# Need info on these thread pool types

**URL:** <https://discuss.elastic.co/t/need-info-on-these-thread-pool-types/131937>\
**Category:** Elasticsearch\
**Created:** [May 15, 2018, 12:54pm UTC](https://discuss.elastic.co/t/need-info-on-these-thread-pool-types/131937 "2018-05-15T12:54:28Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![pokaleshrey](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/pokaleshrey/32/48680_2.png) [@pokaleshrey](https://discuss.elastic.co/u/pokaleshrey)\
**Post date:** [May 15, 2018, 12:54pm UTC](https://discuss.elastic.co/t/need-info-on-these-thread-pool-types/131937/1 "2018-05-15T12:54:28Z")

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I am having a setup with one master node and 2 data nodes.  
I have my web application sending many search requests to the master node.  
**Query:**  
When i monitor thread dump of my data nodes. I am not able to figure out what are the below threads doing:

1. transport\_server\_worker.default
2. transport\_client\_boss

The above threads are always in RUNNABLE state. I wonder what they are doing, even when there is no query on ES.

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [June 12, 2018, 12:54pm UTC](https://discuss.elastic.co/t/need-info-on-these-thread-pool-types/131937/2 "2018-06-12T12:54:30Z")

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Closed on June 12, 2018, 12:54pm UTC

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