Here is a list of deprecations in Solr:

ComponentDeprecated in versionJIRARemoval statusPackage StatusPackage locationRemarks
Jaegertracer moduleDeprecated in 9.2

Planned for 10.0

(N/A, superceded by OTEL module)

Analytics moduleDeprecated in 9.2

Planned for 10.0

Not planned

SolrClient impls that depend on Apache HttpClient

Deprecate:

WIP

n/a
Use the SolrClient impls based on Jetty HTTP client
Data Import HandlerDeprecated in 8.6

Removed in 9.0

Community package releasedhttps://github.com/rohitbemax/dataimporthandler
VelocityDeprecated in 8.4

Removed in 9.0

Community package releasedhttps://github.com/erikhatcher/solritas
CDCRDeprecated in 8.6

Removed in 9.0

No efforts for community package underway yetTBD
Storing indexes and backups in HDFSDeprecated in 8.6


Community package efforts underwayTBDSome volunteers are already working on this.
Autoscaling framework

Removed in:

Removed in 9.0

Autoscaling framework has been replaced with a new plugin for replica placement only. Some aspects of the original framework are not replaced at all at this time (but may be in the future). n/a
Tika / SolrCell

Under discussion: 



No efforts for community package underway yetTBD
Solr Admin UI (Angular 1)

Not plannedSTALLED A new admin UI (which can replace current UI, if needed) is being actively worked onhttps://github.com/yasa-org/yasa
Runtime lib plugin loading from blob store


NANAReplaced by Package Management System
StatelessScript UpdateProcessor

Did not deprecate

Moved to new "scripting" contrib:


N/A; staying as a 1st party contribTBDThis should be extremely easy to package
Metrics HistoryDeprecated in 8.9

Removed in 


No efforts for community package are underwayn/a


Check out solr.cool for more plugins and other Solr integrations.