# Discussion on Migration 2.x to 5.x

**URL:** <https://discuss.elastic.co/t/discussion-on-migration-2-x-to-5-x/168224>\
**Category:** Elasticsearch\
**Created:** [February 13, 2019, 1:03pm UTC](https://discuss.elastic.co/t/discussion-on-migration-2-x-to-5-x/168224 "2019-02-13T13:03:23Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![EliuFlorez](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/eliuflorez/32/40884_2.png) [@EliuFlorez](https://discuss.elastic.co/u/EliuFlorez)\
**Post date:** [February 13, 2019, 1:03pm UTC](https://discuss.elastic.co/t/discussion-on-migration-2-x-to-5-x/168224/1 "2019-02-13T13:03:23Z")

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#Inglesh  
What differences or improvements can I get to migrate ElasticSearch 2.x to 5.x. Since I need to optimize my queries with more than 1 million records. It will be that my documents or query is wrong or due to the ElasticSearch version.

#Spainsh  
Que diferencias o mejoras puedo obtener a migra ElasticSearch 2.x a 5.x. Ya que requiero optimizar mis consultas con mas de 1 millon de registros. Sera que mis documentos o query esta mal o se debe a la version de ElasticSearch.

Venezuelan from Mexico.

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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:** [March 13, 2019, 1:03pm UTC](https://discuss.elastic.co/t/discussion-on-migration-2-x-to-5-x/168224/2 "2019-03-13T13:03:26Z")

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