Major changes between Elasticsearch 1.7.x and 2.3.x

Elastic Stack Elasticsearch
1

I am working on a team that is evaluating the upgrade from 1.7.x to 2.3.x. Other than stepping through the release notes is there any other way to pinpoint the largest changes/improvements between these versions? Specifically I am looking for what are the pros/cons of upgrading. We have a very large set of indexes each with millions of records.

2

There's no single page, no.

What is your use case?

3

There's no page I'm aware of that lists largest new features by version. However there's two pages that might help you nonetheless:

https://www.elastic.co/guide/en/elasticsearch/resiliency/current/index.html gives you an overview of what happened between your version and 2.3 wrt. stability/resiliency.

For identifying things that will break on upgrade there is https://www.elastic.co/guide/en/elasticsearch/reference/current/breaking-changes.html

4

Nope...no single page. I have been stepping through all of the release notes from versions put out after 1.7.x but it has been quite the task.

5

Thanks for the resources. I have been stepping through the release notes and the breaking changes pages for all the versions leading up to the current version. It would be nice if there was a feature matrix somewhere that would show features and what version they are available in as a high level way of looking at it.

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6

Hello,

It would be great if it's possible ! I'am evaluating the upgrade form 1.7.5 to 2.3.2, for millions of documents too.