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14,385 discussions - 61,186 posts

  • 17 June 2016, Apache Lucene™ 6.1.0 available The Lucene PMC is pleased to announce the release of Apache Lucene 6.1.0. Apache Lucene is a high-performance, full-featured text search engine library ...
    Adrien GrandAdrien Grand
    Jun 17, 2016 at 12:46 pm
    Jun 17, 2016 at 12:46 pm
  • Hi All, i have read some discussions on impact of querynorm values in lucene score when we specify more boosting. Impact is, if boosting increases, querynorm decreases a lot, and so more boosting ...
    Kumaran RamasubramanianKumaran Ramasubramanian
    Jun 17, 2016 at 9:31 am
    Jun 17, 2016 at 9:31 am
  • Came across a JIRA filed for pooling IndexReaders https://issues.apache.org/jira/browse/LUCENE-2297 For every commit/delete/update cycle IndexWriter opens a bunch of SegmentReaders, does the job & ...
    Ravikumar GovindarajanRavikumar Govindarajan
    Jun 16, 2016 at 11:19 am
    Jun 16, 2016 at 11:19 am
  • Hi guys Currenly, I'm looking into the rules of StandardTokenizer, but met some probleam. As the docs says, StandardTokenizer implements the Word Break rules from the Unicode Text Segmentation ...
    DrDr
    Jun 16, 2016 at 11:02 am
    Jun 16, 2016 at 3:16 pm
  • Hi, I'm observing below exception while getting instance of indexWriter- java.lang.IllegalArgumentException: Directory MMapDirectory@"directoryName" ...
    Mukul RanjanMukul Ranjan
    Jun 16, 2016 at 10:19 am
    Jun 16, 2016 at 7:45 pm
  • Hi, How can I prevent WordDelimiterFilter tokenize the string with underscore, e.g. word_with_underscore. I am using WordDelimiterFilter to create my own Camel Case analyzer, I was using the ...
    Xiaolong ZhengXiaolong Zheng
    Jun 15, 2016 at 7:32 pm
    Jun 16, 2016 at 5:02 am
  • Hi, I'm getting below exception while initializing FSDirectory- Caused by: java.lang.IllegalAccessError: tried to access method ...
    Mukul RanjanMukul Ranjan
    Jun 15, 2016 at 1:31 pm
    Jun 15, 2016 at 1:31 pm
  • Hi there, I would like to use Lucene to solve the following problem: 1.We have about 100k customers and we have 25 millions of documents. 2.When a customer performs a text search on the document ...
    Geebee CoderGeebee Coder
    Jun 15, 2016 at 1:25 pm
    Jun 17, 2016 at 1:27 am
  • Hey! The Lucene facets module uses integer encoding using the method " FacetsConfig.dedupAndEncode " . It would be convenient to use the IntPoint ? Thanks! Marcio Napoli
    Marcio NapoliMarcio Napoli
    Jun 15, 2016 at 1:25 pm
    Jun 17, 2016 at 10:42 pm
  • Hi, I have 150k documents in lucene index folder. It is taking 30-35 minute to rebuild the index. We are fetching this data from sql server. I have applied below parameters while getting instance of ...
    Mukul RanjanMukul Ranjan
    Jun 14, 2016 at 10:31 am
    Jun 14, 2016 at 11:13 am
  • Hi, We switched from MMAP to NIOFS due to high memory usage. Now seeing java.nio.channels.ClosedChannelException and java.nio.channels.ClosedByInterruptException during search. Stack traces ...
    Darren KennedyDarren Kennedy
    Jun 14, 2016 at 3:09 am
    Jun 14, 2016 at 3:09 am
  • How can I find the single index associated with each Document returned by a search over multiple indexes? The document number is not enough, I want to save the index also so that later I can retrieve ...
    Mark ShapiroMark Shapiro
    Jun 13, 2016 at 11:07 pm
    Jun 15, 2016 at 4:40 pm
  • I am referring this <http://blog.trifork.com/2012/01/22/query-time-joining-in-lucene/ link for usage of query time join and I am able to use following method createJoinQuery(String fromField, boolean ...
    Pravin ThokalPravin Thokal
    Jun 13, 2016 at 1:19 pm
    Jun 14, 2016 at 8:55 am
  • ====================================================================== CALL FOR PAPERS The 14th Workshop on Java Technologies for Real-Time and Embedded Systems JTRES 2016 Part of the Managed ...
    MascaMasca
    Jun 13, 2016 at 1:18 am
    Jun 13, 2016 at 1:18 am
  • Thanks for the help you’ve already given me on getting search with LatLonPoint working, the basics are working great and with great performance. I did some testing on some edge cases and discovered ...
    Randy TiddRandy Tidd
    Jun 12, 2016 at 5:43 pm
    Jun 12, 2016 at 9:22 pm
  • Hi Team, We have recently implemented a search feature in our web application using Lucene where we perform dynamic indexing. We are looking for opportunities of caching the index so that we do not ...
    Abhinav TiwariAbhinav Tiwari
    Jun 10, 2016 at 2:44 pm
    Jun 10, 2016 at 2:44 pm
  • Hi, I am a new user. I have already built a simple application to search with wildcard query. In Lucene wildcard search, a Lucene wildcard syntax is converted into an automaton but i do not know ...
    Kim Tu TruongKim Tu Truong
    Jun 10, 2016 at 2:43 pm
    Jun 10, 2016 at 3:23 pm
  • Hi, I can control the number of index segments when indexing using forceMerge(), but when searching occurs during indexing, then some segments become orphans and cannot be force merged. Why?Could ...
    Slav BoleslawskiSlav Boleslawski
    Jun 10, 2016 at 9:11 am
    Jun 10, 2016 at 9:19 am
  • Hi I am using lucene based index for solving following problem - 1. I have a doc with following structure: docName:<something includeKeywords: Space separated set of keywords. excludeKeywords: Space ...
    Apoorv guptaApoorv gupta
    Jun 9, 2016 at 11:17 am
    Jun 9, 2016 at 11:17 am
  • Dear Lucene users, I have implemented a custom tokenizer (derived from TokenStream). I need to pass additional attributes to those standard in Lucene (PositionIncrementAttribute, OffsetAttribute), ...
    Michal KrajňanskýMichal Krajňanský
    Jun 8, 2016 at 11:45 am
    Jun 13, 2016 at 12:34 am
  • Hi All, i am trying to retrieve most related results using user given search queries. If there is no results for exact queries, i want to use term modifiers during search time. And so, i want to give ...
    Kumaran RamasubramanianKumaran Ramasubramanian
    Jun 7, 2016 at 4:47 pm
    Jun 9, 2016 at 2:17 pm
  • Hello, I have a very strange behavior when I use the DirectSpellChecker of Lucene. I have set the prefixLength to 0. I have indexed only one item with one field : brand=samsung. I have tried to make ...
    Caroline ColletCaroline Collet
    Jun 7, 2016 at 1:54 pm
    Jun 7, 2016 at 3:29 pm
  • Hi, I am trying to implement paging using cursors on a very big index. I noticed I must index the unique ID with docValues=true otherwise the memory will be loaded (I got OOM very quickly). I want to ...
    Bracha YalonBracha Yalon
    Jun 6, 2016 at 8:32 am
    Jun 6, 2016 at 8:32 am
  • Hello, I have what I think is a relatively simple use case that I’d like to use Lucene to solve. We have a database of 100,000’s of data points each of which has a latitude and longitude. I’d like to ...
    Randall TiddRandall Tidd
    Jun 4, 2016 at 4:34 pm
    Jun 12, 2016 at 11:16 am
  • we use highlighter to get textfragments for our hit list. the code is straight forward like this Analyzer analyzer = new StandardAnalyzer(; QueryParser parser = new QueryParser( "content", ...
    Sascha JanzSascha Janz
    Jun 2, 2016 at 10:41 am
    Jun 4, 2016 at 1:24 am
  • ====================================================================== CALL FOR PAPERS The 14th Workshop on Java Technologies for Real-Time and Embedded Systems JTRES 2016 Part of the Managed ...
    MascaMasca
    Jun 1, 2016 at 11:52 pm
    Jun 1, 2016 at 11:52 pm
  • Hi All, In javadoc of every docvalue field <https://lucene.apache.org/core/4_10_4/core/org/apache/lucene/document/SortedNumericDocValuesField.html , there is line like ​ ...
    Kumaran RamasubramanianKumaran Ramasubramanian
    Jun 1, 2016 at 7:15 pm
    Jun 3, 2016 at 6:22 pm
  • Hi, I recently setup my code to choose the appropriate analyzer from analyzers-common depending on the language of the user's index/field. I then extended the existing source code to allow, for any ...
    Daniel BighamDaniel Bigham
    Jun 1, 2016 at 4:57 pm
    Jun 9, 2016 at 12:13 am
  • Hi, I have one doubt. Actually I have indexed 50 documents for both SortedNumericDocValuesField and IntField separately . Each document consists of 49 fields. After that, i performed indexing & ...
    Chitra RChitra R
    Jun 1, 2016 at 5:51 am
    Jun 3, 2016 at 11:52 am
  • I have been fighting for some time with trying to fix an issues in the application I am developing and since I am starting to run out of ideas I figured I'd try reaching out for help. I store a ...
    Conny GyllendahlConny Gyllendahl
    May 30, 2016 at 12:32 pm
    May 30, 2016 at 12:32 pm
  • Hi all, I am reading Lucene source code recently and we also use the Elastic Search as our search engine. As far as I know, the elastic search performance is pretty good. The elastic search is based ...
    Ting YaoTing Yao
    May 30, 2016 at 10:01 am
    Jun 5, 2016 at 7:25 am
  • 28 May 2016, Apache Lucene™ 6.0.1 available The Lucene PMC is pleased to announce the release of Apache Lucene 6.0.1 Apache Lucene is a high-performance, full-featured text search engine library ...
    Steve RoweSteve Rowe
    May 28, 2016 at 12:46 pm
    May 28, 2016 at 12:46 pm
  • I've noticed that the Document.setBoost method appears to have been removed at some point. What should be used now to boost a document? ...
    Daniel BighamDaniel Bigham
    May 27, 2016 at 4:36 pm
    May 27, 2016 at 4:41 pm
  • Hello, I am using indexes that can be as large as 25 Gb. Indexes are created for a specific time window (for instance it can be weekly based). Once the week is passed they are not written to ...
    Vincent SevelVincent Sevel
    May 27, 2016 at 8:11 am
    May 27, 2016 at 9:00 am
  • I'm attempting to upgrade my project to Lucene 6.0, and have run into an issue with sorting my results. My documents have a timestamp field that was previously a StoredField with NumericType: Long ...
    Jeremy FriesenJeremy Friesen
    May 26, 2016 at 9:54 pm
    May 27, 2016 at 7:22 am
  • Hi, I am new to lucene. Anyone please explain how to sort the numeric values by SortedNumericDocValuesField? I tried like this using Lucene 4.10.4: doc.add(new ...
    Chitra RChitra R
    May 26, 2016 at 1:29 pm
    May 31, 2016 at 2:31 pm
  • I've recently become aware that Lucene allows duplicate field names, which essentially allows multiple values to be associated with a field. A follow-up question is whether the order of the values is ...
    Daniel BighamDaniel Bigham
    May 25, 2016 at 7:58 pm
    May 26, 2016 at 12:47 pm
  • It makes a call to SlowCompositeReaderWrapper in line 103, which checks if field hasPointValues in line 68. If yes, it throws an exception "cannot wrap points". Does this essentially mean ...
    ShengSheng
    May 25, 2016 at 5:11 pm
    Jun 10, 2016 at 12:43 pm
  • Hello, all - I'd like to use Lucene's automaton/FST code to achieve fast fuzzy (OSA edit distance up to 2) search for many (10k+) strings (knowledge base: kb) in many large strings (docs). Approach I ...
    Luke NezdaLuke Nezda
    May 24, 2016 at 12:59 am
    May 29, 2016 at 8:27 am
  • Hello, I have some difficulties to find out in which release some API changes were made and information about how to migrate. For example I was not able to find: 1) when the method ...
    Jean-Claude DauphinJean-Claude Dauphin
    May 23, 2016 at 4:00 pm
    May 25, 2016 at 8:25 pm
  • Hi, I am new to lucene. I was following the example, IndexFiles, from the lucene demo package. However, one thing I find surpring is that the write.lock file is left over, even when the ...
    Jianbao (Jim) TaoJianbao (Jim) Tao
    May 22, 2016 at 5:20 pm
    Jun 1, 2016 at 1:04 pm
  • Hi Lucene lovers, I have a use-case where I want to *create a lucene based index* of multiple documents and then *want to cache that index*. Can anyone suggest if this is possible ? And which *type ...
    Prateek SinghalPrateek Singhal
    May 21, 2016 at 9:26 am
    May 22, 2016 at 4:32 pm
  • Adding lucene user mailing list to it.
    Pranaya BeheraPranaya Behera
    May 20, 2016 at 7:17 am
    May 20, 2016 at 7:17 am
  • Hi all, I’ve got an alternative representation in the index for numeric fields, and I need to construct an alternative approach for range queries. I’m sub-classing BooleanQuery (as ultimately that’s ...
    Ken KruglerKen Krugler
    May 19, 2016 at 8:28 pm
    May 25, 2016 at 2:11 pm
  • -------------------------------------------------------------------------------- 16th International Workshop on Worst-Case Execution Time Analysis WCET 2016 Toulouse, France, 5th July 2016 in ...
    MascaMasca
    May 19, 2016 at 6:40 pm
    May 19, 2016 at 6:40 pm
  • <span class="m_body_email_addr" title="1f563529755c3aa60b3ce8e56bbd0d24" java-user@lucene.apache.org</span Hi, I'm trying to use code from lucene-core for following use-case in my project. Given a ...
    HimanshuHimanshu
    May 18, 2016 at 3:38 am
    May 18, 2016 at 3:38 am
  • Hello, I am storing close to 100 fields in a single document which is being indexed. There are million such documents. Lucene version is 5.5.0 During search, I wish to get only 1 field out of these ...
    Ankit MurarkaAnkit Murarka
    May 16, 2016 at 12:39 pm
    May 17, 2016 at 5:27 am
  • Hi All, I was just checking the query grammer found in the java docs of the query parser : Query ::= ( Clause )* Clause ::= ["+", "-"] [<TERM ":"] ( <TERM | "(" Query ")" ) This is what is available ...
    Taher GalalTaher Galal
    May 15, 2016 at 10:57 am
    May 16, 2016 at 9:36 pm
  • I am experimenting with supporting synonyms on the query side by doing query expansion. For example, the query "open webpage" can be expanded if the following things are synonyms: "open" | "go to" ...
    Daniel BighamDaniel Bigham
    May 13, 2016 at 9:33 pm
    May 16, 2016 at 12:50 pm
  • Hello , I have a set of documents , doc1:{world,hello} doc2:{world,test,try} doc3:{try, play,work} doc4:{hello,football,play} I want to query like doc_id:(doc1 doc2 doc4) and want to fetch top ...
    Alok BhandariAlok Bhandari
    May 13, 2016 at 8:37 am
    May 13, 2016 at 8:37 am
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