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Elasticsearch version 7.16.2

Also see Breaking changes in 7.16.

Enhancements

Other

Add deprecation notices for boost mappings to API #81605 (issue: #78396)

Packaging

Improve Docker image’s cacert scripting #81659

Bug fixes

Authorization

Add delete privilege to kibana_system for APM and Endpoint ILM policies #81811

Infra/Logging

Add doPrivileged section in deprecation logger #81819 (issue: #81708)

Java High Level REST Client

Change HLRC’s LifecyclePolicy to allow all valid ILM actions #81483 (issue: #81461)

Machine Learning

Fix LangIdent model when multiple unicode scripts are present #81876 (issue: #80675)
Model snapshot upgrade needs a stats endpoint #81641 (issue: #81519)

Packaging

Change default shell to bash in default Docker image #81828 (issue: #80820)

Regressions

Infra/Scripting

Fix superclass functional interface resolution in Painless #81698 (issue: #81696)

Upgrades

Infra/Logging

Upgrade to log4j 2.17.0 #81902

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https://www.elastic.co/guide/en/elasticsearch/reference/7.17/release-notes-7.16.2.html