发布于 2016-09-21 03:50:15 | 473 次阅读 | 评论: 0 | 来源: 网友投递
Apache Lucene全文检索引擎工具包
Lucene是apache软件基金会4 jakarta项目组的一个子项目，是一个开放源代码的全文检索引擎工具包，即它不是一个完整的全文检索引擎，而是一个全文检索引擎的架构，提供了完整的查询引擎和索引引擎，部分文本分析引擎（英文与德文两种西方语言）。Lucene的目的是为软件开发人员提供一个简单易用的工具包，以方便的在目标系统中实现全文检索的功能，或者是以此为基础建立起完整的全文检索引擎。
Apache Lucene 6.2.1 and Apache Solr 6.2.1 发布了。
Apache Lucene 6.2.1 的 Bug 修复：
LUCENE-7417: The standard Highlighter could throw an IllegalArgumentException when trying to highlight a query containing a degenerate case of a MultiPhraseQuery with one term.
LUCENE-7440: Document id skipping (PostingsEnum.advance) could throw an ArrayIndexOutOfBoundsException exception on large index segments (>1.8B docs) with large skips.
LUCENE-7442: MinHashFilter's ctor should validate its args.
LUCENE-7318: Fix backwards compatibility issues around StandardAnalyzer and its components, introduced with Lucene 6.2.0. The moved classes were restored in their original packages: LowercaseFilter and StopFilter, as well as several utility classes.
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Apache Solr 6.2.1 的 Bug 修复：
SOLR-9494: Use of {!collapse} sometimes doesn't correctly return true for Collector.needsScores(), especially when the query was cached. This can cause an exception when 'q' is a SpanQuery or potentially others.
SOLR-6744: fl renaming / alias of uniqueKey field generates null pointer exception in SolrCloud configuration
SOLR-9445: Admin requests are retried by CloudSolrClient and LBHttpSolrClient on failure.
SOLR-9439: Shard split clean up logic for older failed splits is faulty. The delete shard API has also been made more resilient against failures resulting from non-existent cores.
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