Apache Lucene 4.10.3 发布，文本搜索引擎库

4月18日 武汉 源创会开始报名，送华为开发板

Apache Lucene 4.10.3 发布，它是一个高性能的全 java 编写的文本搜索引擎库。几乎适用于所有需要全文搜索的应用程序。此版本中主要修复了 12 个 Bug。

Bug 修复：

1. LUCENE-6019, LUCENE-6117: Remove -Dtests.assert to make IndexWriterinfoStream sane.
   (Robert Muir, Mike McCandless)

2. LUCENE-6161: Resolving deletes was failing to reuse DocsEnum likelycausing substantial performance cost for use cases that frequentlydelete old documents
   (Mike McCandless)

3. LUCENE-6192: Fix int overflow corruption case in skip data forhigh frequency terms in extremely large indices
   (Robert Muir, MikeMcCandless)

4. LUCENE-6207: Fixed consumption of several terms enums on the samesorted (set) doc values instance at the same time.
   (Tom Shally, Robert Muir, Adrien Grand)

5. LUCENE-6093: Don't throw NullPointerException fromBlendedInfixSuggester for lookups that do not end in a prefixtoken.
   (jane chang via Mike McCandless)

6. LUCENE-6279: Don't let an abusive leftover _N_upgraded.si in theindex directory cause index corruption on upgrade
   (Robert Muir, MikeMcCandless)

7. LUCENE-6287: Fix concurrency bug in IndexWriter that could causeindex corruption (missing _N.si files) the first time 4.x kisses a3.x index if merges are also running.
   (Simon Willnauer, MikeMcCandless)

8. LUCENE-6205: Fixed intermittent concurrency issue that could causeFileNotFoundException when writing doc values updates at the sametime that a merge kicks off.
   (Mike McCandless)

9. LUCENE-6214: Fixed IndexWriter deadlock when one thread iscommitting while another opens a near-real-time reader and anunrecoverable (tragic) exception is hit.
   (Simon Willnauer, MikeMcCandless)

10. LUCENE-6105: Don't cache FST root arcs if the number of root arcs issmall, or if the cache would be > 20% of the size of the FST.
    (Robert Muir, Mike McCandless)

11. LUCENE-6001: DrillSideways hits NullPointerException for certainBooleanQuery searches.
    (Dragan Jotannovic, jane chang via MikeMcCandless)

12. LUCENE-6306: Merging of doc values and norms now checks whether themerge was aborted so IndexWriter.rollback can more promptly abort arunning merge.
    (Robert Muir, Mike McCandless)

更多详情内容请见发行页面。

本版本已提供下载：

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