# Coordinator thread pool

**URL:** <https://discuss.elastic.co/t/coordinator-thread-pool/170759>\
**Category:** Elasticsearch\
**Created:** [March 4, 2019, 4:02pm UTC](https://discuss.elastic.co/t/coordinator-thread-pool/170759 "2019-03-04T16:02:46Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![jonathan\_rowe](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/jonathan_rowe/32/49275_2.png) [@jonathan\_rowe](https://discuss.elastic.co/u/jonathan_rowe)\
**Post date:** [March 4, 2019, 4:02pm UTC](https://discuss.elastic.co/t/coordinator-thread-pool/170759/1 "2019-03-04T16:02:46Z")

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Hiya

I have configured some coordinator nodes in a large 5.2.2 cluster, can someone please tell me which thread pool coordination activities use?

thanks

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**Author:** ![DavidTurner](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/davidturner/32/22453_2.png) [@DavidTurner](https://discuss.elastic.co/u/DavidTurner)\
**Post date:** [March 4, 2019, 6:45pm UTC](https://discuss.elastic.co/t/coordinator-thread-pool/170759/2 "2019-03-04T18:45:37Z")

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The coordinator nodes use the usual [collection of various thread pools](https://www.elastic.co/guide/en/elasticsearch/reference/5.2/modules-threadpool.html) for their activities. So searches are coordinated on the `search` threadpool, indexing is coordinated on the `index` or `bulk` threadpools, etc.

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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:** [April 1, 2019, 6:45pm UTC](https://discuss.elastic.co/t/coordinator-thread-pool/170759/3 "2019-04-01T18:45:40Z")

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