# Difference between write and index threads

**URL:** https://discuss.elastic.co/t/difference-between-write-and-index-threads/144582
**Category:** Elasticsearch
**Created:** [August 15, 2018, 7:45pm UTC](https://discuss.elastic.co/t/difference-between-write-and-index-threads/144582 "2018-08-15T19:45:31Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![djtecha](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/djtecha/32/54011_2.png) [@djtecha](https://discuss.elastic.co/u/djtecha)
#### Post date: [August 15, 2018, 7:45pm UTC](https://discuss.elastic.co/t/difference-between-write-and-index-threads/144582/1 "2018-08-15T19:45:31Z")

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I know in 6.3 the term bulk threads were re-named to write threads. But looking at the thread\_pool document page I'm a little confused about what the difference is between the index threads and the write threads?

Ref: [https://www.elastic.co/guide/en/elasticsearch/reference/current/modules-threadpool.html](https://www.elastic.co/guide/en/elasticsearch/reference/current/modules-threadpool.html)

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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: [September 12, 2018, 7:53pm UTC](https://discuss.elastic.co/t/difference-between-write-and-index-threads/144582/2 "2018-09-12T19:53:06Z")

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