Apache Solr 5.4.0 发布，全文搜索服务器

Apache Solr 5.4.0 发布，现已提供下载：

http://lucene.apache.org/solr/mirrors-solr-latest-redir.html

更新日志：

https://lucene.apache.org/solr/5_4_0/changes/Changes.html

Solr 5.4 值得关注的改进

新特性

UI 改进

The re-architected Admin UI is now prominently linked to from theexisting UI, and includes support for managing collections as well

as creating and removing fields via the schema tab. Expect it to be default in the next release.

API 特性

New Collections APIs for migrating from clusterstate.json to per-collection state.json and forcing the election of a leader

when all replicas in a shard are down.

A new configset management API has been added.

查询特性

Filter cache is now accessible via a solr query syntax.ScoreJoins can now refer to a single-sharded collection that isreplicated on all nodes.Add boost support, and 'exclude the queried document' in MoreLikeThisQParser.Add a 'sort' local param to the collapse QParser to support usingcomplex sort options to select the representitive doc for each

collapsed group.

其他特性

SolrJ now has support for connecting to Solr using basic authentication.Analyzing suggesters can now filter suggestions by a context field.JSON Facet API: add "method" param to terms/field facets to give anexecution hint for what method should be used to facet.CloneFieldUpdateProcessorFactory now supports choosing a "dest" fieldname based on a regex pattern and replacement init options.Provide pluggable context tool support for VelocityResponseWriter.

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