发布于 2016-01-22 07:26:04 | 207 次阅读 | 评论: 0 | 来源: 网友投递
Apache Solr 企业级全文搜索引擎
Solr是一个独立的企业级搜索应用服务器，它对外提供类似于Web-service的API接口。用户可以通过http请求，向搜索引擎服务器提交一定格式的XML文件，生成索引；也可以通过Http Get操作提出查找请求，并得到XML格式的返回结果；
Apache Solr 5.4.1 发布，更新如下：
Bug Fixes (8)
SOLR-8460: /analysis/field could throw exceptions for custom attributes.
(David Smiley, Uwe Schindler)
SOLR-8373: KerberosPlugin: Using multiple nodes on same machine leads clients to fetch TGT for every request
(Ishan Chattopadhyaya via noble)
SOLR-8059: &debug=results for distributed search when distrib.singlePass (sometimes activated automatically) could result in an NPE.
(David Smiley, Markus Jelsma)
SOLR-8422: When authentication enabled, requests fail if sent to a node that doesn't host the collection
(noble)
SOLR-7462: AIOOBE in RecordingJSONParser
(Scott Dawson, noble)
SOLR-8496: SolrIndexSearcher.getDocSet(List<Query>) incorrectly included deleted documents when all of the queries were uncached (or there was no filter cache). This caused multi-select faceting (including the JSON Facet API) to include deleted doc counts when the remaining non-excluded filters were all uncached. This bug was first introduced in 5.3.0
(Andreas Müller, Vasiliy Bout, Erick Erickson, Shawn Heisey, Hossman, yonik)
SOLR-8418: Adapt to changes in LUCENE-6590 for use of boosts with MLTHandler and Simple/CloudMLTQParser
(Jens Wille, Ramkumar Aiyengar)
SOLR-8561: Doing a rolling upgrade to 5.4.0 fails because the new nodes cannot find the shard leader properties where they expect. This bug was first introduced in 5.4.0 and a fallback was added so that the leader properties are searched in both the old location and the new one.
(Shai Erera)
New Features (1)
SOLR-8470: Make TTL of PKIAuthenticationPlugin's tokens configurable through a system property (pkiauth.ttl)
(noble)
更多内容请看：
http://apache.fayea.com/lucene/solr/5.4.1/
Apache Solr (读音: SOLer) 是一个开源的搜索服务器。Solr 使用 Java 语言开发，主要基于 HTTP 和 Apache Lucene 实现。Apache Solr 中存储的资源是以 Document 为对象进行存储的。每个文档由一系列的 Field 构成，每个 Field 表示资源的一个属性。Solr 中的每个 Document 需要有能唯一标识其自身的属性，默认情况下这个属性的名字是 id，在 Schema 配置文件中使用：id进行描述。