# Updating user defined template in live production enviroment

**URL:** <https://discuss.elastic.co/t/updating-user-defined-template-in-live-production-enviroment/48818>\
**Category:** Elasticsearch\
**Created:** [April 29, 2016, 2:41pm UTC](https://discuss.elastic.co/t/updating-user-defined-template-in-live-production-enviroment/48818 "2016-04-29T14:41:17Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![sharon.c](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/sharon.c/32/16076_2.png) [@sharon.c](https://discuss.elastic.co/u/sharon.c)\
**Post date:** [April 29, 2016, 2:41pm UTC](https://discuss.elastic.co/t/updating-user-defined-template-in-live-production-enviroment/48818/1 "2016-04-29T14:41:17Z")

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In live production environment, I use user defined templates to map data been injected in elasticsearch. If I update the user defined templates, will it interrupt elasticsearch indexing process? Will the new template mapping immediately apply to the data injected after I update the template?

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**Author:** ![rjernst](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/rjernst/32/6363_2.png) [@rjernst](https://discuss.elastic.co/u/rjernst)\
**Post date:** [April 29, 2016, 10:13pm UTC](https://discuss.elastic.co/t/updating-user-defined-template-in-live-production-enviroment/48818/2 "2016-04-29T22:13:18Z")

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Templates are applied when an index is created. Updating a template does not affect any existing index.

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**Author:** ![sharon.c](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/sharon.c/32/16076_2.png) [@sharon.c](https://discuss.elastic.co/u/sharon.c)\
**Post date:** [April 29, 2016, 10:14pm UTC](https://discuss.elastic.co/t/updating-user-defined-template-in-live-production-enviroment/48818/3 "2016-04-29T22:14:05Z")

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Thanks for your prompt reply.

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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:** [July 5, 2017, 10:55pm UTC](https://discuss.elastic.co/t/updating-user-defined-template-in-live-production-enviroment/48818/4 "2017-07-05T22:55:06Z")

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