Page History

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• Rate limiting provides a way to throttle update and search requests based on usage metrics.
• Task management interface allows declaring tasks as cancellable and trackable.
• Ability to specify node roles in Solr. This release supports 'Overseer' and 'Data' roles out of the box.
• New API for pluggable replica assignment implementations that replaces the auto-scaling framework.
• An option to enable distributed processing of cluster state updates and Collection and Config API call processing without relying on the Overseer.

Build

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and Docker

• Solr is now built and released independently from Lucene (separate Apache projects)
• Build system switched to Gradle, no longer uses Ant + Ivy
• Docker image creation is now a part of the Apache Solr Github repo
• Docker image documentation is now a part of the reference guide
• Official Docker image upgraded to use JDK17 (by Eclipse Temurin) and ability to create functionally identical local image

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