Z")
> [@Ariel\_Zach](#):
>
> ES 7.8
This is [EOL](https://www.elastic.co/support/eol), please upgrade as a matter of urgency as latest 7.X is 7.17 so you are a fair bit behind. I would definitely start there before digging further.
---
### Author:  [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)
#### Post date: [September 23, 2022, 6:30am UTC](https://discuss.elastic.co/t/throttled-merge/314963/3 "2022-09-23T06:30:08Z")
> [@Ariel\_Zach](#):
>
> ```auto
> Config:
>
> "index.merge.policy.reclaim_deletes_weight": "2.0",
> "index.merge.scheduler.max_merge_count": "5",
> "index.merge.scheduler.max_thread_count": "2",
> "index.merge.policy.deletes_pct_allowed": "33.0",
> "index.merge.policy.expunge_deletes_allowed": "10.0",
> "index.merge.policy.floor_segment": "2mb",
> "index.merge.policy.max_merge_at_once": "10",
> "index.merge.policy.max_merge_at_once_explicit": "30",
> "index.merge.policy.max_merged_segment": "5gb",
> "index.merge.policy.segments_per_tier": "10.0",
> "index.merge.scheduler.auto_throttle": "true",
>
> ```
It looks like you have overridden the default settings. How did you arrive at these configs? What happens if you revert to the defaults?
---
### Author:  [@Ariel\_Zach](https://discuss.elastic.co/u/Ariel_Zach)
#### Post date: [September 23, 2022, 12:47pm UTC](https://discuss.elastic.co/t/throttled-merge/314963/4 "2022-09-23T12:47:18Z")
Hi Christian, this is the default configuration, we do not modify it when creating the index.
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [October 21, 2022, 12:47pm UTC](https://discuss.elastic.co/t/throttled-merge/314963/5 "2022-10-21T12:47:45Z")
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