In Solr 8.x, there have been some notable deprecations in Solr. However, some of them are merely moving elsewhere. Here is the status of some of those efforts:
Component | Status in Solr 8.x | Status in Solr 9.0 | Package Status | Package location | Remarks |
---|---|---|---|---|---|
SolrClient impls that depend on Apache HttpClient | n/a | Use the SolrClient impls based on Jetty HTTP client | |||
Data Import Handler | Deprecated in 8.6 | Community package released | https://github.com/rohitbemax/dataimporthandler | ||
Velocity | Deprecated in 8.4 | Community package released | https://github.com/erikhatcher/solritas | ||
CDCR | Deprecated in 8.6 | No efforts for community package underway yet | TBD | ||
Storing indexes and backups in HDFS | Deprecated in 8.6 | Community package efforts underway | TBD | Some volunteers are already working on this. | |
Autoscaling framework | 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 | No efforts for community package underway yet | TBD | |||
Solr Admin UI | No change in current status | A new admin UI (which can replace current UI, if needed) is being actively worked on | https://github.com/yasa-org/yasa | ||
Runtime lib plugin loading from blob store | NA | NA | Replaced by Package Management System | ||
StatelessScript UpdateProcessor | Did not deprecate | N/A; staying as a 1st party contrib | TBD | This should be extremely easy to package | |
Metrics History | Deprecated in 8.9 |
Check out solr.cool for more plugins and other Solr integrations.