THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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Minimum Java version supported: Java 11
- Powered by Lucene 9.0, bringing in new analyzers and better space efficiency of postings
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- with numerous small and large improvements, such as smaller index footpring
Querying and Indexing
- Dense Vector "Neural" Search through DenseVectorField fieldType and K-Nearest-Neighbor (KNN) Query Parser
- Admin UI support for SQL Querying
- New snowball stemmers: Hindi, Indonesian, Nepali, Serbian, Tamil and Yiddish
- New NorwegianNormalizationFilter
Security
- Certificate Authentication Plugin, enabling end-to-end use of x509 client certificates for Authentication and Authorization
- Improved security when using PKI Authentication plugin
- Upgrade to Zookeeper 3.7, allowing for TLS protected ZK communication
- All request handlers support security permissions for access
- Ability to disable admin UI through a system property
- The property blockUnknown in the BasicAuthPlugin and the JWTAuthPlugin now defaults to true instead of false
- Solr now runs with the Java security manager enabled by default. Hadoop users may need to disable this
- Solr embedded zookeeper only binds to localhost by default. See Upgrade Notes for how to obtain old behavior
- Dependency updates - A lot of dependency updates make Solr overall much more secure
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- The Data Import Handler (DIH) is an independent project now; it is no longer a part of Solr
- No more support for clusterstate.json and MIGRATESTATE API has been removed. If your collections use clusterstate.json, please refer to the Upgrade Notes
- Auto scaling framework has been removed. Please refer to replica placement plugins for alternate options
- LegacyBM25SimilarityFactory has been removed
- VelocityResponseWriter is an independent project now; it is no longer a part of Solr. This encompasses all previously included /browse and wt=velocity examples
- Legacy SolrCache implementations (LRUCache, LFUCache, FastLRUCache) have been removed. Users have to modify their existing configurations to not mention the class in order to get the default
- Cross Data Center Replication has been removed
- SolrJ clients like HttpSolrClient and LBHttpSolrClient that lacked HTTP2 support have been deprecated. The old CloudSolrClient has been renamed as CloudLegacySolrClient and deprecated
- SimpleFSDirectoryFactory is removed in favor of NIOFSDirectoryFactory