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[[release_notes_76]]
=== 7.6 Release notes
[discrete]
==== Client
* Support for Elasticsearch version 7.6.
* Last release supporting Ruby 2.4. Ruby 2.4 has reached it's end of life and no more security updates will be provided, users are suggested to update to a newer version of Ruby.
[discrete]
===== API Key Support
The client now supports API Key Authentication, check "Authentication" on the https://github.com/elastic/elasticsearch-ruby/tree/7.x/elasticsearch-transport#authentication[transport README] for information on how to use it.
[discrete]
===== X-Opaque-Id Support
The client now supports identifying running tasks with X-Opaque-Id. Check https://github.com/elastic/elasticsearch-ruby/tree/7.x/elasticsearch-transport#identifying-running-tasks-with-x-opaque-id[transport README] for information on how to use X-Opaque-Id.
[discrete]
===== Faraday migrated to 1.0
We're now using version 1.0 of Faraday:
* The client initializer was modified but this should not disrupt final users at all, check this commit for more information.
* Migrated error checking to remove the deprecated Faraday::Error namespace.
* *This change is not compatible with https://github.com/typhoeus/typhoeus[Typhoeus]*. The latest release is 1.3.1, but it's https://github.com/typhoeus/typhoeus/blob/v1.3.1/lib/typhoeus/adapters/faraday.rb#L100[still using the deprecated `Faraday::Error` namespace]. This has been fixed on master, but the last release was November 6, 2018. Version 1.4.0 should be ok once it's released.
* Note: Faraday 1.0 drops official support for JRuby. It installs fine on the tests we run with JRuby in this repo, but it's something we should pay attention to.
Reference: https://github.com/lostisland/faraday/blob/master/UPGRADING.md[Upgrading - Faraday 1.0]
https://github.com/elastic/elasticsearch-ruby/pull/808[Pull Request]
[discrete]
==== API
[discrete]
===== API Changes:
- `cat.indices`: argument `bytes` options were: `b,k,m,g` and are now `b,k,kb,m,mb,g,gb,t,tb,p,pb`.
- `delete_by_query`: New parameter `analyzer` - The analyzer to use for the query string.
- `indices.put_template`: Removed parameters: `timeout`, `flat_settings`.
- `msearch_template`: New Parameter `ccs_minimize_roundtrips` - Indicates whether network round-trips should be minimized as part of cross-cluster search requests execution.
- `rank_eval`: New parameter `search_type` - Search operation type (options: `query_then_fetch,dfs_query_then_fetch`).
- `search_template`: New parameter `ccs_minimize_roundtrips` - Indicates whether network round-trips should be minimized as part of cross-cluster search requests execution.
[discrete]
===== New API endpoints:
- `get_script_context`
- `get_script_languages`
[discrete]
===== Warnings:
Synced flush is deprecated and will be removed in 8.0.
[discrete]
==== X-Pack
[discrete]
===== New API endpoints:
- `ml/delete_trained_model`
- `ml/explain_data_frame_analytics`
- `ml/get_trained_models`
- `ml/get_trained_models_stats`
- `ml/put_trained_model`
[discrete]
===== API changes:
- `license/get`: Added parameter `accept_enterprise`.
- `ml/delete_data_frame_analytics` Added parameter `force`.
- `monitoring/bulk` - Removed parameter `system_version`.
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