22 Feb 2021, Apache Solr™ 8.8.1 available
The Lucene PMC is pleased to announce the release of Apache Solr 8.8.1
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 and analytics, rich document parsing, geospatial search, extensive REST APIs as well as parallel SQL. Solr is enterprise grade, secure and 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.
The release is available for immediate download at:
https://lucene.apache.org/solr/downloads.html
Please read CHANGES.txt for a detailed list of changes:
https://lucene.apache.org/solr/8_8_1/changes/Changes.html
Solr 8.8.1 Release Highlights
SOLR-15145: The base_url property was removed from stored replica state in ZK in 8.8.0, which caused older versions of SolrJ (pre-8.8.0) hit a NullPointerException when computing the base_url for core node props read directly from Zookeeper. This also caused temporary issues while performing a rolling upgrade of Solr nodes from pre-8.8.0 to 8.8.0. Solr 8.8.1 restores the base_url property so that older SolrJ clients will work with 8.8.1 servers. This behavior is now guarded with a Java system property solr.storeBaseUrl which defaults to true in Solr 8.8.1 (and for the rest of the 8.x line). This property will default to false in Solr 9.x, resulting in the base_url not being stored in replica state.
SOLR-15114: Fix bug that caused WAND optimization to be disabled in cases where the max score is requested (such as multi-shard requests in SolrCloud)
A summary of important changes is published in the Solr Reference Guide at https://lucene.apache.org/solr/guide/8_8/solr-upgrade-notes.html. For the most exhaustive list, see the full release notes at https://lucene.apache.org/solr/8_8_1/changes/Changes.html or by viewing the CHANGES.txt file accompanying the distribution. Solr's release notes usually don't include Lucene layer changes. Lucene's release notes are at https://lucene.apache.org/core/8_8_1/changes/Changes.html