Dear Solr Users, In this release (Solr 8.6), we have deprecated the following:
1. Data Import Handler 2. HDFS support 3. Cross Data Center Replication (CDCR) All of these are scheduled to be removed in a future 9.x release. It was decided that these components did not meet the standards of quality and support that we wish to ensure for all components we ship. Some of these also relied on design patterns that we no longer recommend for use in critical production environments. If you rely on these features, you are encouraged to try out community supported versions of these, where available [0]. Where such community support is not available, we encourage you to participate in the migration of these components into community supported packages and help continue the development. We envision that using packages for these components via package manager will actually make it easier for users to use such features. Regards, Ishan Chattopadhyaya (On behalf of the Apache Lucene/Solr PMC) [0] - https://cwiki.apache.org/confluence/display/SOLR/Community+supported+packages+for+Solr On Wed, Jul 15, 2020 at 2:30 PM Bruno Roustant <bruno.roust...@gmail.com> wrote: > The Lucene PMC is pleased to announce the release of Apache Solr 8.6.0. > > > Solr is the popular, blazing fast, open source NoSQL search platform from > the Apache Lucene project. Its major features include powerful full-text > search, hit highlighting, faceted search, dynamic clustering, database > integration, rich document handling, and geospatial search. Solr is highly > scalable, providing fault tolerant distributed search and indexing, and > powers the search and navigation features of many of the world's largest > internet sites. > > > Solr 8.6.0 is available for immediate download at: > > > <https://lucene.apache.org/solr/downloads.html> > > > ### Solr 8.6.0 Release Highlights: > > > * Cross-Collection Join Queries: Join queries can now work > cross-collection, even when shared or when spanning nodes. > > * Search: Performance improvement for some types of queries when exact > hit count isn't needed by using BlockMax WAND algorithm. > > * Streaming Expression: Percentiles and standard deviation aggregations > added to stats, facet and time series. Streaming expressions added to > /export handler. Drill Streaming Expression for efficient and accurate > high cardinality aggregation. > > * Package manager: Support for cluster (CoreContainer) level plugins. > > * Health Check: HealthCheckHandler can now require that all cores are > healthy before returning OK. > > * Zookeeper read API: A read API at /api/cluster/zk/* to fetch raw ZK > data and view contents of a ZK directory. > > * Admin UI: New panel with security info in admin UI's dashboard. > > * Query DSL: Support for {param:ref} and {bool: {excludeTags:""}} > > * Ref Guide: Major redesign of Solr's documentation. > > > Please read CHANGES.txt for a full list of new features and changes: > > > <https://lucene.apache.org/solr/8_6_0/changes/Changes.html> > > > Solr 8.6.0 also includes features, optimizations and bugfixes in the > corresponding Apache Lucene release: > > > <https://lucene.apache.org/core/8_6_0/changes/Changes.html> > > > Note: The Apache Software Foundation uses an extensive mirroring network > for > > distributing releases. It is possible that the mirror you are using may > not have > > replicated the release yet. If that is the case, please try another mirror. > > This also applies to Maven access. >
