# Question about non-dynamic settings

**URL:** <https://discuss.elastic.co/t/question-about-non-dynamic-settings/104739>\
**Category:** Elasticsearch\
**Created:** [October 20, 2017, 4:44pm UTC](https://discuss.elastic.co/t/question-about-non-dynamic-settings/104739 "2017-10-20T16:44:53Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Michael\_Perez](https://avatars.discourse-cdn.com/v4/letter/m/b3f665/32.png) [@Michael\_Perez](https://discuss.elastic.co/u/Michael_Perez)\
**Post date:** [October 20, 2017, 4:44pm UTC](https://discuss.elastic.co/t/question-about-non-dynamic-settings/104739/1 "2017-10-20T16:44:53Z")

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Hi,

I wanted to know the reason why changing the analysis settings requires the index to be closed and opened?

Thanks.

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**Author:** ![Igor\_Motov](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/igor_motov/32/45193_2.png) [@Igor\_Motov](https://discuss.elastic.co/u/Igor_Motov)\
**Post date:** [October 22, 2017, 1:23pm UTC](https://discuss.elastic.co/t/question-about-non-dynamic-settings/104739/2 "2017-10-22T13:23:24Z")

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Mainly for the sake of simplicity. The analysis chain is created when index gets open and remains immutable while the index remains open. So, we can create it once when we open the index and not worry about keeping it in-sync with the cluster state in case it gets updated.

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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:** [November 19, 2017, 1:29pm UTC](https://discuss.elastic.co/t/question-about-non-dynamic-settings/104739/3 "2017-11-19T13:29:23Z")

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Closed on November 19, 2017, 1:29pm UTC

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