{"id":638,"date":"2014-06-25T15:20:44","date_gmt":"2014-06-25T13:20:44","guid":{"rendered":"http:\/\/sematext.solr.pl\/?p=638"},"modified":"2020-11-12T15:21:12","modified_gmt":"2020-11-12T14:21:12","slug":"lucene-and-solr-4-9","status":"publish","type":"post","link":"https:\/\/solr.pl\/en\/2014\/06\/25\/lucene-and-solr-4-9\/","title":{"rendered":"Lucene and Solr 4.9"},"content":{"rendered":"<p>Today Apache Lucene and Solr PMC announced another version of Apache Lucene library and Apache Solr search server numbered <strong>4.9<\/strong>. This is a next release continuing the 4th version of both Apache Lucene and Apache Solr.<\/p>\n\n\n<!--more-->\n\n\n<p>Here are some of the changes that were made comparing to the 4.8.1:<\/p>\n<h3>Lucene<\/h3>\n<ul>\n<li>New default format &#8211; Lucene49NormsFormat<\/li>\n<li>Numerous search time doc values performance improvements<\/li>\n<li>New posting format (<em>IDVersionPostingsFormat<\/em>) optimized for fields holding unique identifiers<\/li>\n<li>All Lucene files are now written using OutputStream on all platforms<\/li>\n<\/ul>\n<h3>Solr<\/h3>\n<ul>\n<li>Support for re-ranking top N query results<\/li>\n<li>New doc transformer allowing to include nested documents in results<\/li>\n<li>Ability to specify minimal replication factor for an update request<\/li>\n<li>Optimizations and bugfixes from Lucene 4.9<\/li>\n<\/ul>\n<p>Full changes list for Lucene can be found at <a href=\"http:\/\/wiki.apache.org\/lucene-java\/ReleaseNote49\">http:\/\/wiki.apache.org\/lucene-java\/ReleaseNote49<\/a>. Full list of changes in Solr 4.8 can be found at: <a href=\"http:\/\/wiki.apache.org\/solr\/ReleaseNote49\">http:\/\/wiki.apache.org\/solr\/ReleaseNote49<\/a>.<\/p>\n<p>Apache Lucene <strong>4.9<\/strong> library can be downloaded from the following address: <a href=\"http:\/\/www.apache.org\/dyn\/closer.cgi\/lucene\/java\/\" target=\"_blank\" rel=\"noopener noreferrer\">http:\/\/www.apache.org\/dyn\/closer.cgi\/lucene\/java\/<\/a>. Apache Solr <strong>4.9<\/strong> can be downloaded at the following URL address: <a href=\"http:\/\/www.apache.org\/dyn\/closer.cgi\/lucene\/solr\/\" target=\"_blank\" rel=\"noopener noreferrer\">http:\/\/www.apache.org\/dyn\/closer.cgi\/lucene\/solr\/<\/a>. Please remember that the mirrors are just starting to update so not all of them will contain the <strong>4.9<\/strong> version of Lucene and Solr.<\/p>","protected":false},"excerpt":{"rendered":"<p>Today Apache Lucene and Solr PMC announced another version of Apache Lucene library and Apache Solr search server numbered 4.9. This is a next release continuing the 4th version of both Apache Lucene and Apache Solr.<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[26,27],"tags":[162,257,164],"class_list":["post-638","post","type-post","status-publish","format-standard","hentry","category-lucene-en","category-solr-en","tag-lucene-2","tag-release-2","tag-solr-2"],"_links":{"self":[{"href":"https:\/\/solr.pl\/en\/wp-json\/wp\/v2\/posts\/638","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/solr.pl\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/solr.pl\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/solr.pl\/en\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/solr.pl\/en\/wp-json\/wp\/v2\/comments?post=638"}],"version-history":[{"count":1,"href":"https:\/\/solr.pl\/en\/wp-json\/wp\/v2\/posts\/638\/revisions"}],"predecessor-version":[{"id":639,"href":"https:\/\/solr.pl\/en\/wp-json\/wp\/v2\/posts\/638\/revisions\/639"}],"wp:attachment":[{"href":"https:\/\/solr.pl\/en\/wp-json\/wp\/v2\/media?parent=638"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/solr.pl\/en\/wp-json\/wp\/v2\/categories?post=638"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/solr.pl\/en\/wp-json\/wp\/v2\/tags?post=638"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}