# Upgrading Elasticsearch from 1.3.7 to 7.3.2

**URL:** <https://discuss.elastic.co/t/upgrading-elasticsearch-from-1-3-7-to-7-3-2/200602>\
**Category:** Elasticsearch\
**Created:** [September 22, 2019, 6:08pm UTC](https://discuss.elastic.co/t/upgrading-elasticsearch-from-1-3-7-to-7-3-2/200602 "2019-09-22T18:08:48Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![Siva\_Karan](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/siva_karan/32/54688_2.png) [@Siva\_Karan](https://discuss.elastic.co/u/Siva_Karan)\
**Post date:** [September 22, 2019, 6:08pm UTC](https://discuss.elastic.co/t/upgrading-elasticsearch-from-1-3-7-to-7-3-2/200602/1 "2019-09-22T18:08:48Z")

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Hi,

Is this any risk if we upgrading elasticsearch from 1.3.7 to 7.3.2 using **Reindex API**

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**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\
**Post date:** [September 22, 2019, 6:11pm UTC](https://discuss.elastic.co/t/upgrading-elasticsearch-from-1-3-7-to-7-3-2/200602/2 "2019-09-22T18:11:10Z")

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You will need to update/create mappings/index templates before using [reindex from remote](https://www.elastic.co/guide/en/elasticsearch/reference/current/reindex-upgrade-remote.html) to copy data from the 1.3.7 cluster to the 7.3.2 one. Am not sure it will work against such an old version but it is worth trying.

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**Author:** ![Siva\_Karan](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/siva_karan/32/54688_2.png) [@Siva\_Karan](https://discuss.elastic.co/u/Siva_Karan)\
**Post date:** [September 22, 2019, 6:43pm UTC](https://discuss.elastic.co/t/upgrading-elasticsearch-from-1-3-7-to-7-3-2/200602/3 "2019-09-22T18:43:03Z")

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Thanks @Christian_Dahlqvist

Is this possible? what are the impacts may get while doing this up-gradation process.

what are the things need to done before up-gradation.

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**Author:** ![Christian\_Dahlqvist](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/christian_dahlqvist/32/4617_2.png) [@Christian\_Dahlqvist](https://discuss.elastic.co/u/Christian_Dahlqvist)\
**Post date:** [September 22, 2019, 6:46pm UTC](https://discuss.elastic.co/t/upgrading-elasticsearch-from-1-3-7-to-7-3-2/200602/4 "2019-09-22T18:46:32Z")

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I have never tried upgrading with such a gap in versions and know nothing about your use case, so it is hard to tell. You basically need to reindex your data into a new one from the old one. Depending on which features you use the change to mappings and index templates may range from reasonably simple to quite complex.

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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:** [October 20, 2019, 6:46pm UTC](https://discuss.elastic.co/t/upgrading-elasticsearch-from-1-3-7-to-7-3-2/200602/5 "2019-10-20T18:46:33Z")

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