# Compare es version 1.7.1 with .5.51

**URL:** https://discuss.elastic.co/t/compare-es-version-1-7-1-with-5-51/96843
**Category:** Elasticsearch
**Created:** [August 12, 2017, 2:29pm UTC](https://discuss.elastic.co/t/compare-es-version-1-7-1-with-5-51/96843 "2017-08-12T14:29:18Z")
**Posts on this page:** 3
**Page:** 1

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### Author: ![yaoqijun](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/yaoqijun/32/32028_2.png) [@yaoqijun](https://discuss.elastic.co/u/yaoqijun)
#### Post date: [August 12, 2017, 2:29pm UTC](https://discuss.elastic.co/t/compare-es-version-1-7-1-with-5-51/96843/1 "2017-08-12T14:29:18Z")

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i user 1.7.1 version elastic, now i want to 1.5 version.  
i download 1.7. and 5.5.1 version, and execute in single.  
in one second, 1.7 has 356260 success post. but 5.5.1 only have 63183 success post.

is has different default config param between 1.7 and 5.5.1， it make me confuse.

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<div class="post-metadata">

### Author: ![yaoqijun](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/yaoqijun/32/32028_2.png) [@yaoqijun](https://discuss.elastic.co/u/yaoqijun)
#### Post date: [August 14, 2017, 1:56am UTC](https://discuss.elastic.co/t/compare-es-version-1-7-1-with-5-51/96843/2 "2017-08-14T01:56:46Z")

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plus 1

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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: [September 11, 2017, 1:57am UTC](https://discuss.elastic.co/t/compare-es-version-1-7-1-with-5-51/96843/3 "2017-09-11T01:57:00Z")

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