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commit 7c811e2f4f48fcc68e7e39f879af4e986003571f Author: Andrzej Białecki <[email protected]> AuthorDate: Fri Oct 30 09:19:52 2026 +0100 Adding Solr news for release 10.1.0 --- .../solr/solr_news/2026-10-27-10-1-0-available.md | 72 ++++++++++++++++++++++ 1 file changed, 72 insertions(+) diff --git a/content/solr/solr_news/2026-10-27-10-1-0-available.md b/content/solr/solr_news/2026-10-27-10-1-0-available.md new file mode 100644 index 000000000..809b1cf81 --- /dev/null +++ b/content/solr/solr_news/2026-10-27-10-1-0-available.md @@ -0,0 +1,72 @@ +Title: Apache Solr™ 10.1.0 available +category: solr/news +save_as: + +The Solr PMC is pleased to announce the release of Apache Solr 10.1.0. + +Solr is the blazing-fast, open source, multi-modal search platform built on Apache Lucene. It powers full-text, vector, analytics, and geospatial search at many of the world's largest organizations. Other major features include Kubernetes and docker integration, streaming, highlighting, faceting, and spellchecking. + +Solr 10.1.0 is available for immediate download at: + + <https://solr.apache.org/downloads.html> + +## Solr 10.1.0 Release Highlights: + +- Minimum Java version: **Java 21** for Solr server, **Java 17** for SolrJ +- Powered by **Lucene 10.4**, with numerous small and large improvements. (<https://lucene.apache.org/core/10_4_0/index.html>) +- Jetty 12 / Jakarta EE 10 +- Numerous dependency upgrades across the release, including Kafka and the OpenTelemetry/Prometheus stack. +- Docker: official images use Java 25 and Ubuntu 24 (Noble Numbat) + +### Querying and Indexing + +- New range field types (Int/Long/Float/DoubleRangeField) with an experimental numericRange parser and docValues filter optimization; plus expanded join parsers (auxIndexJoin, globalOrdinalsJoin, join) and a new Intervals Query Parser. +- New CombinedQuerySearchHandler for hybrid search via reciprocal rank fusion (RRF), with collapse/Query Elevation support and a new reRankCutoff field; streaming expressions' rollup function gained new aggregate metrics and a path parameter. +- Nested vector search support (best-child retrieval diversified by parent, multi-valued dense vectors), a new late-interaction reranking field type, a knnAlgorithm="flat" option to skip HNSW for exact search, and vector existence queries; fixed GPU vector indexing silently falling back to CPU. +- New DocumentEnrichmentUpdateProcessorFactory for LLM-based document enrichment at index time. +- SPLITSHARD now supports router.field routing on docValues fields; Export Writer can include stored fields in its output; fixed a disk space check bug in shard splitting. +- Fixed several query correctness bugs: shards.preference ignored on cross-collection joins, incorrect rerank+sort combinations, join queries combined with query limits, complement()/intersect() streaming expressions returning wrong results, and NOT expressions requiring an explicit *:*. + +### Major changes + +- OTLP metric export now uses dot-separated OTel metric names — a back-compat break from 10.0. +- MemoryCircuitBreaker now measures post-GC live heap data instead of a moving average — a breaking API change. +- Removed support for PKI Authentication v1 and the experimental solr.api.v2.enabled property. + +- JWT Authentication's blockUnknown now defaults to true, blocking unauthenticated requests by default — a breaking change for setups relying on pass-through auth. +- SolrCloud requests are now authorized against the collection of the core actually serving them, not the "collection" request parameter. +- New solrConnection-based HTTP connection support lets cross-collection joins, streaming expressions, the SQL JDBC driver, CloudSolrClient, and CLI tools reach SolrCloud over HTTP(S) without direct ZooKeeper access; a new allowZkHosts setting restricts which connection strings such features may use. + +### SolrJ + +- New v2 APIs and matching SolrJ classes: System Info, collection-properties, node healthcheck/properties, and JAX-RS-based ListTasks/TaskStatus/cluster command-status APIs. +- New unified HttpSolrClient base class, implemented by both Jetty- and JDK-HttpClient-based SolrClients (builder prefers Jetty, falls back to JDK). +- HttpJettySolrClient/HttpJdkSolrClient thread-pool defaults changed (no longer forces 32 threads or caps at 256), plus multiple reliability fixes (connection-loss handling, thread leaks, semaphore leaks, a rare deadlock). +- New ConcurrentUpdateJdkSolrClient; ConcurrentUpdateSolrClient can now report which documents in a batch failed to reach the server via a registered error handler. +- Optimized the JavaBin codec's internal buffer sizing to cut GC pressure on SolrJ clients under heavy indexing load. +- Fixed SolrJ's local-parameter-value encoding producing lossy/invalid output with backslashes or leading quotes, affecting facet response keys and SQL LIKE queries; published POMs now include resolved dependency versions. + +### Other + +- SolrCloud operational improvements: a new setting to clean up unknown core data on creation, reduced ZooKeeper calls during distributed multi-collection search, state.json compression when the Overseer is disabled, and locked Admin APIs can now call each other within the same resource tree. +- Fixed several SolrCloud reliability bugs: CloudSolrClient deleteById/state-refresh issues, ZkController over-reacting to ZooKeeper reconnects, HttpShardHandler concurrency bugs causing hangs or 500s, PRS-based collection creation returning too early, and Balance Replicas now enforcing one replica per shard per node. +- Leader/follower replication now restarts using the latest index generation if the selected generation expires mid-download; readOnly collections and schema-change handling during concurrent requests were also made more robust. +- New jvm_system_memory_bytes metric; fixed several metrics/OpenTelemetry bugs including a memory leak from retained SolrIndexSearcher metric gauges and a race condition in CircuitBreaker registration; the release also includes numerous dependency upgrades, such as Lucene 10.4, Jetty, Kafka, and the OpenTelemetry/Prometheus stack. +- CoreAdmin API gained an UPGRADECOREINDEX action to upgrade an index in place; the CLI's configset upload no longer blocks certain file types. +- CrossDC gained Kafka property flexibility, Prometheus metrics, and a health endpoint, plus fixes for out-of-order partition processing, incorrect offset commits, and other reliability issues. + +### Deprecations and Removals + +- Deprecated the SolrStream "core URL" constructors, the PingRequestHandler/SolrPing family (the ping endpoint), and the Overseer ADDROLE/REMOVEROLE operations. +- Removed deprecated LocalSolrQueryRequest, CloudSolrClient.connect()/connect(long, TimeUnit), and ClusterStateProvider.connect(). +- Removed the deprecated geohash()/ghhsin() function queries and old pre-QueryCommand SolrIndexSearcher search methods. +- Removed the old streamFunctions mechanism in GraphHandler for registering streaming expressions, and a broken disk-space optimization used during full-recovery. +- Removed deprecated http.status_code/http.method telemetry tags and Request ID based tracing. + +Please refer to the Upgrade Notes in the Solr Ref Guide for information on upgrading from previous Solr versions: + + <https://solr.apache.org/guide/solr/10_1/upgrade-notes/solr-upgrade-notes.html> + +Please read CHANGELOG.md for a full list of new features, changes and bugfixes: + + <https://solr.apache.org/10_1_0/changes/Changes.html>
