# Right steps for changing Index Mapping

**URL:** <https://discuss.elastic.co/t/right-steps-for-changing-index-mapping/171028>\
**Category:** Elasticsearch\
**Created:** [March 6, 2019, 6:17am UTC](https://discuss.elastic.co/t/right-steps-for-changing-index-mapping/171028 "2019-03-06T06:17:13Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![examin](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/examin/32/70688_2.png) [@examin](https://discuss.elastic.co/u/examin)\
**Post date:** [March 6, 2019, 6:17am UTC](https://discuss.elastic.co/t/right-steps-for-changing-index-mapping/171028/1 "2019-03-06T06:17:13Z")

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Yes i know if i have to change a index's mapping, i have to reindex it. I want to do this process quickly as possible , So what will you suggest steps for reindexing.

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**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\
**Post date:** [March 6, 2019, 6:29am UTC](https://discuss.elastic.co/t/right-steps-for-changing-index-mapping/171028/2 "2019-03-06T06:29:52Z")

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Create a new index with the mapping  
Call reindex API  
If you have an alias, switch the alias  
Delete the old index

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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 3, 2019, 6:41am UTC](https://discuss.elastic.co/t/right-steps-for-changing-index-mapping/171028/3 "2019-04-03T06:41:36Z")

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Closed on April 3, 2019, 6:41am UTC

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