# High number of refresh threads
**URL:** https://discuss.elastic.co/t/high-number-of-refresh-threads/216135
**Category:** Elasticsearch
**Created:** [January 22, 2020, 9:05pm UTC](https://discuss.elastic.co/t/high-number-of-refresh-threads/216135 "2020-01-22T21:05:59Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@Christophe\_Journel](https://discuss.elastic.co/u/Christophe_Journel)
#### Post date: [January 22, 2020, 9:06pm UTC](https://discuss.elastic.co/t/high-number-of-refresh-threads/216135/1 "2020-01-22T21:06:00Z")
Hello,
Here is the result of
GET /\_cat/thread\_pool/refresh/?v
node\_name name active queue rejected
node-5203 refresh 0 0 0
node-5202 refresh 10 13676 0
node-5206 refresh 0 0 0
node-5201 refresh 10 75341 0
node-5205 refresh 1 0 0
node-5204 refresh 10 3494 0
I have 6 nodes, and some of them have a huge number of refresh in queue.
How can i get rid of them ?
I already change the refresh\_interval from 10s to 60s, but i guess refresh in queue are now useless. is there a way to delete them ?
Thanks
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### Author:  [@DeeeFOX](https://discuss.elastic.co/u/DeeeFOX)
#### Post date: [January 23, 2020, 5:47am UTC](https://discuss.elastic.co/t/high-number-of-refresh-threads/216135/2 "2020-01-23T05:47:05Z")
Does the system load avg high in the nodes?
And How the io util grows to each node when this happen?
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### Author:  [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)
#### Post date: [January 23, 2020, 6:25am UTC](https://discuss.elastic.co/t/high-number-of-refresh-threads/216135/3 "2020-01-23T06:25:14Z")
What type of storage do you have? Local SSDs? Are all nodes the same specification? Do you have any indices on these nodes for which you perform a lot of updates and/or use a lot of nested documents?
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### Author:  [@Christophe\_Journel](https://discuss.elastic.co/u/Christophe_Journel)
#### Post date: [January 27, 2020, 2:11pm UTC](https://discuss.elastic.co/t/high-number-of-refresh-threads/216135/4 "2020-01-27T14:11:02Z")
Hello.
Figured it out. A huge number of Spark threads updating the same document with a refresh\_interval set to 1sec... This was a misconfiguration where the elasticsearch document\_id was supposed to be different. Therefore instead of creating a huge number of different douments in ES, the cluster tried to update only one.
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [February 24, 2020, 2:11pm UTC](https://discuss.elastic.co/t/high-number-of-refresh-threads/216135/5 "2020-02-24T14:11:06Z")
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