| Lucene Change Log |
| |
| For more information on past and future Lucene versions, please see: |
| http://s.apache.org/luceneversions |
| |
| ======================= Lucene 3.5.0 ======================= |
| |
| Bug fixes |
| |
| * LUCENE-3412: SloppyPhraseScorer was returning non-deterministic results |
| for queries with many repeats (Doron Cohen) |
| |
| * LUCENE-3421: PayloadTermQuery's explain was wrong when includeSpanScore=false. |
| (Edward Drapkin via Robert Muir) |
| |
| * LUCENE-3432: IndexWriter.expungeDeletes with TieredMergePolicy |
| should ignore the maxMergedSegmentMB setting (v.sevel via Mike |
| McCandless) |
| |
| New Features |
| |
| Optimizations |
| |
| * LUCENE-3426: Add NGramPhraseQuery which extends PhraseQuery and tries to reduce |
| the number of terms of the query when rewrite(), in order to improve performance. |
| (Robert Muir, Koji Sekiguchi) |
| |
| ======================= Lucene 3.4.0 ======================= |
| |
| Bug fixes |
| |
| * LUCENE-3251: Directory#copy failed to close target output if opening the |
| source stream failed. (Simon Willnauer) |
| |
| * LUCENE-3255: If segments_N file is all zeros (due to file |
| corruption), don't read that to mean the index is empty. (Gregory |
| Tarr, Mark Harwood, Simon Willnauer, Mike McCandless) |
| |
| * LUCENE-3254: Fixed minor bug in deletes were written to disk, |
| causing the file to sometimes be larger than it needed to be. (Mike |
| McCandless) |
| |
| * LUCENE-3224: Fixed a big where CheckIndex would incorrectly report a |
| corrupt index if a term with docfreq >= 16 was indexed more than once |
| at the same position. (Robert Muir) |
| |
| * LUCENE-3339: Fixed deadlock case when multiple threads use the new |
| block-add (IndexWriter.add/updateDocuments) methods. (Robert Muir, |
| Mike McCandless) |
| |
| * LUCENE-3340: Fixed case where IndexWriter was not flushing at |
| exactly maxBufferedDeleteTerms (Mike McCandless) |
| |
| * LUCENE-3358, LUCENE-3361: StandardTokenizer and UAX29URLEmailTokenizer |
| wrongly discarded combining marks attached to Han or Hiragana characters, |
| this is fixed if you supply Version >= 3.4 If you supply a previous |
| lucene version, you get the old buggy behavior for backwards compatibility. |
| (Trejkaz, Robert Muir) |
| |
| * LUCENE-3368: IndexWriter commits segments without applying their buffered |
| deletes when flushing concurrently. (Simon Willnauer, Mike McCandless) |
| |
| * LUCENE-3365: Create or Append mode determined before obtaining write lock |
| can cause IndexWriter overriding an existing index. |
| (Geoff Cooney via Simon Willnauer) |
| |
| * LUCENE-3380: Fixed a bug where FileSwitchDirectory's listAll() would wrongly |
| throw NoSuchDirectoryException when all files written so far have been |
| written to one directory, but the other still has not yet been created on the |
| filesystem. (Robert Muir) |
| |
| * LUCENE-3402: term vectors disappeared from the index if optimize() was called |
| following addIndexes(). (Shai Erera) |
| |
| * LUCENE-3409: IndexWriter.deleteAll was failing to close pooled NRT |
| SegmentReaders, leading to unused files accumulating in the |
| Directory. (tal steier via Mike McCandless) |
| |
| * LUCENE-3390: Added SortField.setMissingValue(v) to enable well defined |
| sorting behavior for documents that do not include the given field. |
| (Gilad Barkai via Doron Cohen) |
| |
| * LUCENE-3418: Lucene was failing to fsync index files on commit, |
| meaning an operating system or hardware crash, or power loss, could |
| easily corrupt the index. (Mark Miller, Robert Muir, Mike |
| McCandless) |
| |
| New Features |
| |
| * LUCENE-3290: Added FieldInvertState.numUniqueTerms |
| (Mike McCandless, Robert Muir) |
| |
| * LUCENE-3280: Add FixedBitSet, like OpenBitSet but is not elastic |
| (grow on demand if you set/get/clear too-large indices). (Mike |
| McCandless) |
| |
| * LUCENE-2048: Added the ability to omit positions but still index |
| term frequencies, you can now control what is indexed into |
| the postings via AbstractField.setIndexOptions: |
| DOCS_ONLY: only documents are indexed: term frequencies and positions are omitted |
| DOCS_AND_FREQS: only documents and term frequencies are indexed: positions are omitted |
| DOCS_AND_FREQS_AND_POSITIONS: full postings: documents, frequencies, and positions |
| AbstractField.setOmitTermFrequenciesAndPositions is deprecated, |
| you should use DOCS_ONLY instead. (Robert Muir) |
| |
| * LUCENE-3097: Added a new grouping collector that can be used to retrieve all most relevant |
| documents per group. This can be useful in situations when one wants to compute grouping |
| based facets / statistics on the complete query result. (Martijn van Groningen) |
| |
| * LUCENE-3334: If Java7 is detected, IOUtils.closeSafely() will log |
| suppressed exceptions in the original exception, so stack trace |
| will contain them. (Uwe Schindler) |
| |
| Optimizations |
| |
| * LUCENE-3289: When building an FST you can now tune how aggressively |
| the FST should try to share common suffixes. Typically you can |
| greatly reduce RAM required during building, and CPU consumed, at |
| the cost of a somewhat larger FST. (Mike McCandless) |
| |
| Test Cases |
| |
| * LUCENE-3327: Fix AIOOBE when TestFSTs is run with |
| -Dtests.verbose=true (James Dyer via Mike McCandless) |
| |
| Build |
| |
| * LUCENE-3406: Add ant target 'package-local-src-tgz' to Lucene and Solr |
| to package sources from the local working copy. |
| (Seung-Yeoul Yang via Steve Rowe) |
| |
| |
| ======================= Lucene 3.3.0 ======================= |
| |
| Changes in backwards compatibility policy |
| |
| * LUCENE-3140: IndexOutput.copyBytes now takes a DataInput (superclass |
| of IndexInput) as its first argument. (Robert Muir, Dawid Weiss, |
| Mike McCandless) |
| |
| * LUCENE-3191: FieldComparator.value now returns an Object not |
| Comparable; FieldDoc.fields also changed from Comparable[] to |
| Object[] (Uwe Schindler, Mike McCandless) |
| |
| * LUCENE-3208: Made deprecated methods Query.weight(Searcher) and |
| Searcher.createWeight() final to prevent override. If you have |
| overridden one of these methods, cut over to the non-deprecated |
| implementation. (Uwe Schindler, Robert Muir, Yonik Seeley) |
| |
| * LUCENE-3238: Made MultiTermQuery.rewrite() final, to prevent |
| problems (such as not properly setting rewrite methods, or |
| not working correctly with things like SpanMultiTermQueryWrapper). |
| To rewrite to a simpler form, instead return a simpler enum |
| from getEnum(IndexReader). For example, to rewrite to a single term, |
| return a SingleTermEnum. (ludovic Boutros, Uwe Schindler, Robert Muir) |
| |
| Changes in runtime behavior |
| |
| * LUCENE-2834: the hash used to compute the lock file name when the |
| lock file is not stored in the index has changed. This means you |
| will see a different lucene-XXX-write.lock in your lock directory. |
| (Robert Muir, Uwe Schindler, Mike McCandless) |
| |
| * LUCENE-3146: IndexReader.setNorm throws IllegalStateException if the field |
| does not store norms. (Shai Erera, Mike McCandless) |
| |
| * LUCENE-3198: On Linux, if the JRE is 64 bit and supports unmapping, |
| FSDirectory.open now defaults to MMapDirectory instead of |
| NIOFSDirectory since MMapDirectory gives better performance. (Mike |
| McCandless) |
| |
| * LUCENE-3200: MMapDirectory now uses chunk sizes that are powers of 2. |
| When setting the chunk size, it is rounded down to the next possible |
| value. The new default value for 64 bit platforms is 2^30 (1 GiB), |
| for 32 bit platforms it stays unchanged at 2^28 (256 MiB). |
| Internally, MMapDirectory now only uses one dedicated final IndexInput |
| implementation supporting multiple chunks, which makes Hotspot's life |
| easier. (Uwe Schindler, Robert Muir, Mike McCandless) |
| |
| Bug fixes |
| |
| * LUCENE-3147,LUCENE-3152: Fixed open file handles leaks in many places in the |
| code. Now MockDirectoryWrapper (in test-framework) tracks all open files, |
| including locks, and fails if the test fails to release all of them. |
| (Mike McCandless, Robert Muir, Shai Erera, Simon Willnauer) |
| |
| * LUCENE-3102: CachingCollector.replay was failing to call setScorer |
| per-segment (Martijn van Groningen via Mike McCandless) |
| |
| * LUCENE-3183: Fix rare corner case where seeking to empty term |
| (field="", term="") with terms index interval 1 could hit |
| ArrayIndexOutOfBoundsException (selckin, Robert Muir, Mike |
| McCandless) |
| |
| * LUCENE-3208: IndexSearcher had its own private similarity field |
| and corresponding get/setter overriding Searcher's implementation. If you |
| setted a different Similarity instance on IndexSearcher, methods implemented |
| in the superclass Searcher were not using it, leading to strange bugs. |
| (Uwe Schindler, Robert Muir) |
| |
| * LUCENE-3197: Fix core merge policies to not over-merge during |
| background optimize when documents are still being deleted |
| concurrently with the optimize (Mike McCandless) |
| |
| * LUCENE-3222: The RAM accounting for buffered delete terms was |
| failing to measure the space required to hold the term's field and |
| text character data. (Mike McCandless) |
| |
| * LUCENE-3238: Fixed bug where using WildcardQuery("prefix*") inside |
| of a SpanMultiTermQueryWrapper rewrote incorrectly and returned |
| an error instead. (ludovic Boutros, Uwe Schindler, Robert Muir) |
| |
| API Changes |
| |
| * LUCENE-3208: Renamed protected IndexSearcher.createWeight() to expert |
| public method IndexSearcher.createNormalizedWeight() as this better describes |
| what this method does. The old method is still there for backwards |
| compatibility. Query.weight() was deprecated and simply delegates to |
| IndexSearcher. Both deprecated methods will be removed in Lucene 4.0. |
| (Uwe Schindler, Robert Muir, Yonik Seeley) |
| |
| * LUCENE-3197: MergePolicy.findMergesForOptimize now takes |
| Map<SegmentInfo,Boolean> instead of Set<SegmentInfo> as the second |
| argument, so the merge policy knows which segments were originally |
| present vs produced by an optimizing merge (Mike McCandless) |
| |
| Optimizations |
| |
| * LUCENE-1736: DateTools.java general improvements. |
| (David Smiley via Steve Rowe) |
| |
| New Features |
| |
| * LUCENE-3140: Added experimental FST implementation to Lucene. |
| (Robert Muir, Dawid Weiss, Mike McCandless) |
| |
| * LUCENE-3193: A new TwoPhaseCommitTool allows running a 2-phase commit |
| algorithm over objects that implement the new TwoPhaseCommit interface (such |
| as IndexWriter). (Shai Erera) |
| |
| * LUCENE-3191: Added TopDocs.merge, to facilitate merging results from |
| different shards (Uwe Schindler, Mike McCandless) |
| |
| * LUCENE-3179: Added OpenBitSet.prevSetBit (Paul Elschot via Mike McCandless) |
| |
| * LUCENE-3210: Made TieredMergePolicy more aggressive in reclaiming |
| segments with deletions; added new methods |
| set/getReclaimDeletesWeight to control this. (Mike McCandless) |
| |
| Build |
| |
| * LUCENE-1344: Create OSGi bundle using dev-tools/maven. |
| (Nicolas Lalevée, Luca Stancapiano via ryan) |
| |
| * LUCENE-3204: The maven-ant-tasks jar is now included in the source tree; |
| users of the generate-maven-artifacts target no longer have to manually |
| place this jar in the Ant classpath. NOTE: when Ant looks for the |
| maven-ant-tasks jar, it looks first in its pre-existing classpath, so |
| any copies it finds will be used instead of the copy included in the |
| Lucene/Solr source tree. For this reason, it is recommeded to remove |
| any copies of the maven-ant-tasks jar in the Ant classpath, e.g. under |
| ~/.ant/lib/ or under the Ant installation's lib/ directory. (Steve Rowe) |
| |
| |
| ======================= Lucene 3.2.0 ======================= |
| |
| Changes in backwards compatibility policy |
| |
| * LUCENE-2953: PriorityQueue's internal heap was made private, as subclassing |
| with generics can lead to ClassCastException. For advanced use (e.g. in Solr) |
| a method getHeapArray() was added to retrieve the internal heap array as a |
| non-generic Object[]. (Uwe Schindler, Yonik Seeley) |
| |
| * LUCENE-1076: IndexWriter.setInfoStream now throws IOException |
| (Mike McCandless, Shai Erera) |
| |
| * LUCENE-3084: MergePolicy.OneMerge.segments was changed from |
| SegmentInfos to a List<SegmentInfo>. SegmentInfos itsself was changed |
| to no longer extend Vector<SegmentInfo> (to update code that is using |
| Vector-API, use the new asList() and asSet() methods returning unmodifiable |
| collections; modifying SegmentInfos is now only possible through |
| the explicitely declared methods). IndexWriter.segString() now takes |
| Iterable<SegmentInfo> instead of List<SegmentInfo>. A simple recompile |
| should fix this. MergePolicy and SegmentInfos are internal/experimental |
| APIs not covered by the strict backwards compatibility policy. |
| (Uwe Schindler, Mike McCandless) |
| |
| Changes in runtime behavior |
| |
| * LUCENE-3065: When a NumericField is retrieved from a Document loaded |
| from IndexReader (or IndexSearcher), it will now come back as |
| NumericField not as a Field with a string-ified version of the |
| numeric value you had indexed. Note that this only applies for |
| newly-indexed Documents; older indices will still return Field |
| with the string-ified numeric value. If you call Document.get(), |
| the value comes still back as String, but Document.getFieldable() |
| returns NumericField instances. (Uwe Schindler, Ryan McKinley, |
| Mike McCandless) |
| |
| * LUCENE-1076: Changed the default merge policy from |
| LogByteSizeMergePolicy to TieredMergePolicy, as of Version.LUCENE_32 |
| (passed to IndexWriterConfig), which is able to merge non-contiguous |
| segments. This means docIDs no longer necessarily stay "in order" |
| during indexing. If this is a problem then you can use either of |
| the LogMergePolicy impls. (Mike McCandless) |
| |
| New features |
| |
| * LUCENE-3082: Added index upgrade tool oal.index.IndexUpgrader |
| that allows to upgrade all segments to last recent supported index |
| format without fully optimizing. (Uwe Schindler, Mike McCandless) |
| |
| * LUCENE-1076: Added TieredMergePolicy which is able to merge non-contiguous |
| segments, which means docIDs no longer necessarily stay "in order". |
| (Mike McCandless, Shai Erera) |
| |
| * LUCENE-3071: Adding ReversePathHierarchyTokenizer, added skip parameter to |
| PathHierarchyTokenizer (Olivier Favre via ryan) |
| |
| * LUCENE-1421, LUCENE-3102: added CachingCollector which allow you to cache |
| document IDs and scores encountered during the search, and "replay" them to |
| another Collector. (Mike McCandless, Shai Erera) |
| |
| * LUCENE-3112: Added experimental IndexWriter.add/updateDocuments, |
| enabling a block of documents to be indexed, atomically, with |
| guaranteed sequential docIDs. (Mike McCandless) |
| |
| API Changes |
| |
| * LUCENE-3061: IndexWriter's getNextMerge() and merge(OneMerge) are now public |
| (though @lucene.experimental), allowing for custom MergeScheduler |
| implementations. (Shai Erera) |
| |
| * LUCENE-3065: Document.getField() was deprecated, as it throws |
| ClassCastException when loading lazy fields or NumericFields. |
| (Uwe Schindler, Ryan McKinley, Mike McCandless) |
| |
| * LUCENE-2027: Directory.touchFile is deprecated and will be removed |
| in 4.0. (Mike McCandless) |
| |
| Optimizations |
| |
| * LUCENE-2990: ArrayUtil/CollectionUtil.*Sort() methods now exit early |
| on empty or one-element lists/arrays. (Uwe Schindler) |
| |
| * LUCENE-2897: Apply deleted terms while flushing a segment. We still |
| buffer deleted terms to later apply to past segments. (Mike McCandless) |
| |
| * LUCENE-3126: IndexWriter.addIndexes copies incoming segments into CFS if they |
| aren't already and MergePolicy allows that. (Shai Erera) |
| |
| Bug fixes |
| |
| * LUCENE-2996: addIndexes(IndexReader) did not flush before adding the new |
| indexes, causing existing deletions to be applied on the incoming indexes as |
| well. (Shai Erera, Mike McCandless) |
| |
| * LUCENE-3024: Index with more than 2.1B terms was hitting AIOOBE when |
| seeking TermEnum (eg used by Solr's faceting) (Tom Burton-West, Mike |
| McCandless) |
| |
| * LUCENE-3042: When a filter or consumer added Attributes to a TokenStream |
| chain after it was already (partly) consumed [or clearAttributes(), |
| captureState(), cloneAttributes(),... was called by the Tokenizer], |
| the Tokenizer calling clearAttributes() or capturing state after addition |
| may not do this on the newly added Attribute. This bug affected only |
| very special use cases of the TokenStream-API, most users would not |
| have recognized it. (Uwe Schindler, Robert Muir) |
| |
| * LUCENE-3054: PhraseQuery can in some cases stack overflow in |
| SorterTemplate.quickSort(). This fix also adds an optimization to |
| PhraseQuery as term with lower doc freq will also have less positions. |
| (Uwe Schindler, Robert Muir, Otis Gospodnetic) |
| |
| * LUCENE-3068: sloppy phrase query failed to match valid documents when multiple |
| query terms had same position in the query. (Doron Cohen) |
| |
| * LUCENE-3012: Lucene writes the header now for separate norm files (*.sNNN) |
| (Robert Muir) |
| |
| Build |
| |
| * LUCENE-3006: Building javadocs will fail on warnings by default. |
| Override with -Dfailonjavadocwarning=false (sarowe, gsingers) |
| |
| * LUCENE-3128: "ant eclipse" creates a .project file for easier Eclipse |
| integration (unless one already exists). (Daniel Serodio via Shai Erera) |
| |
| Test Cases |
| |
| * LUCENE-3002: added 'tests.iter.min' to control 'tests.iter' by allowing to |
| stop iterating if at least 'tests.iter.min' ran and a failure occured. |
| (Shai Erera, Chris Hostetter) |
| |
| ======================= Lucene 3.1.0 ======================= |
| |
| Changes in backwards compatibility policy |
| |
| * LUCENE-2719: Changed API of internal utility class |
| org.apache.lucene.util.SorterTemplate to support faster quickSort using |
| pivot values and also merge sort and insertion sort. If you have used |
| this class, you have to implement two more methods for handling pivots. |
| (Uwe Schindler, Robert Muir, Mike McCandless) |
| |
| * LUCENE-1923: Renamed SegmentInfo & SegmentInfos segString method to |
| toString. These are advanced APIs and subject to change suddenly. |
| (Tim Smith via Mike McCandless) |
| |
| * LUCENE-2190: Removed deprecated customScore() and customExplain() |
| methods from experimental CustomScoreQuery. (Uwe Schindler) |
| |
| * LUCENE-2286: Enabled DefaultSimilarity.setDiscountOverlaps by default. |
| This means that terms with a position increment gap of zero do not |
| affect the norms calculation by default. (Robert Muir) |
| |
| * LUCENE-2320: MergePolicy.writer is now of type SetOnce, which allows setting |
| the IndexWriter for a MergePolicy exactly once. You can change references to |
| 'writer' from <code>writer.doXYZ()</code> to <code>writer.get().doXYZ()</code> |
| (it is also advisable to add an <code>assert writer != null;</code> before you |
| access the wrapped IndexWriter.) |
| |
| In addition, MergePolicy only exposes a default constructor, and the one that |
| took IndexWriter as argument has been removed from all MergePolicy extensions. |
| (Shai Erera via Mike McCandless) |
| |
| * LUCENE-2328: SimpleFSDirectory.SimpleFSIndexInput is moved to |
| FSDirectory.FSIndexInput. Anyone extending this class will have to |
| fix their code on upgrading. (Earwin Burrfoot via Mike McCandless) |
| |
| * LUCENE-2302: The new interface for term attributes, CharTermAttribute, |
| now implements CharSequence. This requires the toString() methods of |
| CharTermAttribute, deprecated TermAttribute, and Token to return only |
| the term text and no other attribute contents. LUCENE-2374 implements |
| an attribute reflection API to no longer rely on toString() for attribute |
| inspection. (Uwe Schindler, Robert Muir) |
| |
| * LUCENE-2372, LUCENE-2389: StandardAnalyzer, KeywordAnalyzer, |
| PerFieldAnalyzerWrapper, WhitespaceTokenizer are now final. Also removed |
| the now obsolete and deprecated Analyzer.setOverridesTokenStreamMethod(). |
| Analyzer and TokenStream base classes now have an assertion in their ctor, |
| that check subclasses to be final or at least have final implementations |
| of incrementToken(), tokenStream(), and reusableTokenStream(). |
| (Uwe Schindler, Robert Muir) |
| |
| * LUCENE-2316: Directory.fileLength contract was clarified - it returns the |
| actual file's length if the file exists, and throws FileNotFoundException |
| otherwise. Returning length=0 for a non-existent file is no longer allowed. If |
| you relied on that, make sure to catch the exception. (Shai Erera) |
| |
| * LUCENE-2386: IndexWriter no longer performs an empty commit upon new index |
| creation. Previously, if you passed an empty Directory and set OpenMode to |
| CREATE*, IndexWriter would make a first empty commit. If you need that |
| behavior you can call writer.commit()/close() immediately after you create it. |
| (Shai Erera, Mike McCandless) |
| |
| * LUCENE-2733: Removed public constructors of utility classes with only static |
| methods to prevent instantiation. (Uwe Schindler) |
| |
| * LUCENE-2602: The default (LogByteSizeMergePolicy) merge policy now |
| takes deletions into account by default. You can disable this by |
| calling setCalibrateSizeByDeletes(false) on the merge policy. (Mike |
| McCandless) |
| |
| * LUCENE-2529, LUCENE-2668: Position increment gap and offset gap of empty |
| values in multi-valued field has been changed for some cases in index. |
| If you index empty fields and uses positions/offsets information on that |
| fields, reindex is recommended. (David Smiley, Koji Sekiguchi) |
| |
| * LUCENE-2804: Directory.setLockFactory new declares throwing an IOException. |
| (Shai Erera, Robert Muir) |
| |
| * LUCENE-2837: Added deprecations noting that in 4.0, Searcher and |
| Searchable are collapsed into IndexSearcher; contrib/remote and |
| MultiSearcher have been removed. (Mike McCandless) |
| |
| * LUCENE-2854: Deprecated SimilarityDelegator and |
| Similarity.lengthNorm; the latter is now final, forcing any custom |
| Similarity impls to cutover to the more general computeNorm (Robert |
| Muir, Mike McCandless) |
| |
| * LUCENE-2869: Deprecated Query.getSimilarity: instead of using |
| "runtime" subclassing/delegation, subclass the Weight instead. |
| (Robert Muir) |
| |
| * LUCENE-2674: A new idfExplain method was added to Similarity, that |
| accepts an incoming docFreq. If you subclass Similarity, make sure |
| you also override this method on upgrade. (Robert Muir, Mike |
| McCandless) |
| |
| Changes in runtime behavior |
| |
| * LUCENE-1923: Made IndexReader.toString() produce something |
| meaningful (Tim Smith via Mike McCandless) |
| |
| * LUCENE-2179: CharArraySet.clear() is now functional. |
| (Robert Muir, Uwe Schindler) |
| |
| * LUCENE-2455: IndexWriter.addIndexes no longer optimizes the target index |
| before it adds the new ones. Also, the existing segments are not merged and so |
| the index will not end up with a single segment (unless it was empty before). |
| In addition, addIndexesNoOptimize was renamed to addIndexes and no longer |
| invokes a merge on the incoming and target segments, but instead copies the |
| segments to the target index. You can call maybeMerge or optimize after this |
| method completes, if you need to. |
| |
| In addition, Directory.copyTo* were removed in favor of copy which takes the |
| target Directory, source and target files as arguments, and copies the source |
| file to the target Directory under the target file name. (Shai Erera) |
| |
| * LUCENE-2663: IndexWriter no longer forcefully clears any existing |
| locks when create=true. This was a holdover from when |
| SimpleFSLockFactory was the default locking implementation, and, |
| even then it was dangerous since it could mask bugs in IndexWriter's |
| usage, allowing applications to accidentally open two writers on the |
| same directory. (Mike McCandless) |
| |
| * LUCENE-2701: maxMergeMBForOptimize and maxMergeDocs constraints set on |
| LogMergePolicy now affect optimize() as well (as opposed to only regular |
| merges). This means that you can run optimize() and too large segments won't |
| be merged. (Shai Erera) |
| |
| * LUCENE-2753: IndexReader and DirectoryReader .listCommits() now return a List, |
| guaranteeing the commits are sorted from oldest to latest. (Shai Erera) |
| |
| * LUCENE-2785: TopScoreDocCollector, TopFieldCollector and |
| the IndexSearcher search methods that take an int nDocs will now |
| throw IllegalArgumentException if nDocs is 0. Instead, you should |
| use the newly added TotalHitCountCollector. (Mike McCandless) |
| |
| * LUCENE-2790: LogMergePolicy.useCompoundFile's logic now factors in noCFSRatio |
| to determine whether the passed in segment should be compound. |
| (Shai Erera, Earwin Burrfoot) |
| |
| * LUCENE-2805: IndexWriter now increments the index version on every change to |
| the index instead of for every commit. Committing or closing the IndexWriter |
| without any changes to the index will not cause any index version increment. |
| (Simon Willnauer, Mike McCandless) |
| |
| * LUCENE-2650, LUCENE-2825: The behavior of FSDirectory.open has changed. On 64-bit |
| Windows and Solaris systems that support unmapping, FSDirectory.open returns |
| MMapDirectory. Additionally the behavior of MMapDirectory has been |
| changed to enable unmapping by default if supported by the JRE. |
| (Mike McCandless, Uwe Schindler, Robert Muir) |
| |
| * LUCENE-2829: Improve the performance of "primary key" lookup use |
| case (running a TermQuery that matches one document) on a |
| multi-segment index. (Robert Muir, Mike McCandless) |
| |
| * LUCENE-2010: Segments with 100% deleted documents are now removed on |
| IndexReader or IndexWriter commit. (Uwe Schindler, Mike McCandless) |
| |
| * LUCENE-2960: Allow some changes to IndexWriterConfig to take effect |
| "live" (after an IW is instantiated), via |
| IndexWriter.getConfig().setXXX(...) (Shay Banon, Mike McCandless) |
| |
| API Changes |
| |
| * LUCENE-2076: Rename FSDirectory.getFile -> getDirectory. (George |
| Aroush via Mike McCandless) |
| |
| * LUCENE-1260: Change norm encode (float->byte) and decode |
| (byte->float) to be instance methods not static methods. This way a |
| custom Similarity can alter how norms are encoded, though they must |
| still be encoded as a single byte (Johan Kindgren via Mike |
| McCandless) |
| |
| * LUCENE-2103: NoLockFactory should have a private constructor; |
| until Lucene 4.0 the default one will be deprecated. |
| (Shai Erera via Uwe Schindler) |
| |
| * LUCENE-2177: Deprecate the Field ctors that take byte[] and Store. |
| Since the removal of compressed fields, Store can only be YES, so |
| it's not necessary to specify. (Erik Hatcher via Mike McCandless) |
| |
| * LUCENE-2200: Several final classes had non-overriding protected |
| members. These were converted to private and unused protected |
| constructors removed. (Steven Rowe via Robert Muir) |
| |
| * LUCENE-2240: SimpleAnalyzer and WhitespaceAnalyzer now have |
| Version ctors. (Simon Willnauer via Uwe Schindler) |
| |
| * LUCENE-2259: Add IndexWriter.deleteUnusedFiles, to attempt removing |
| unused files. This is only useful on Windows, which prevents |
| deletion of open files. IndexWriter will eventually remove these |
| files itself; this method just lets you do so when you know the |
| files are no longer open by IndexReaders. (luocanrao via Mike |
| McCandless) |
| |
| * LUCENE-2282: IndexFileNames is exposed as a public class allowing for easier |
| use by external code. In addition it offers a matchExtension method which |
| callers can use to query whether a certain file matches a certain extension. |
| (Shai Erera via Mike McCandless) |
| |
| * LUCENE-124: Add a TopTermsBoostOnlyBooleanQueryRewrite to MultiTermQuery. |
| This rewrite method is similar to TopTermsScoringBooleanQueryRewrite, but |
| only scores terms by their boost values. For example, this can be used |
| with FuzzyQuery to ensure that exact matches are always scored higher, |
| because only the boost will be used in scoring. (Robert Muir) |
| |
| * LUCENE-2015: Add a static method foldToASCII to ASCIIFoldingFilter to |
| expose its folding logic. (CĂ©drik Lime via Robert Muir) |
| |
| * LUCENE-2294: IndexWriter constructors have been deprecated in favor of a |
| single ctor which accepts IndexWriterConfig and a Directory. You can set all |
| the parameters related to IndexWriter on IndexWriterConfig. The different |
| setter/getter methods were deprecated as well. One should call |
| writer.getConfig().getXYZ() to query for a parameter XYZ. |
| Additionally, the setter/getter related to MergePolicy were deprecated as |
| well. One should interact with the MergePolicy directly. |
| (Shai Erera via Mike McCandless) |
| |
| * LUCENE-2320: IndexWriter's MergePolicy configuration was moved to |
| IndexWriterConfig and the respective methods on IndexWriter were deprecated. |
| (Shai Erera via Mike McCandless) |
| |
| * LUCENE-2328: Directory now keeps track itself of the files that are written |
| but not yet fsynced. The old Directory.sync(String file) method is deprecated |
| and replaced with Directory.sync(Collection<String> files). Take a look at |
| FSDirectory to see a sample of how such tracking might look like, if needed |
| in your custom Directories. (Earwin Burrfoot via Mike McCandless) |
| |
| * LUCENE-2302: Deprecated TermAttribute and replaced by a new |
| CharTermAttribute. The change is backwards compatible, so |
| mixed new/old TokenStreams all work on the same char[] buffer |
| independent of which interface they use. CharTermAttribute |
| has shorter method names and implements CharSequence and |
| Appendable. This allows usage like Java's StringBuilder in |
| addition to direct char[] access. Also terms can directly be |
| used in places where CharSequence is allowed (e.g. regular |
| expressions). |
| (Uwe Schindler, Robert Muir) |
| |
| * LUCENE-2402: IndexWriter.deleteUnusedFiles now deletes unreferenced commit |
| points too. If you use an IndexDeletionPolicy which holds onto index commits |
| (such as SnapshotDeletionPolicy), you can call this method to remove those |
| commit points when they are not needed anymore (instead of waiting for the |
| next commit). (Shai Erera) |
| |
| * LUCENE-2481: SnapshotDeletionPolicy.snapshot() and release() were replaced |
| with equivalent ones that take a String (id) as argument. You can pass |
| whatever ID you want, as long as you use the same one when calling both. |
| (Shai Erera) |
| |
| * LUCENE-2356: Add IndexWriterConfig.set/getReaderTermIndexDivisor, to |
| set what IndexWriter passes for termsIndexDivisor to the readers it |
| opens internally when apply deletions or creating a near-real-time |
| reader. (Earwin Burrfoot via Mike McCandless) |
| |
| * LUCENE-2167,LUCENE-2699,LUCENE-2763,LUCENE-2847: StandardTokenizer/Analyzer |
| in common/standard/ now implement the Word Break rules from the Unicode 6.0.0 |
| Text Segmentation algorithm (UAX#29), covering the full range of Unicode code |
| points, including values from U+FFFF to U+10FFFF |
| |
| ClassicTokenizer/Analyzer retains the old (pre-Lucene 3.1) StandardTokenizer/ |
| Analyzer implementation and behavior. Only the Unicode Basic Multilingual |
| Plane (code points from U+0000 to U+FFFF) is covered. |
| |
| UAX29URLEmailTokenizer tokenizes URLs and E-mail addresses according to the |
| relevant RFCs, in addition to implementing the UAX#29 Word Break rules. |
| (Steven Rowe, Robert Muir, Uwe Schindler) |
| |
| * LUCENE-2778: RAMDirectory now exposes newRAMFile() which allows to override |
| and return a different RAMFile implementation. (Shai Erera) |
| |
| * LUCENE-2785: Added TotalHitCountCollector whose sole purpose is to |
| count the number of hits matching the query. (Mike McCandless) |
| |
| * LUCENE-2846: Deprecated IndexReader.setNorm(int, String, float). This method |
| is only syntactic sugar for setNorm(int, String, byte), but using the global |
| Similarity.getDefault().encodeNormValue(). Use the byte-based method instead |
| to ensure that the norm is encoded with your Similarity. |
| (Robert Muir, Mike McCandless) |
| |
| * LUCENE-2374: Added Attribute reflection API: It's now possible to inspect the |
| contents of AttributeImpl and AttributeSource using a well-defined API. |
| This is e.g. used by Solr's AnalysisRequestHandlers to display all attributes |
| in a structured way. |
| There are also some backwards incompatible changes in toString() output, |
| as LUCENE-2302 introduced the CharSequence interface to CharTermAttribute |
| leading to changed toString() return values. The new API allows to get a |
| string representation in a well-defined way using a new method |
| reflectAsString(). For backwards compatibility reasons, when toString() |
| was implemented by implementation subclasses, the default implementation of |
| AttributeImpl.reflectWith() uses toString()s output instead to report the |
| Attribute's properties. Otherwise, reflectWith() uses Java's reflection |
| (like toString() did before) to get the attribute properties. |
| In addition, the mandatory equals() and hashCode() are no longer required |
| for AttributeImpls, but can still be provided (if needed). |
| (Uwe Schindler) |
| |
| * LUCENE-2691: Deprecate IndexWriter.getReader in favor of |
| IndexReader.open(IndexWriter) (Grant Ingersoll, Mike McCandless) |
| |
| * LUCENE-2876: Deprecated Scorer.getSimilarity(). If your Scorer uses a Similarity, |
| it should keep it itself. Fixed Scorers to pass their parent Weight, so that |
| Scorer.visitSubScorers (LUCENE-2590) will work correctly. |
| (Robert Muir, Doron Cohen) |
| |
| * LUCENE-2900: When opening a near-real-time (NRT) reader |
| (IndexReader.re/open(IndexWriter)) you can now specify whether |
| deletes should be applied. Applying deletes can be costly, and some |
| expert use cases can handle seeing deleted documents returned. The |
| deletes remain buffered so that the next time you open an NRT reader |
| and pass true, all deletes will be a applied. (Mike McCandless) |
| |
| * LUCENE-1253: LengthFilter (and Solr's KeepWordTokenFilter) now |
| require up front specification of enablePositionIncrement. Together with |
| StopFilter they have a common base class (FilteringTokenFilter) that handles |
| the position increments automatically. Implementors only need to override an |
| accept() method that filters tokens. (Uwe Schindler, Robert Muir) |
| |
| Bug fixes |
| |
| * LUCENE-2249: ParallelMultiSearcher should shut down thread pool on |
| close. (Martin Traverso via Uwe Schindler) |
| |
| * LUCENE-2273: FieldCacheImpl.getCacheEntries() used WeakHashMap |
| incorrectly and lead to ConcurrentModificationException. |
| (Uwe Schindler, Robert Muir) |
| |
| * LUCENE-2328: Index files fsync tracking moved from |
| IndexWriter/IndexReader to Directory, and it no longer leaks memory. |
| (Earwin Burrfoot via Mike McCandless) |
| |
| * LUCENE-2074: Reduce buffer size of lexer back to default on reset. |
| (Ruben Laguna, Shai Erera via Uwe Schindler) |
| |
| * LUCENE-2496: Don't throw NPE if IndexWriter is opened with CREATE on |
| a prior (corrupt) index missing its segments_N file. (Mike |
| McCandless) |
| |
| * LUCENE-2458: QueryParser no longer automatically forms phrase queries, |
| assuming whitespace tokenization. Previously all CJK queries, for example, |
| would be turned into phrase queries. The old behavior is preserved with |
| the matchVersion parameter for previous versions. Additionally, you can |
| explicitly enable the old behavior with setAutoGeneratePhraseQueries(true) |
| (Robert Muir) |
| |
| * LUCENE-2537: FSDirectory.copy() implementation was unsafe and could result in |
| OOM if a large file was copied. (Shai Erera) |
| |
| * LUCENE-2580: MultiPhraseQuery throws AIOOBE if number of positions |
| exceeds number of terms at one position (Jayendra Patil via Mike McCandless) |
| |
| * LUCENE-2617: Optional clauses of a BooleanQuery were not factored |
| into coord if the scorer for that segment returned null. This |
| can cause the same document to score to differently depending on |
| what segment it resides in. (yonik) |
| |
| * LUCENE-2272: Fix explain in PayloadNearQuery and also fix scoring issue (Peter Keegan via Grant Ingersoll) |
| |
| * LUCENE-2732: Fix charset problems in XML loading in |
| HyphenationCompoundWordTokenFilter. (Uwe Schindler) |
| |
| * LUCENE-2802: NRT DirectoryReader returned incorrect values from |
| getVersion, isOptimized, getCommitUserData, getIndexCommit and isCurrent due |
| to a mutable reference to the IndexWriters SegmentInfos. |
| (Simon Willnauer, Earwin Burrfoot) |
| |
| * LUCENE-2852: Fixed corner case in RAMInputStream that would hit a |
| false EOF after seeking to EOF then seeking back to same block you |
| were just in and then calling readBytes (Robert Muir, Mike McCandless) |
| |
| * LUCENE-2860: Fixed SegmentInfo.sizeInBytes to factor includeDocStores when it |
| decides whether to return the cached computed size or not. (Shai Erera) |
| |
| * LUCENE-2584: SegmentInfo.files() could hit ConcurrentModificationException if |
| called by multiple threads. (Alexander Kanarsky via Shai Erera) |
| |
| * LUCENE-2809: Fixed IndexWriter.numDocs to take into account |
| applied but not yet flushed deletes. (Mike McCandless) |
| |
| * LUCENE-2879: MultiPhraseQuery previously calculated its phrase IDF by summing |
| internally, it now calls Similarity.idfExplain(Collection, IndexSearcher). |
| (Robert Muir) |
| |
| * LUCENE-2693: RAM used by IndexWriter was slightly incorrectly computed. |
| (Jason Rutherglen via Shai Erera) |
| |
| * LUCENE-1846: DateTools now uses the US locale everywhere, so DateTools.round() |
| is safe also in strange locales. (Uwe Schindler) |
| |
| * LUCENE-2891: IndexWriterConfig did not accept -1 in setReaderTermIndexDivisor, |
| which can be used to prevent loading the terms index into memory. (Shai Erera) |
| |
| * LUCENE-2937: Encoding a float into a byte (e.g. encoding field norms during |
| indexing) had an underflow detection bug that caused floatToByte(f)==0 where |
| f was greater than 0, but slightly less than byteToFloat(1). This meant that |
| certain very small field norms (index_boost * length_norm) could have |
| been rounded down to 0 instead of being rounded up to the smallest |
| positive number. (yonik) |
| |
| * LUCENE-2936: PhraseQuery score explanations were not correctly |
| identifying matches vs non-matches. (hossman) |
| |
| * LUCENE-2975: A hotspot bug corrupts IndexInput#readVInt()/readVLong() if |
| the underlying readByte() is inlined (which happens e.g. in MMapDirectory). |
| The loop was unwinded which makes the hotspot bug disappear. |
| (Uwe Schindler, Robert Muir, Mike McCandless) |
| |
| New features |
| |
| * LUCENE-2128: Parallelized fetching document frequencies during weight |
| creation. (Israel Tsadok, Simon Willnauer via Uwe Schindler) |
| |
| * LUCENE-2069: Added Unicode 4 support to CharArraySet. Due to the switch |
| to Java 5, supplementary characters are now lowercased correctly if the |
| set is created as case insensitive. |
| CharArraySet now requires a Version argument to preserve |
| backwards compatibility. If Version < 3.1 is passed to the constructor, |
| CharArraySet yields the old behavior. (Simon Willnauer) |
| |
| * LUCENE-2069: Added Unicode 4 support to LowerCaseFilter. Due to the switch |
| to Java 5, supplementary characters are now lowercased correctly. |
| LowerCaseFilter now requires a Version argument to preserve |
| backwards compatibility. If Version < 3.1 is passed to the constructor, |
| LowerCaseFilter yields the old behavior. (Simon Willnauer, Robert Muir) |
| |
| * LUCENE-2034: Added ReusableAnalyzerBase, an abstract subclass of Analyzer |
| that makes it easier to reuse TokenStreams correctly. This issue also added |
| StopwordAnalyzerBase, which improves consistency of all Analyzers that use |
| stopwords, and implement many analyzers in contrib with it. |
| (Simon Willnauer via Robert Muir) |
| |
| * LUCENE-2198, LUCENE-2901: Support protected words in stemming TokenFilters using a |
| new KeywordAttribute. (Simon Willnauer, Drew Farris via Uwe Schindler) |
| |
| * LUCENE-2183, LUCENE-2240, LUCENE-2241: Added Unicode 4 support |
| to CharTokenizer and its subclasses. CharTokenizer now has new |
| int-API which is conditionally preferred to the old char-API depending |
| on the provided Version. Version < 3.1 will use the char-API. |
| (Simon Willnauer via Uwe Schindler) |
| |
| * LUCENE-2247: Added a CharArrayMap<V> for performance improvements |
| in some stemmers and synonym filters. (Uwe Schindler) |
| |
| * LUCENE-2320: Added SetOnce which wraps an object and allows it to be set |
| exactly once. (Shai Erera via Mike McCandless) |
| |
| * LUCENE-2314: Added AttributeSource.copyTo(AttributeSource) that |
| allows to use cloneAttributes() and this method as a replacement |
| for captureState()/restoreState(), if the state itself |
| needs to be inspected/modified. (Uwe Schindler) |
| |
| * LUCENE-2293: Expose control over max number of threads that |
| IndexWriter will allow to run concurrently while indexing |
| documents (previously this was hardwired to 5), using |
| IndexWriterConfig.setMaxThreadStates. (Mike McCandless) |
| |
| * LUCENE-2297: Enable turning on reader pooling inside IndexWriter |
| even when getReader (near-real-timer reader) is not in use, through |
| IndexWriterConfig.enable/disableReaderPooling. (Mike McCandless) |
| |
| * LUCENE-2331: Add NoMergePolicy which never returns any merges to execute. In |
| addition, add NoMergeScheduler which never executes any merges. These two are |
| convenient classes in case you want to disable segment merges by IndexWriter |
| without tweaking a particular MergePolicy parameters, such as mergeFactor. |
| MergeScheduler's methods are now public. (Shai Erera via Mike McCandless) |
| |
| * LUCENE-2339: Deprecate static method Directory.copy in favor of |
| Directory.copyTo, and use nio's FileChannel.transferTo when copying |
| files between FSDirectory instances. (Earwin Burrfoot via Mike |
| McCandless). |
| |
| * LUCENE-2074: Make StandardTokenizer fit for Unicode 4.0, if the |
| matchVersion parameter is Version.LUCENE_31. (Uwe Schindler) |
| |
| * LUCENE-2385: Moved NoDeletionPolicy from benchmark to core. NoDeletionPolicy |
| can be used to prevent commits from ever getting deleted from the index. |
| (Shai Erera) |
| |
| * LUCENE-1585: IndexWriter now accepts a PayloadProcessorProvider which can |
| return a DirPayloadProcessor for a given Directory, which returns a |
| PayloadProcessor for a given Term. The PayloadProcessor will be used to |
| process the payloads of the segments as they are merged (e.g. if one wants to |
| rewrite payloads of external indexes as they are added, or of local ones). |
| (Shai Erera, Michael Busch, Mike McCandless) |
| |
| * LUCENE-2440: Add support for custom ExecutorService in |
| ParallelMultiSearcher (Edward Drapkin via Mike McCandless) |
| |
| * LUCENE-2295: Added a LimitTokenCountAnalyzer / LimitTokenCountFilter |
| to wrap any other Analyzer and provide the same functionality as |
| MaxFieldLength provided on IndexWriter. This patch also fixes a bug |
| in the offset calculation in CharTokenizer. (Uwe Schindler, Shai Erera) |
| |
| * LUCENE-2526: Don't throw NPE from MultiPhraseQuery.toString when |
| it's empty. (Ross Woolf via Mike McCandless) |
| |
| * LUCENE-2559: Added SegmentReader.reopen methods (John Wang via Mike |
| McCandless) |
| |
| * LUCENE-2590: Added Scorer.visitSubScorers, and Scorer.freq. Along |
| with a custom Collector these experimental methods make it possible |
| to gather the hit-count per sub-clause and per document while a |
| search is running. (Simon Willnauer, Mike McCandless) |
| |
| * LUCENE-2636: Added MultiCollector which allows running the search with several |
| Collectors. (Shai Erera) |
| |
| * LUCENE-2754, LUCENE-2757: Added a wrapper around MultiTermQueries |
| to add span support: SpanMultiTermQueryWrapper<Q extends MultiTermQuery>. |
| Using this wrapper its easy to add fuzzy/wildcard to e.g. a SpanNearQuery. |
| (Robert Muir, Uwe Schindler) |
| |
| * LUCENE-2838: ConstantScoreQuery now directly supports wrapping a Query |
| instance for stripping off scores. The use of a QueryWrapperFilter |
| is no longer needed and discouraged for that use case. Directly wrapping |
| Query improves performance, as out-of-order collection is now supported. |
| (Uwe Schindler) |
| |
| * LUCENE-2864: Add getMaxTermFrequency (maximum within-document TF) to |
| FieldInvertState so that it can be used in Similarity.computeNorm. |
| (Robert Muir) |
| |
| * LUCENE-2720: Segments now record the code version which created them. |
| (Shai Erera, Mike McCandless, Uwe Schindler) |
| |
| * LUCENE-2474: Added expert ReaderFinishedListener API to |
| IndexReader, to allow apps that maintain external per-segment caches |
| to evict entries when a segment is finished. (Shay Banon, Yonik |
| Seeley, Mike McCandless) |
| |
| * LUCENE-2911: The new StandardTokenizer, UAX29URLEmailTokenizer, and |
| the ICUTokenizer in contrib now all tag types with a consistent set |
| of token types (defined in StandardTokenizer). Tokens in the major |
| CJK types are explicitly marked to allow for custom downstream handling: |
| <IDEOGRAPHIC>, <HANGUL>, <KATAKANA>, and <HIRAGANA>. |
| (Robert Muir, Steven Rowe) |
| |
| * LUCENE-2913: Add missing getters to Numeric* classes. (Uwe Schindler) |
| |
| * LUCENE-1810: Added FieldSelectorResult.LATENT to not cache lazy loaded fields |
| (Tim Smith, Grant Ingersoll) |
| |
| * LUCENE-2692: Added several new SpanQuery classes for positional checking |
| (match is in a range, payload is a specific value) (Grant Ingersoll) |
| |
| Optimizations |
| |
| * LUCENE-2494: Use CompletionService in ParallelMultiSearcher instead of |
| simple polling for results. (Edward Drapkin, Simon Willnauer) |
| |
| * LUCENE-2075: Terms dict cache is now shared across threads instead |
| of being stored separately in thread local storage. Also fixed |
| terms dict so that the cache is used when seeking the thread local |
| term enum, which will be important for MultiTermQuery impls that do |
| lots of seeking (Mike McCandless, Uwe Schindler, Robert Muir, Yonik |
| Seeley) |
| |
| * LUCENE-2136: If the multi reader (DirectoryReader or MultiReader) |
| only has a single sub-reader, delegate all enum requests to it. |
| This avoid the overhead of using a PQ unnecessarily. (Mike |
| McCandless) |
| |
| * LUCENE-2137: Switch to AtomicInteger for some ref counting (Earwin |
| Burrfoot via Mike McCandless) |
| |
| * LUCENE-2123, LUCENE-2261: Move FuzzyQuery rewrite to separate RewriteMode |
| into MultiTermQuery. The number of fuzzy expansions can be specified with |
| the maxExpansions parameter to FuzzyQuery. |
| (Uwe Schindler, Robert Muir, Mike McCandless) |
| |
| * LUCENE-2164: ConcurrentMergeScheduler has more control over merge |
| threads. First, it gives smaller merges higher thread priority than |
| larges ones. Second, a new set/getMaxMergeCount setting will pause |
| the larger merges to allow smaller ones to finish. The defaults for |
| these settings are now dynamic, depending the number CPU cores as |
| reported by Runtime.getRuntime().availableProcessors() (Mike |
| McCandless) |
| |
| * LUCENE-2169: Improved CharArraySet.copy(), if source set is |
| also a CharArraySet. (Simon Willnauer via Uwe Schindler) |
| |
| * LUCENE-2084: Change IndexableBinaryStringTools to work on byte[] and char[] |
| directly, instead of Byte/CharBuffers, and modify CollationKeyFilter to |
| take advantage of this for faster performance. |
| (Steven Rowe, Uwe Schindler, Robert Muir) |
| |
| * LUCENE-2188: Add a utility class for tracking deprecated overridden |
| methods in non-final subclasses. |
| (Uwe Schindler, Robert Muir) |
| |
| * LUCENE-2195: Speedup CharArraySet if set is empty. |
| (Simon Willnauer via Robert Muir) |
| |
| * LUCENE-2285: Code cleanup. (Shai Erera via Uwe Schindler) |
| |
| * LUCENE-2303: Remove code duplication in Token class by subclassing |
| TermAttributeImpl, move DEFAULT_TYPE constant to TypeInterface, improve |
| null-handling for TypeAttribute. (Uwe Schindler) |
| |
| * LUCENE-2329: Switch TermsHash* from using a PostingList object per unique |
| term to parallel arrays, indexed by termID. This reduces garbage collection |
| overhead significantly, which results in great indexing performance wins |
| when the available JVM heap space is low. This will become even more |
| important when the DocumentsWriter RAM buffer is searchable in the future, |
| because then it will make sense to make the RAM buffers as large as |
| possible. (Mike McCandless, Michael Busch) |
| |
| * LUCENE-2380: The terms field cache methods (getTerms, |
| getTermsIndex), which replace the older String equivalents |
| (getStrings, getStringIndex), consume quite a bit less RAM in most |
| cases. (Mike McCandless) |
| |
| * LUCENE-2410: ~20% speedup on exact (slop=0) PhraseQuery matching. |
| (Mike McCandless) |
| |
| * LUCENE-2531: Fix issue when sorting by a String field that was |
| causing too many fallbacks to compare-by-value (instead of by-ord). |
| (Mike McCandless) |
| |
| * LUCENE-2574: IndexInput exposes copyBytes(IndexOutput, long) to allow for |
| efficient copying by sub-classes. Optimized copy is implemented for RAM and FS |
| streams. (Shai Erera) |
| |
| * LUCENE-2719: Improved TermsHashPerField's sorting to use a better |
| quick sort algorithm that dereferences the pivot element not on |
| every compare call. Also replaced lots of sorting code in Lucene |
| by the improved SorterTemplate class. |
| (Uwe Schindler, Robert Muir, Mike McCandless) |
| |
| * LUCENE-2760: Optimize SpanFirstQuery and SpanPositionRangeQuery. |
| (Robert Muir) |
| |
| * LUCENE-2770: Make SegmentMerger always work on atomic subreaders, |
| even when IndexWriter.addIndexes(IndexReader...) is used with |
| DirectoryReaders or other MultiReaders. This saves lots of memory |
| during merge of norms. (Uwe Schindler, Mike McCandless) |
| |
| * LUCENE-2824: Optimize BufferedIndexInput to do less bounds checks. |
| (Robert Muir) |
| |
| * LUCENE-2010: Segments with 100% deleted documents are now removed on |
| IndexReader or IndexWriter commit. (Uwe Schindler, Mike McCandless) |
| |
| * LUCENE-1472: Removed synchronization from static DateTools methods |
| by using a ThreadLocal. Also converted DateTools.Resolution to a |
| Java 5 enum (this should not break backwards). (Uwe Schindler) |
| |
| Build |
| |
| * LUCENE-2124: Moved the JDK-based collation support from contrib/collation |
| into core, and moved the ICU-based collation support into contrib/icu. |
| (Robert Muir) |
| |
| * LUCENE-2326: Removed SVN checkouts for backwards tests. The backwards |
| branch is now included in the svn repository using "svn copy" |
| after release. (Uwe Schindler) |
| |
| * LUCENE-2074: Regenerating StandardTokenizerImpl files now needs |
| JFlex 1.5 (currently only available on SVN). (Uwe Schindler) |
| |
| * LUCENE-1709: Tests are now parallelized by default (except for benchmark). You |
| can force them to run sequentially by passing -Drunsequential=1 on the command |
| line. The number of threads that are spawned per CPU defaults to '1'. If you |
| wish to change that, you can run the tests with -DthreadsPerProcessor=[num]. |
| (Robert Muir, Shai Erera, Peter Kofler) |
| |
| * LUCENE-2516: Backwards tests are now compiled against released lucene-core.jar |
| from tarball of previous version. Backwards tests are now packaged together |
| with src distribution. (Uwe Schindler) |
| |
| * LUCENE-2611: Added Ant target to install IntelliJ IDEA configuration: |
| "ant idea". See http://wiki.apache.org/lucene-java/HowtoConfigureIntelliJ |
| (Steven Rowe) |
| |
| * LUCENE-2657: Switch from using Maven POM templates to full POMs when |
| generating Maven artifacts (Steven Rowe) |
| |
| * LUCENE-2609: Added jar-test-framework Ant target which packages Lucene's |
| tests' framework classes. (Drew Farris, Grant Ingersoll, Shai Erera, |
| Steven Rowe) |
| |
| Test Cases |
| |
| * LUCENE-2037 Allow Junit4 tests in our environment (Erick Erickson |
| via Mike McCandless) |
| |
| * LUCENE-1844: Speed up the unit tests (Mark Miller, Erick Erickson, |
| Mike McCandless) |
| |
| * LUCENE-2065: Use Java 5 generics throughout our unit tests. (Kay |
| Kay via Mike McCandless) |
| |
| * LUCENE-2155: Fix time and zone dependent localization test failures |
| in queryparser tests. (Uwe Schindler, Chris Male, Robert Muir) |
| |
| * LUCENE-2170: Fix thread starvation problems. (Uwe Schindler) |
| |
| * LUCENE-2248, LUCENE-2251, LUCENE-2285: Refactor tests to not use |
| Version.LUCENE_CURRENT, but instead use a global static value |
| from LuceneTestCase(J4), that contains the release version. |
| (Uwe Schindler, Simon Willnauer, Shai Erera) |
| |
| * LUCENE-2313, LUCENE-2322: Add VERBOSE to LuceneTestCase(J4) to control |
| verbosity of tests. If VERBOSE==false (default) tests should not print |
| anything other than errors to System.(out|err). The setting can be |
| changed with -Dtests.verbose=true on test invocation. |
| (Shai Erera, Paul Elschot, Uwe Schindler) |
| |
| * LUCENE-2318: Remove inconsistent system property code for retrieving |
| temp and data directories inside test cases. It is now centralized in |
| LuceneTestCase(J4). Also changed lots of tests to use |
| getClass().getResourceAsStream() to retrieve test data. Tests needing |
| access to "real" files from the test folder itself, can use |
| LuceneTestCase(J4).getDataFile(). (Uwe Schindler) |
| |
| * LUCENE-2398, LUCENE-2611: Improve tests to work better from IDEs such |
| as Eclipse and IntelliJ. |
| (Paolo Castagna, Steven Rowe via Robert Muir) |
| |
| * LUCENE-2804: add newFSDirectory to LuceneTestCase to create a FSDirectory at |
| random. (Shai Erera, Robert Muir) |
| |
| Documentation |
| |
| * LUCENE-2579: Fix oal.search's package.html description of abstract |
| methods. (Santiago M. Mola via Mike McCandless) |
| |
| * LUCENE-2625: Add a note to IndexReader.termDocs() with additional verbiage |
| that the TermEnum must be seeked since it is unpositioned. |
| (Adriano Crestani via Robert Muir) |
| |
| * LUCENE-2894: Use google-code-prettify for syntax highlighting in javadoc. |
| (Shinichiro Abe, Koji Sekiguchi) |
| |
| ================== Release 2.9.4 / 3.0.3 ==================== |
| |
| Changes in runtime behavior |
| |
| * LUCENE-2689: NativeFSLockFactory no longer attempts to acquire a |
| test lock just before the real lock is acquired. (Surinder Pal |
| Singh Bindra via Mike McCandless) |
| |
| * LUCENE-2762: Fixed bug in IndexWriter causing it to hold open file |
| handles against deleted files when compound-file was enabled (the |
| default) and readers are pooled. As a result of this the peak |
| worst-case free disk space required during optimize is now 3X the |
| index size, when compound file is enabled (else 2X). (Mike |
| McCandless) |
| |
| * LUCENE-2773: LogMergePolicy accepts a double noCFSRatio (default = |
| 0.1), which means any time a merged segment is greater than 10% of |
| the index size, it will be left in non-compound format even if |
| compound format is on. This change was made to reduce peak |
| transient disk usage during optimize which increased due to |
| LUCENE-2762. (Mike McCandless) |
| |
| Bug fixes |
| |
| * LUCENE-2142 (correct fix): FieldCacheImpl.getStringIndex no longer |
| throws an exception when term count exceeds doc count. |
| (Mike McCandless, Uwe Schindler) |
| |
| * LUCENE-2513: when opening writable IndexReader on a not-current |
| commit, do not overwrite "future" commits. (Mike McCandless) |
| |
| * LUCENE-2536: IndexWriter.rollback was failing to properly rollback |
| buffered deletions against segments that were flushed (Mark Harwood |
| via Mike McCandless) |
| |
| * LUCENE-2541: Fixed NumericRangeQuery that returned incorrect results |
| with endpoints near Long.MIN_VALUE and Long.MAX_VALUE: |
| NumericUtils.splitRange() overflowed, if |
| - the range contained a LOWER bound |
| that was greater than (Long.MAX_VALUE - (1L << precisionStep)) |
| - the range contained an UPPER bound |
| that was less than (Long.MIN_VALUE + (1L << precisionStep)) |
| With standard precision steps around 4, this had no effect on |
| most queries, only those that met the above conditions. |
| Queries with large precision steps failed more easy. Queries with |
| precision step >=64 were not affected. Also 32 bit data types int |
| and float were not affected. |
| (Yonik Seeley, Uwe Schindler) |
| |
| * LUCENE-2593: Fixed certain rare cases where a disk full could lead |
| to a corrupted index (Robert Muir, Mike McCandless) |
| |
| * LUCENE-2620: Fixed a bug in WildcardQuery where too many asterisks |
| would result in unbearably slow performance. (Nick Barkas via Robert Muir) |
| |
| * LUCENE-2627: Fixed bug in MMapDirectory chunking when a file is an |
| exact multiple of the chunk size. (Robert Muir) |
| |
| * LUCENE-2634: isCurrent on an NRT reader was failing to return false |
| if the writer had just committed (Nikolay Zamosenchuk via Mike McCandless) |
| |
| * LUCENE-2650: Added extra safety to MMapIndexInput clones to prevent accessing |
| an unmapped buffer if the input is closed (Mike McCandless, Uwe Schindler, Robert Muir) |
| |
| * LUCENE-2384: Reset zzBuffer in StandardTokenizerImpl when lexer is reset. |
| (Ruben Laguna via Uwe Schindler, sub-issue of LUCENE-2074) |
| |
| * LUCENE-2658: Exceptions while processing term vectors enabled for multiple |
| fields could lead to invalid ArrayIndexOutOfBoundsExceptions. |
| (Robert Muir, Mike McCandless) |
| |
| * LUCENE-2235: Implement missing PerFieldAnalyzerWrapper.getOffsetGap(). |
| (Javier Godoy via Uwe Schindler) |
| |
| * LUCENE-2328: Fixed memory leak in how IndexWriter/Reader tracked |
| already sync'd files. (Earwin Burrfoot via Mike McCandless) |
| |
| * LUCENE-2549: Fix TimeLimitingCollector#TimeExceededException to record |
| the absolute docid. (Uwe Schindler) |
| |
| * LUCENE-2533: fix FileSwitchDirectory.listAll to not return dups when |
| primary & secondary dirs share the same underlying directory. |
| (Michael McCandless) |
| |
| * LUCENE-2365: IndexWriter.newestSegment (used normally for testing) |
| is fixed to return null if there are no segments. (Karthick |
| Sankarachary via Mike McCandless) |
| |
| * LUCENE-2730: Fix two rare deadlock cases in IndexWriter (Mike McCandless) |
| |
| * LUCENE-2744: CheckIndex was stating total number of fields, |
| not the number that have norms enabled, on the "test: field |
| norms..." output. (Mark Kristensson via Mike McCandless) |
| |
| * LUCENE-2759: Fixed two near-real-time cases where doc store files |
| may be opened for read even though they are still open for write. |
| (Mike McCandless) |
| |
| * LUCENE-2618: Fix rare thread safety issue whereby |
| IndexWriter.optimize could sometimes return even though the index |
| wasn't fully optimized (Mike McCandless) |
| |
| * LUCENE-2767: Fix thread safety issue in addIndexes(IndexReader[]) |
| that could potentially result in index corruption. (Mike |
| McCandless) |
| |
| * LUCENE-2762: Fixed bug in IndexWriter causing it to hold open file |
| handles against deleted files when compound-file was enabled (the |
| default) and readers are pooled. As a result of this the peak |
| worst-case free disk space required during optimize is now 3X the |
| index size, when compound file is enabled (else 2X). (Mike |
| McCandless) |
| |
| * LUCENE-2216: OpenBitSet.hashCode returned different hash codes for |
| sets that only differed by trailing zeros. (Dawid Weiss, yonik) |
| |
| * LUCENE-2782: Fix rare potential thread hazard with |
| IndexWriter.commit (Mike McCandless) |
| |
| API Changes |
| |
| * LUCENE-2773: LogMergePolicy accepts a double noCFSRatio (default = |
| 0.1), which means any time a merged segment is greater than 10% of |
| the index size, it will be left in non-compound format even if |
| compound format is on. This change was made to reduce peak |
| transient disk usage during optimize which increased due to |
| LUCENE-2762. (Mike McCandless) |
| |
| Optimizations |
| |
| * LUCENE-2556: Improve memory usage after cloning TermAttribute. |
| (Adriano Crestani via Uwe Schindler) |
| |
| * LUCENE-2098: Improve the performance of BaseCharFilter, especially for |
| large documents. (Robin Wojciki, Koji Sekiguchi, Robert Muir) |
| |
| New features |
| |
| * LUCENE-2675 (2.9.4 only): Add support for Lucene 3.0 stored field files |
| also in 2.9. The file format did not change, only the version number was |
| upgraded to mark segments that have no compression. FieldsWriter still only |
| writes 2.9 segments as they could contain compressed fields. This cross-version |
| index format compatibility is provided here solely because Lucene 2.9 and 3.0 |
| have the same bugfix level, features, and the same index format with this slight |
| compression difference. In general, Lucene does not support reading newer |
| indexes with older library versions. (Uwe Schindler) |
| |
| Documentation |
| |
| * LUCENE-2239: Documented limitations in NIOFSDirectory and MMapDirectory due to |
| Java NIO behavior when a Thread is interrupted while blocking on IO. |
| (Simon Willnauer, Robert Muir) |
| |
| ================== Release 2.9.3 / 3.0.2 ==================== |
| |
| Changes in backwards compatibility policy |
| |
| * LUCENE-2135: Added FieldCache.purge(IndexReader) method to the |
| interface. Anyone implementing FieldCache externally will need to |
| fix their code to implement this, on upgrading. (Mike McCandless) |
| |
| Changes in runtime behavior |
| |
| * LUCENE-2421: NativeFSLockFactory does not throw LockReleaseFailedException if |
| it cannot delete the lock file, since obtaining the lock does not fail if the |
| file is there. (Shai Erera) |
| |
| * LUCENE-2060 (2.9.3 only): Changed ConcurrentMergeScheduler's default for |
| maxNumThreads from 3 to 1, because in practice we get the most gains |
| from running a single merge in the backround. More than one |
| concurrent merge causes alot of thrashing (though it's possible on |
| SSD storage that there would be net gains). (Jason Rutherglen, Mike |
| McCandless) |
| |
| Bug fixes |
| |
| * LUCENE-2046 (2.9.3 only): IndexReader should not see the index as changed, after |
| IndexWriter.prepareCommit has been called but before |
| IndexWriter.commit is called. (Peter Keegan via Mike McCandless) |
| |
| * LUCENE-2119: Don't throw NegativeArraySizeException if you pass |
| Integer.MAX_VALUE as nDocs to IndexSearcher search methods. (Paul |
| Taylor via Mike McCandless) |
| |
| * LUCENE-2142: FieldCacheImpl.getStringIndex no longer throws an |
| exception when term count exceeds doc count. (Mike McCandless) |
| |
| * LUCENE-2104: NativeFSLock.release() would silently fail if the lock is held by |
| another thread/process. (Shai Erera via Uwe Schindler) |
| |
| * LUCENE-2283: Use shared memory pool for term vector and stored |
| fields buffers. This memory will be reclaimed if needed according to |
| the configured RAM Buffer Size for the IndexWriter. This also fixes |
| potentially excessive memory usage when many threads are indexing a |
| mix of small and large documents. (Tim Smith via Mike McCandless) |
| |
| * LUCENE-2300: If IndexWriter is pooling reader (because NRT reader |
| has been obtained), and addIndexes* is run, do not pool the |
| readers from the external directory. This is harmless (NRT reader is |
| correct), but a waste of resources. (Mike McCandless) |
| |
| * LUCENE-2422: Don't reuse byte[] in IndexInput/Output -- it gains |
| little performance, and ties up possibly large amounts of memory |
| for apps that index large docs. (Ross Woolf via Mike McCandless) |
| |
| * LUCENE-2387: Don't hang onto Fieldables from the last doc indexed, |
| in IndexWriter, nor the Reader in Tokenizer after close is |
| called. (Ruben Laguna, Uwe Schindler, Mike McCandless) |
| |
| * LUCENE-2417: IndexCommit did not implement hashCode() and equals() |
| consistently. Now they both take Directory and version into consideration. In |
| addition, all of IndexComnmit methods which threw |
| UnsupportedOperationException are now abstract. (Shai Erera) |
| |
| * LUCENE-2467: Fixed memory leaks in IndexWriter when large documents |
| are indexed. (Mike McCandless) |
| |
| * LUCENE-2473: Clicking on the "More Results" link in the luceneweb.war |
| demo resulted in ArrayIndexOutOfBoundsException. |
| (Sami Siren via Robert Muir) |
| |
| * LUCENE-2476: If any exception is hit init'ing IW, release the write |
| lock (previously we only released on IOException). (Tamas Cservenak |
| via Mike McCandless) |
| |
| * LUCENE-2478: Fix CachingWrapperFilter to not throw NPE when |
| Filter.getDocIdSet() returns null. (Uwe Schindler, Daniel Noll) |
| |
| * LUCENE-2468: Allow specifying how new deletions should be handled in |
| CachingWrapperFilter and CachingSpanFilter. By default, new |
| deletions are ignored in CachingWrapperFilter, since typically this |
| filter is AND'd with a query that correctly takes new deletions into |
| account. This should be a performance gain (higher cache hit rate) |
| in apps that reopen readers, or use near-real-time reader |
| (IndexWriter.getReader()), but may introduce invalid search results |
| (allowing deleted docs to be returned) for certain cases, so a new |
| expert ctor was added to CachingWrapperFilter to enforce deletions |
| at a performance cost. CachingSpanFilter by default recaches if |
| there are new deletions (Shay Banon via Mike McCandless) |
| |
| * LUCENE-2299: If you open an NRT reader while addIndexes* is running, |
| it may miss some segments (Earwin Burrfoot via Mike McCandless) |
| |
| * LUCENE-2397: Don't throw NPE from SnapshotDeletionPolicy.snapshot if |
| there are no commits yet (Shai Erera) |
| |
| * LUCENE-2424: Fix FieldDoc.toString to actually return its fields |
| (Stephen Green via Mike McCandless) |
| |
| * LUCENE-2311: Always pass a "fully loaded" (terms index & doc stores) |
| SegmentsReader to IndexWriter's mergedSegmentWarmer (if set), so |
| that warming is free to do whatever it needs to. (Earwin Burrfoot |
| via Mike McCandless) |
| |
| * LUCENE-3029: Fix corner case when MultiPhraseQuery is used with zero |
| position-increment tokens that would sometimes assign different |
| scores to identical docs. (Mike McCandless) |
| |
| * LUCENE-2486: Fixed intermittent FileNotFoundException on doc store |
| files when a mergedSegmentWarmer is set on IndexWriter. (Mike |
| McCandless) |
| |
| * LUCENE-2130: Fix performance issue when FuzzyQuery runs on a |
| multi-segment index (Michael McCandless) |
| |
| API Changes |
| |
| * LUCENE-2281: added doBeforeFlush to IndexWriter to allow extensions to perform |
| operations before flush starts. Also exposed doAfterFlush as protected instead |
| of package-private. (Shai Erera via Mike McCandless) |
| |
| * LUCENE-2356: Add IndexWriter.set/getReaderTermsIndexDivisor, to set |
| what IndexWriter passes for termsIndexDivisor to the readers it |
| opens internally when applying deletions or creating a |
| near-real-time reader. (Earwin Burrfoot via Mike McCandless) |
| |
| Optimizations |
| |
| * LUCENE-2494 (3.0.2 only): Use CompletionService in ParallelMultiSearcher |
| instead of simple polling for results. (Edward Drapkin, Simon Willnauer) |
| |
| * LUCENE-2135: On IndexReader.close, forcefully evict any entries from |
| the FieldCache rather than waiting for the WeakHashMap to release |
| the reference (Mike McCandless) |
| |
| * LUCENE-2161: Improve concurrency of IndexReader, especially in the |
| context of near real-time readers. (Mike McCandless) |
| |
| * LUCENE-2360: Small speedup to recycling of reused per-doc RAM in |
| IndexWriter (Robert Muir, Mike McCandless) |
| |
| Build |
| |
| * LUCENE-2488 (2.9.3 only): Support build with JDK 1.4 and exclude Java 1.5 |
| contrib modules on request (pass '-Dforce.jdk14.build=true') when |
| compiling/testing/packaging. This marks the benchmark contrib also |
| as Java 1.5, as it depends on fast-vector-highlighter. (Uwe Schindler) |
| |
| ================== Release 2.9.2 / 3.0.1 ==================== |
| |
| Changes in backwards compatibility policy |
| |
| * LUCENE-2123 (3.0.1 only): Removed the protected inner class ScoreTerm |
| from FuzzyQuery. The change was needed because the comparator of this |
| class had to be changed in an incompatible way. The class was never |
| intended to be public. (Uwe Schindler, Mike McCandless) |
| |
| Bug fixes |
| |
| * LUCENE-2092: BooleanQuery was ignoring disableCoord in its hashCode |
| and equals methods, cause bad things to happen when caching |
| BooleanQueries. (Chris Hostetter, Mike McCandless) |
| |
| * LUCENE-2095: Fixes: when two threads call IndexWriter.commit() at |
| the same time, it's possible for commit to return control back to |
| one of the threads before all changes are actually committed. |
| (Sanne Grinovero via Mike McCandless) |
| |
| * LUCENE-2132 (3.0.1 only): Fix the demo result.jsp to use QueryParser |
| with a Version argument. (Brian Li via Robert Muir) |
| |
| * LUCENE-2166: Don't incorrectly keep warning about the same immense |
| term, when IndexWriter.infoStream is on. (Mike McCandless) |
| |
| * LUCENE-2158: At high indexing rates, NRT reader could temporarily |
| lose deletions. (Mike McCandless) |
| |
| * LUCENE-2182: DEFAULT_ATTRIBUTE_FACTORY was failing to load |
| implementation class when interface was loaded by a different |
| class loader. (Uwe Schindler, reported on java-user by Ahmed El-dawy) |
| |
| * LUCENE-2257: Increase max number of unique terms in one segment to |
| termIndexInterval (default 128) * ~2.1 billion = ~274 billion. |
| (Tom Burton-West via Mike McCandless) |
| |
| * LUCENE-2260: Fixed AttributeSource to not hold a strong |
| reference to the Attribute/AttributeImpl classes which prevents |
| unloading of custom attributes loaded by other classloaders |
| (e.g. in Solr plugins). (Uwe Schindler) |
| |
| * LUCENE-1941: Fix Min/MaxPayloadFunction returns 0 when |
| only one payload is present. (Erik Hatcher, Mike McCandless |
| via Uwe Schindler) |
| |
| * LUCENE-2270: Queries consisting of all zero-boost clauses |
| (for example, text:foo^0) sorted incorrectly and produced |
| invalid docids. (yonik) |
| |
| API Changes |
| |
| * LUCENE-1609 (3.0.1 only): Restore IndexReader.getTermInfosIndexDivisor |
| (it was accidentally removed in 3.0.0) (Mike McCandless) |
| |
| * LUCENE-1972 (3.0.1 only): Restore SortField.getComparatorSource |
| (it was accidentally removed in 3.0.0) (John Wang via Uwe Schindler) |
| |
| * LUCENE-2190: Added a new class CustomScoreProvider to function package |
| that can be subclassed to provide custom scoring to CustomScoreQuery. |
| The methods in CustomScoreQuery that did this before were deprecated |
| and replaced by a method getCustomScoreProvider(IndexReader) that |
| returns a custom score implementation using the above class. The change |
| is necessary with per-segment searching, as CustomScoreQuery is |
| a stateless class (like all other Queries) and does not know about |
| the currently searched segment. This API works similar to Filter's |
| getDocIdSet(IndexReader). (Paul chez Jamespot via Mike McCandless, |
| Uwe Schindler) |
| |
| * LUCENE-2080: Deprecate Version.LUCENE_CURRENT, as using this constant |
| will cause backwards compatibility problems when upgrading Lucene. See |
| the Version javadocs for additional information. |
| (Robert Muir) |
| |
| Optimizations |
| |
| * LUCENE-2086: When resolving deleted terms, do so in term sort order |
| for better performance (Bogdan Ghidireac via Mike McCandless) |
| |
| * LUCENE-2123 (partly, 3.0.1 only): Fixes a slowdown / memory issue |
| added by LUCENE-504. (Uwe Schindler, Robert Muir, Mike McCandless) |
| |
| * LUCENE-2258: Remove unneeded synchronization in FuzzyTermEnum. |
| (Uwe Schindler, Robert Muir) |
| |
| Test Cases |
| |
| * LUCENE-2114: Change TestFilteredSearch to test on multi-segment |
| index as well. (Simon Willnauer via Mike McCandless) |
| |
| * LUCENE-2211: Improves BaseTokenStreamTestCase to use a fake attribute |
| that checks if clearAttributes() was called correctly. |
| (Uwe Schindler, Robert Muir) |
| |
| * LUCENE-2207, LUCENE-2219: Improve BaseTokenStreamTestCase to check if |
| end() is implemented correctly. (Koji Sekiguchi, Robert Muir) |
| |
| Documentation |
| |
| * LUCENE-2114: Improve javadocs of Filter to call out that the |
| provided reader is per-segment (Simon Willnauer via Mike |
| McCandless) |
| |
| ======================= Release 3.0.0 ======================= |
| |
| Changes in backwards compatibility policy |
| |
| * LUCENE-1979: Change return type of SnapshotDeletionPolicy#snapshot() |
| from IndexCommitPoint to IndexCommit. Code that uses this method |
| needs to be recompiled against Lucene 3.0 in order to work. The |
| previously deprecated IndexCommitPoint is also removed. |
| (Michael Busch) |
| |
| * o.a.l.Lock.isLocked() is now allowed to throw an IOException. |
| (Mike McCandless) |
| |
| * LUCENE-2030: CachingWrapperFilter and CachingSpanFilter now hide |
| the internal cache implementation for thread safety, before it was |
| declared protected. (Peter Lenahan, Uwe Schindler, Simon Willnauer) |
| |
| * LUCENE-2053: If you call Thread.interrupt() on a thread inside |
| Lucene, Lucene will do its best to interrupt the thread. However, |
| instead of throwing InterruptedException (which is a checked |
| exception), you'll get an oal.util.ThreadInterruptedException (an |
| unchecked exception, subclassing RuntimeException). The interrupt |
| status on the thread is cleared when this exception is thrown. |
| (Mike McCandless) |
| |
| * LUCENE-2052: Some methods in Lucene core were changed to accept |
| Java 5 varargs. This is not a backwards compatibility problem as |
| long as you not try to override such a method. We left common |
| overridden methods unchanged and added varargs to constructors, |
| static, or final methods (MultiSearcher,...). (Uwe Schindler) |
| |
| * LUCENE-1558: IndexReader.open(Directory) now opens a readOnly=true |
| reader, and new IndexSearcher(Directory) does the same. Note that |
| this is a change in the default from 2.9, when these methods were |
| previously deprecated. (Mike McCandless) |
| |
| * LUCENE-1753: Make not yet final TokenStreams final to enforce |
| decorator pattern. (Uwe Schindler) |
| |
| Changes in runtime behavior |
| |
| * LUCENE-1677: Remove the system property to set SegmentReader class |
| implementation. (Uwe Schindler) |
| |
| * LUCENE-1960: As a consequence of the removal of Field.Store.COMPRESS, |
| support for this type of fields was removed. Lucene 3.0 is still able |
| to read indexes with compressed fields, but as soon as merges occur |
| or the index is optimized, all compressed fields are decompressed |
| and converted to Field.Store.YES. Because of this, indexes with |
| compressed fields can suddenly get larger. Also the first merge with |
| decompression cannot be done in raw mode, it is therefore slower. |
| This change has no effect for code that uses such old indexes, |
| they behave as before (fields are automatically decompressed |
| during read). Indexes converted to Lucene 3.0 format cannot be read |
| anymore with previous versions. |
| It is recommended to optimize your indexes after upgrading to convert |
| to the new format and decompress all fields. |
| If you want compressed fields, you can use CompressionTools, that |
| creates compressed byte[] to be added as binary stored field. This |
| cannot be done automatically, as you also have to decompress such |
| fields when reading. You have to reindex to do that. |
| (Michael Busch, Uwe Schindler) |
| |
| * LUCENE-2060: Changed ConcurrentMergeScheduler's default for |
| maxNumThreads from 3 to 1, because in practice we get the most |
| gains from running a single merge in the background. More than one |
| concurrent merge causes a lot of thrashing (though it's possible on |
| SSD storage that there would be net gains). (Jason Rutherglen, |
| Mike McCandless) |
| |
| API Changes |
| |
| * LUCENE-1257, LUCENE-1984, LUCENE-1985, LUCENE-2057, LUCENE-1833, LUCENE-2012, |
| LUCENE-1998: Port to Java 1.5: |
| |
| - Add generics to public and internal APIs (see below). |
| - Replace new Integer(int), new Double(double),... by static valueOf() calls. |
| - Replace for-loops with Iterator by foreach loops. |
| - Replace StringBuffer with StringBuilder. |
| - Replace o.a.l.util.Parameter by Java 5 enums (see below). |
| - Add @Override annotations. |
| (Uwe Schindler, Robert Muir, Karl Wettin, Paul Elschot, Kay Kay, Shai Erera, |
| DM Smith) |
| |
| * Generify Lucene API: |
| |
| - TokenStream/AttributeSource: Now addAttribute()/getAttribute() return an |
| instance of the requested attribute interface and no cast needed anymore |
| (LUCENE-1855). |
| - NumericRangeQuery, NumericRangeFilter, and FieldCacheRangeFilter |
| now have Integer, Long, Float, Double as type param (LUCENE-1857). |
| - Document.getFields() returns List<Fieldable>. |
| - Query.extractTerms(Set<Term>) |
| - CharArraySet and stop word sets in core/contrib |
| - PriorityQueue (LUCENE-1935) |
| - TopDocCollector |
| - DisjunctionMaxQuery (LUCENE-1984) |
| - MultiTermQueryWrapperFilter |
| - CloseableThreadLocal |
| - MapOfSets |
| - o.a.l.util.cache package |
| - lot's of internal APIs of IndexWriter |
| (Uwe Schindler, Michael Busch, Kay Kay, Robert Muir, Adriano Crestani) |
| |
| * LUCENE-1944, LUCENE-1856, LUCENE-1957, LUCENE-1960, LUCENE-1961, |
| LUCENE-1968, LUCENE-1970, LUCENE-1946, LUCENE-1971, LUCENE-1975, |
| LUCENE-1972, LUCENE-1978, LUCENE-944, LUCENE-1979, LUCENE-1973, LUCENE-2011: |
| Remove deprecated methods/constructors/classes: |
| |
| - Remove all String/File directory paths in IndexReader / |
| IndexSearcher / IndexWriter. |
| - Remove FSDirectory.getDirectory() |
| - Make FSDirectory abstract. |
| - Remove Field.Store.COMPRESS (see above). |
| - Remove Filter.bits(IndexReader) method and make |
| Filter.getDocIdSet(IndexReader) abstract. |
| - Remove old DocIdSetIterator methods and make the new ones abstract. |
| - Remove some methods in PriorityQueue. |
| - Remove old TokenStream API and backwards compatibility layer. |
| - Remove RangeQuery, RangeFilter and ConstantScoreRangeQuery. |
| - Remove SpanQuery.getTerms(). |
| - Remove ExtendedFieldCache, custom and auto caches, SortField.AUTO. |
| - Remove old-style custom sort. |
| - Remove legacy search setting in SortField. |
| - Remove Hits and all references from core and contrib. |
| - Remove HitCollector and its TopDocs support implementations. |
| - Remove term field and accessors in MultiTermQuery |
| (and fix Highlighter). |
| - Remove deprecated methods in BooleanQuery. |
| - Remove deprecated methods in Similarity. |
| - Remove BoostingTermQuery. |
| - Remove MultiValueSource. |
| - Remove Scorer.explain(int). |
| ...and some other minor ones (Uwe Schindler, Michael Busch, Mark Miller) |
| |
| * LUCENE-1925: Make IndexSearcher's subReaders and docStarts members |
| protected; add expert ctor to directly specify reader, subReaders |
| and docStarts. (John Wang, Tim Smith via Mike McCandless) |
| |
| * LUCENE-1945: All public classes that have a close() method now |
| also implement java.io.Closeable (IndexReader, IndexWriter, Directory,...). |
| (Uwe Schindler) |
| |
| * LUCENE-1998: Change all Parameter instances to Java 5 enums. This |
| is no backwards-break, only a change of the super class. Parameter |
| was deprecated and will be removed in a later version. |
| (DM Smith, Uwe Schindler) |
| |
| Bug fixes |
| |
| * LUCENE-1951: When the text provided to WildcardQuery has no wildcard |
| characters (ie matches a single term), don't lose the boost and |
| rewrite method settings. Also, rewrite to PrefixQuery if the |
| wildcard is form "foo*", for slightly faster performance. (Robert |
| Muir via Mike McCandless) |
| |
| * LUCENE-2013: SpanRegexQuery does not work with QueryScorer. |
| (Benjamin Keil via Mark Miller) |
| |
| * LUCENE-2088: addAttribute() should only accept interfaces that |
| extend Attribute. (Shai Erera, Uwe Schindler) |
| |
| * LUCENE-2045: Fix silly FileNotFoundException hit if you enable |
| infoStream on IndexWriter and then add an empty document and commit |
| (Shai Erera via Mike McCandless) |
| |
| * LUCENE-2046: IndexReader should not see the index as changed, after |
| IndexWriter.prepareCommit has been called but before |
| IndexWriter.commit is called. (Peter Keegan via Mike McCandless) |
| |
| New features |
| |
| * LUCENE-1933: Provide a convenience AttributeFactory that creates a |
| Token instance for all basic attributes. (Uwe Schindler) |
| |
| * LUCENE-2041: Parallelize the rest of ParallelMultiSearcher. Lots of |
| code refactoring and Java 5 concurrent support in MultiSearcher. |
| (Joey Surls, Simon Willnauer via Uwe Schindler) |
| |
| * LUCENE-2051: Add CharArraySet.copy() as a simple method to copy |
| any Set<?> to a CharArraySet that is optimized, if Set<?> is already |
| an CharArraySet. (Simon Willnauer) |
| |
| Optimizations |
| |
| * LUCENE-1183: Optimize Levenshtein Distance computation in |
| FuzzyQuery. (CĂ©drik Lime via Mike McCandless) |
| |
| * LUCENE-2006: Optimization of FieldDocSortedHitQueue to always |
| use Comparable<?> interface. (Uwe Schindler, Mark Miller) |
| |
| * LUCENE-2087: Remove recursion in NumericRangeTermEnum. |
| (Uwe Schindler) |
| |
| Build |
| |
| * LUCENE-486: Remove test->demo dependencies. (Michael Busch) |
| |
| * LUCENE-2024: Raise build requirements to Java 1.5 and ANT 1.7.0 |
| (Uwe Schindler, Mike McCandless) |
| |
| ======================= Release 2.9.1 ======================= |
| |
| Changes in backwards compatibility policy |
| |
| * LUCENE-2002: Add required Version matchVersion argument when |
| constructing QueryParser or MultiFieldQueryParser and, default (as |
| of 2.9) enablePositionIncrements to true to match |
| StandardAnalyzer's 2.9 default (Uwe Schindler, Mike McCandless) |
| |
| Bug fixes |
| |
| * LUCENE-1974: Fixed nasty bug in BooleanQuery (when it used |
| BooleanScorer for scoring), whereby some matching documents fail to |
| be collected. (Fulin Tang via Mike McCandless) |
| |
| * LUCENE-1124: Make sure FuzzyQuery always matches the precise term. |
| (stefatwork@gmail.com via Mike McCandless) |
| |
| * LUCENE-1976: Fix IndexReader.isCurrent() to return the right thing |
| when the reader is a near real-time reader. (Jake Mannix via Mike |
| McCandless) |
| |
| * LUCENE-1986: Fix NPE when scoring PayloadNearQuery (Peter Keegan, |
| Mark Miller via Mike McCandless) |
| |
| * LUCENE-1992: Fix thread hazard if a merge is committing just as an |
| exception occurs during sync (Uwe Schindler, Mike McCandless) |
| |
| * LUCENE-1995: Note in javadocs that IndexWriter.setRAMBufferSizeMB |
| cannot exceed 2048 MB, and throw IllegalArgumentException if it |
| does. (Aaron McKee, Yonik Seeley, Mike McCandless) |
| |
| * LUCENE-2004: Fix Constants.LUCENE_MAIN_VERSION to not be inlined |
| by client code. (Uwe Schindler) |
| |
| * LUCENE-2016: Replace illegal U+FFFF character with the replacement |
| char (U+FFFD) during indexing, to prevent silent index corruption. |
| (Peter Keegan, Mike McCandless) |
| |
| API Changes |
| |
| * Un-deprecate search(Weight weight, Filter filter, int n) from |
| Searchable interface (deprecated by accident). (Uwe Schindler) |
| |
| * Un-deprecate o.a.l.util.Version constants. (Mike McCandless) |
| |
| * LUCENE-1987: Un-deprecate some ctors of Token, as they will not |
| be removed in 3.0 and are still useful. Also add some missing |
| o.a.l.util.Version constants for enabling invalid acronym |
| settings in StandardAnalyzer to be compatible with the coming |
| Lucene 3.0. (Uwe Schindler) |
| |
| * LUCENE-1973: Un-deprecate IndexSearcher.setDefaultFieldSortScoring, |
| to allow controlling per-IndexSearcher whether scores are computed |
| when sorting by field. (Uwe Schindler, Mike McCandless) |
| |
| * LUCENE-2043: Make IndexReader.commit(Map<String,String>) public. |
| (Mike McCandless) |
| |
| Documentation |
| |
| * LUCENE-1955: Fix Hits deprecation notice to point users in right |
| direction. (Mike McCandless, Mark Miller) |
| |
| * Fix javadoc about score tracking done by search methods in Searcher |
| and IndexSearcher. (Mike McCandless) |
| |
| * LUCENE-2008: Javadoc improvements for TokenStream/Tokenizer/Token |
| (Luke Nezda via Mike McCandless) |
| |
| ======================= Release 2.9.0 ======================= |
| |
| Changes in backwards compatibility policy |
| |
| * LUCENE-1575: Searchable.search(Weight, Filter, int, Sort) no |
| longer computes a document score for each hit by default. If |
| document score tracking is still needed, you can call |
| IndexSearcher.setDefaultFieldSortScoring(true, true) to enable |
| both per-hit and maxScore tracking; however, this is deprecated |
| and will be removed in 3.0. |
| |
| Alternatively, use Searchable.search(Weight, Filter, Collector) |
| and pass in a TopFieldCollector instance, using the following code |
| sample: |
| |
| <code> |
| TopFieldCollector tfc = TopFieldCollector.create(sort, numHits, fillFields, |
| true /* trackDocScores */, |
| true /* trackMaxScore */, |
| false /* docsInOrder */); |
| searcher.search(query, tfc); |
| TopDocs results = tfc.topDocs(); |
| </code> |
| |
| Note that your Sort object cannot use SortField.AUTO when you |
| directly instantiate TopFieldCollector. |
| |
| Also, the method search(Weight, Filter, Collector) was added to |
| the Searchable interface and the Searcher abstract class to |
| replace the deprecated HitCollector versions. If you either |
| implement Searchable or extend Searcher, you should change your |
| code to implement this method. If you already extend |
| IndexSearcher, no further changes are needed to use Collector. |
| |
| Finally, the values Float.NaN and Float.NEGATIVE_INFINITY are not |
| valid scores. Lucene uses these values internally in certain |
| places, so if you have hits with such scores, it will cause |
| problems. (Shai Erera via Mike McCandless) |
| |
| * LUCENE-1687: All methods and parsers from the interface ExtendedFieldCache |
| have been moved into FieldCache. ExtendedFieldCache is now deprecated and |
| contains only a few declarations for binary backwards compatibility. |
| ExtendedFieldCache will be removed in version 3.0. Users of FieldCache and |
| ExtendedFieldCache will be able to plug in Lucene 2.9 without recompilation. |
| The auto cache (FieldCache.getAuto) is now deprecated. Due to the merge of |
| ExtendedFieldCache and FieldCache, FieldCache can now additionally return |
| long[] and double[] arrays in addition to int[] and float[] and StringIndex. |
| |
| The interface changes are only notable for users implementing the interfaces, |
| which was unlikely done, because there is no possibility to change |
| Lucene's FieldCache implementation. (Grant Ingersoll, Uwe Schindler) |
| |
| * LUCENE-1630, LUCENE-1771: Weight, previously an interface, is now an abstract |
| class. Some of the method signatures have changed, but it should be fairly |
| easy to see what adjustments must be made to existing code to sync up |
| with the new API. You can find more detail in the API Changes section. |
| |
| Going forward Searchable will be kept for convenience only and may |
| be changed between minor releases without any deprecation |
| process. It is not recommended that you implement it, but rather extend |
| Searcher. |
| (Shai Erera, Chris Hostetter, Martin Ruckli, Mark Miller via Mike McCandless) |
| |
| * LUCENE-1422, LUCENE-1693: The new Attribute based TokenStream API (see below) |
| has some backwards breaks in rare cases. We did our best to make the |
| transition as easy as possible and you are not likely to run into any problems. |
| If your tokenizers still implement next(Token) or next(), the calls are |
| automatically wrapped. The indexer and query parser use the new API |
| (eg use incrementToken() calls). All core TokenStreams are implemented using |
| the new API. You can mix old and new API style TokenFilters/TokenStream. |
| Problems only occur when you have done the following: |
| You have overridden next(Token) or next() in one of the non-abstract core |
| TokenStreams/-Filters. These classes should normally be final, but some |
| of them are not. In this case, next(Token)/next() would never be called. |
| To fail early with a hard compile/runtime error, the next(Token)/next() |
| methods in these TokenStreams/-Filters were made final in this release. |
| (Michael Busch, Uwe Schindler) |
| |
| * LUCENE-1763: MergePolicy now requires an IndexWriter instance to |
| be passed upon instantiation. As a result, IndexWriter was removed |
| as a method argument from all MergePolicy methods. (Shai Erera via |
| Mike McCandless) |
| |
| * LUCENE-1748: LUCENE-1001 introduced PayloadSpans, but this was a back |
| compat break and caused custom SpanQuery implementations to fail at runtime |
| in a variety of ways. This issue attempts to remedy things by causing |
| a compile time break on custom SpanQuery implementations and removing |
| the PayloadSpans class, with its functionality now moved to Spans. To |
| help in alleviating future back compat pain, Spans has been changed from |
| an interface to an abstract class. |
| (Hugh Cayless, Mark Miller) |
| |
| * LUCENE-1808: Query.createWeight has been changed from protected to |
| public. This will be a back compat break if you have overridden this |
| method - but you are likely already affected by the LUCENE-1693 (make Weight |
| abstract rather than an interface) back compat break if you have overridden |
| Query.creatWeight, so we have taken the opportunity to make this change. |
| (Tim Smith, Shai Erera via Mark Miller) |
| |
| * LUCENE-1708 - IndexReader.document() no longer checks if the document is |
| deleted. You can call IndexReader.isDeleted(n) prior to calling document(n). |
| (Shai Erera via Mike McCandless) |
| |
| |
| Changes in runtime behavior |
| |
| * LUCENE-1424: QueryParser now by default uses constant score auto |
| rewriting when it generates a WildcardQuery and PrefixQuery (it |
| already does so for TermRangeQuery, as well). Call |
| setMultiTermRewriteMethod(MultiTermQuery.SCORING_BOOLEAN_QUERY_REWRITE) |
| to revert to slower BooleanQuery rewriting method. (Mark Miller via Mike |
| McCandless) |
| |
| * LUCENE-1575: As of 2.9, the core collectors as well as |
| IndexSearcher's search methods that return top N results, no |
| longer filter documents with scores <= 0.0. If you rely on this |
| functionality you can use PositiveScoresOnlyCollector like this: |
| |
| <code> |
| TopDocsCollector tdc = new TopScoreDocCollector(10); |
| Collector c = new PositiveScoresOnlyCollector(tdc); |
| searcher.search(query, c); |
| TopDocs hits = tdc.topDocs(); |
| ... |
| </code> |
| |
| * LUCENE-1604: IndexReader.norms(String field) is now allowed to |
| return null if the field has no norms, as long as you've |
| previously called IndexReader.setDisableFakeNorms(true). This |
| setting now defaults to false (to preserve the fake norms back |
| compatible behavior) but in 3.0 will be hardwired to true. (Shon |
| Vella via Mike McCandless). |
| |
| * LUCENE-1624: If you open IndexWriter with create=true and |
| autoCommit=false on an existing index, IndexWriter no longer |
| writes an empty commit when it's created. (Paul Taylor via Mike |
| McCandless) |
| |
| * LUCENE-1593: When you call Sort() or Sort.setSort(String field, |
| boolean reverse), the resulting SortField array no longer ends |
| with SortField.FIELD_DOC (it was unnecessary as Lucene breaks ties |
| internally by docID). (Shai Erera via Michael McCandless) |
| |
| * LUCENE-1542: When the first token(s) have 0 position increment, |
| IndexWriter used to incorrectly record the position as -1, if no |
| payload is present, or Integer.MAX_VALUE if a payload is present. |
| This causes positional queries to fail to match. The bug is now |
| fixed, but if your app relies on the buggy behavior then you must |
| call IndexWriter.setAllowMinus1Position(). That API is deprecated |
| so you must fix your application, and rebuild your index, to not |
| rely on this behavior by the 3.0 release of Lucene. (Jonathan |
| Mamou, Mark Miller via Mike McCandless) |
| |
| |
| * LUCENE-1715: Finalizers have been removed from the 4 core classes |
| that still had them, since they will cause GC to take longer, thus |
| tying up memory for longer, and at best they mask buggy app code. |
| DirectoryReader (returned from IndexReader.open) & IndexWriter |
| previously released the write lock during finalize. |
| SimpleFSDirectory.FSIndexInput closed the descriptor in its |
| finalizer, and NativeFSLock released the lock. It's possible |
| applications will be affected by this, but only if the application |
| is failing to close reader/writers. (Brian Groose via Mike |
| McCandless) |
| |
| * LUCENE-1717: Fixed IndexWriter to account for RAM usage of |
| buffered deletions. (Mike McCandless) |
| |
| * LUCENE-1727: Ensure that fields are stored & retrieved in the |
| exact order in which they were added to the document. This was |
| true in all Lucene releases before 2.3, but was broken in 2.3 and |
| 2.4, and is now fixed in 2.9. (Mike McCandless) |
| |
| * LUCENE-1678: The addition of Analyzer.reusableTokenStream |
| accidentally broke back compatibility of external analyzers that |
| subclassed core analyzers that implemented tokenStream but not |
| reusableTokenStream. This is now fixed, such that if |
| reusableTokenStream is invoked on such a subclass, that method |
| will forcefully fallback to tokenStream. (Mike McCandless) |
| |
| * LUCENE-1801: Token.clear() and Token.clearNoTermBuffer() now also clear |
| startOffset, endOffset and type. This is not likely to affect any |
| Tokenizer chains, as Tokenizers normally always set these three values. |
| This change was made to be conform to the new AttributeImpl.clear() and |
| AttributeSource.clearAttributes() to work identical for Token as one for all |
| AttributeImpl and the 6 separate AttributeImpls. (Uwe Schindler, Michael Busch) |
| |
| * LUCENE-1483: When searching over multiple segments, a new Scorer is now created |
| for each segment. Searching has been telescoped out a level and IndexSearcher now |
| operates much like MultiSearcher does. The Weight is created only once for the top |
| level Searcher, but each Scorer is passed a per-segment IndexReader. This will |
| result in doc ids in the Scorer being internal to the per-segment IndexReader. It |
| has always been outside of the API to count on a given IndexReader to contain every |
| doc id in the index - and if you have been ignoring MultiSearcher in your custom code |
| and counting on this fact, you will find your code no longer works correctly. If a |
| custom Scorer implementation uses any caches/filters that rely on being based on the |
| top level IndexReader, it will need to be updated to correctly use contextless |
| caches/filters eg you can't count on the IndexReader to contain any given doc id or |
| all of the doc ids. (Mark Miller, Mike McCandless) |
| |
| * LUCENE-1846: DateTools now uses the US locale to format the numbers in its |
| date/time strings instead of the default locale. For most locales there will |
| be no change in the index format, as DateFormatSymbols is using ASCII digits. |
| The usage of the US locale is important to guarantee correct ordering of |
| generated terms. (Uwe Schindler) |
| |
| * LUCENE-1860: MultiTermQuery now defaults to |
| CONSTANT_SCORE_AUTO_REWRITE_DEFAULT rewrite method (previously it |
| was SCORING_BOOLEAN_QUERY_REWRITE). This means that PrefixQuery |
| and WildcardQuery will now produce constant score for all matching |
| docs, equal to the boost of the query. (Mike McCandless) |
| |
| API Changes |
| |
| * LUCENE-1419: Add expert API to set custom indexing chain. This API is |
| package-protected for now, so we don't have to officially support it. |
| Yet, it will give us the possibility to try out different consumers |
| in the chain. (Michael Busch) |
| |
| * LUCENE-1427: DocIdSet.iterator() is now allowed to throw |
| IOException. (Paul Elschot, Mike McCandless) |
| |
| * LUCENE-1422, LUCENE-1693: New TokenStream API that uses a new class called |
| AttributeSource instead of the Token class, which is now a utility class that |
| holds common Token attributes. All attributes that the Token class had have |
| been moved into separate classes: TermAttribute, OffsetAttribute, |
| PositionIncrementAttribute, PayloadAttribute, TypeAttribute and FlagsAttribute. |
| The new API is much more flexible; it allows to combine the Attributes |
| arbitrarily and also to define custom Attributes. The new API has the same |
| performance as the old next(Token) approach. For conformance with this new |
| API Tee-/SinkTokenizer was deprecated and replaced by a new TeeSinkTokenFilter. |
| (Michael Busch, Uwe Schindler; additional contributions and bug fixes by |
| Daniel Shane, Doron Cohen) |
| |
| * LUCENE-1467: Add nextDoc() and next(int) methods to OpenBitSetIterator. |
| These methods can be used to avoid additional calls to doc(). |
| (Michael Busch) |
| |
| * LUCENE-1468: Deprecate Directory.list(), which sometimes (in |
| FSDirectory) filters out files that don't look like index files, in |
| favor of new Directory.listAll(), which does no filtering. Also, |
| listAll() will never return null; instead, it throws an IOException |
| (or subclass). Specifically, FSDirectory.listAll() will throw the |
| newly added NoSuchDirectoryException if the directory does not |
| exist. (Marcel Reutegger, Mike McCandless) |
| |
| * LUCENE-1546: Add IndexReader.flush(Map commitUserData), allowing |
| you to record an opaque commitUserData (maps String -> String) into |
| the commit written by IndexReader. This matches IndexWriter's |
| commit methods. (Jason Rutherglen via Mike McCandless) |
| |
| * LUCENE-652: Added org.apache.lucene.document.CompressionTools, to |
| enable compressing & decompressing binary content, external to |
| Lucene's indexing. Deprecated Field.Store.COMPRESS. |
| |
| * LUCENE-1561: Renamed Field.omitTf to Field.omitTermFreqAndPositions |
| (Otis Gospodnetic via Mike McCandless) |
| |
| * LUCENE-1500: Added new InvalidTokenOffsetsException to Highlighter methods |
| to denote issues when offsets in TokenStream tokens exceed the length of the |
| provided text. (Mark Harwood) |
| |
| * LUCENE-1575, LUCENE-1483: HitCollector is now deprecated in favor of |
| a new Collector abstract class. For easy migration, people can use |
| HitCollectorWrapper which translates (wraps) HitCollector into |
| Collector. Note that this class is also deprecated and will be |
| removed when HitCollector is removed. Also TimeLimitedCollector |
| is deprecated in favor of the new TimeLimitingCollector which |
| extends Collector. (Shai Erera, Mark Miller, Mike McCandless) |
| |
| * LUCENE-1592: The method TermsEnum.skipTo() was deprecated, because |
| it is used nowhere in core/contrib and there is only a very ineffective |
| default implementation available. If you want to position a TermEnum |
| to another Term, create a new one using IndexReader.terms(Term). |
| (Uwe Schindler) |
| |
| * LUCENE-1621: MultiTermQuery.getTerm() has been deprecated as it does |
| not make sense for all subclasses of MultiTermQuery. Check individual |
| subclasses to see if they support getTerm(). (Mark Miller) |
| |
| * LUCENE-1636: Make TokenFilter.input final so it's set only |
| once. (Wouter Heijke, Uwe Schindler via Mike McCandless). |
| |
| * LUCENE-1658, LUCENE-1451: Renamed FSDirectory to SimpleFSDirectory |
| (but left an FSDirectory base class). Added an FSDirectory.open |
| static method to pick a good default FSDirectory implementation |
| given the OS. FSDirectories should now be instantiated using |
| FSDirectory.open or with public constructors rather than |
| FSDirectory.getDirectory(), which has been deprecated. |
| (Michael McCandless, Uwe Schindler, yonik) |
| |
| * LUCENE-1665: Deprecate SortField.AUTO, to be removed in 3.0. |
| Instead, when sorting by field, the application should explicitly |
| state the type of the field. (Mike McCandless) |
| |
| * LUCENE-1660: StopFilter, StandardAnalyzer, StopAnalyzer now |
| require up front specification of enablePositionIncrement (Mike |
| McCandless) |
| |
| * LUCENE-1614: DocIdSetIterator's next() and skipTo() were deprecated in favor |
| of the new nextDoc() and advance(). The new methods return the doc Id they |
| landed on, saving an extra call to doc() in most cases. |
| For easy migration of the code, you can change the calls to next() to |
| nextDoc() != DocIdSetIterator.NO_MORE_DOCS and similarly for skipTo(). |
| However it is advised that you take advantage of the returned doc ID and not |
| call doc() following those two. |
| Also, doc() was deprecated in favor of docID(). docID() should return -1 or |
| NO_MORE_DOCS if nextDoc/advance were not called yet, or NO_MORE_DOCS if the |
| iterator has exhausted. Otherwise it should return the current doc ID. |
| (Shai Erera via Mike McCandless) |
| |
| * LUCENE-1672: All ctors/opens and other methods using String/File to |
| specify the directory in IndexReader, IndexWriter, and IndexSearcher |
| were deprecated. You should instantiate the Directory manually before |
| and pass it to these classes (LUCENE-1451, LUCENE-1658). |
| (Uwe Schindler) |
| |
| * LUCENE-1407: Move RemoteSearchable, RemoteCachingWrapperFilter out |
| of Lucene's core into new contrib/remote package. Searchable no |
| longer extends java.rmi.Remote (Simon Willnauer via Mike |
| McCandless) |
| |
| * LUCENE-1677: The global property |
| org.apache.lucene.SegmentReader.class, and |
| ReadOnlySegmentReader.class are now deprecated, to be removed in |
| 3.0. src/gcj/* has been removed. (Earwin Burrfoot via Mike |
| McCandless) |
| |
| * LUCENE-1673: Deprecated NumberTools in favour of the new |
| NumericRangeQuery and its new indexing format for numeric or |
| date values. (Uwe Schindler) |
| |
| * LUCENE-1630, LUCENE-1771: Weight is now an abstract class, and adds |
| a scorer(IndexReader, boolean /* scoreDocsInOrder */, boolean /* |
| topScorer */) method instead of scorer(IndexReader). IndexSearcher uses |
| this method to obtain a scorer matching the capabilities of the Collector |
| wrt orderedness of docIDs. Some Scorers (like BooleanScorer) are much more |
| efficient if out-of-order documents scoring is allowed by a Collector. |
| Collector must now implement acceptsDocsOutOfOrder. If you write a |
| Collector which does not care about doc ID orderness, it is recommended |
| that you return true. Weight has a scoresDocsOutOfOrder method, which by |
| default returns false. If you create a Weight which will score documents |
| out of order if requested, you should override that method to return true. |
| BooleanQuery's setAllowDocsOutOfOrder and getAllowDocsOutOfOrder have been |
| deprecated as they are not needed anymore. BooleanQuery will now score docs |
| out of order when used with a Collector that can accept docs out of order. |
| Finally, Weight#explain now takes a sub-reader and sub-docID, rather than |
| a top level reader and docID. |
| (Shai Erera, Chris Hostetter, Martin Ruckli, Mark Miller via Mike McCandless) |
| |
| * LUCENE-1466, LUCENE-1906: Added CharFilter and MappingCharFilter, which allows |
| chaining & mapping of characters before tokenizers run. CharStream (subclass of |
| Reader) is the base class for custom java.io.Reader's, that support offset |
| correction. Tokenizers got an additional method correctOffset() that is passed |
| down to the underlying CharStream if input is a subclass of CharStream/-Filter. |
| (Koji Sekiguchi via Mike McCandless, Uwe Schindler) |
| |
| * LUCENE-1703: Add IndexWriter.waitForMerges. (Tim Smith via Mike |
| McCandless) |
| |
| * LUCENE-1625: CheckIndex's programmatic API now returns separate |
| classes detailing the status of each component in the index, and |
| includes more detailed status than previously. (Tim Smith via |
| Mike McCandless) |
| |
| * LUCENE-1713: Deprecated RangeQuery and RangeFilter and renamed to |
| TermRangeQuery and TermRangeFilter. TermRangeQuery is in constant |
| score auto rewrite mode by default. The new classes also have new |
| ctors taking field and term ranges as Strings (see also |
| LUCENE-1424). (Uwe Schindler) |
| |
| * LUCENE-1609: The termInfosIndexDivisor must now be specified |
| up-front when opening the IndexReader. Attempts to call |
| IndexReader.setTermInfosIndexDivisor will hit an |
| UnsupportedOperationException. This was done to enable removal of |
| all synchronization in TermInfosReader, which previously could |
| cause threads to pile up in certain cases. (Dan Rosher via Mike |
| McCandless) |
| |
| * LUCENE-1688: Deprecate static final String stop word array in and |
| StopAnalzyer and replace it with an immutable implementation of |
| CharArraySet. (Simon Willnauer via Mark Miller) |
| |
| * LUCENE-1742: SegmentInfos, SegmentInfo and SegmentReader have been |
| made public as expert, experimental APIs. These APIs may suddenly |
| change from release to release (Jason Rutherglen via Mike |
| McCandless). |
| |
| * LUCENE-1754: QueryWeight.scorer() can return null if no documents |
| are going to be matched by the query. Similarly, |
| Filter.getDocIdSet() can return null if no documents are going to |
| be accepted by the Filter. Note that these 'can' return null, |
| however they don't have to and can return a Scorer/DocIdSet which |
| does not match / reject all documents. This is already the |
| behavior of some QueryWeight/Filter implementations, and is |
| documented here just for emphasis. (Shai Erera via Mike |
| McCandless) |
| |
| * LUCENE-1705: Added IndexWriter.deleteAllDocuments. (Tim Smith via |
| Mike McCandless) |
| |
| * LUCENE-1460: Changed TokenStreams/TokenFilters in contrib to |
| use the new TokenStream API. (Robert Muir, Michael Busch) |
| |
| * LUCENE-1748: LUCENE-1001 introduced PayloadSpans, but this was a back |
| compat break and caused custom SpanQuery implementations to fail at runtime |
| in a variety of ways. This issue attempts to remedy things by causing |
| a compile time break on custom SpanQuery implementations and removing |
| the PayloadSpans class, with its functionality now moved to Spans. To |
| help in alleviating future back compat pain, Spans has been changed from |
| an interface to an abstract class. |
| (Hugh Cayless, Mark Miller) |
| |
| * LUCENE-1808: Query.createWeight has been changed from protected to |
| public. (Tim Smith, Shai Erera via Mark Miller) |
| |
| * LUCENE-1826: Add constructors that take AttributeSource and |
| AttributeFactory to all Tokenizer implementations. |
| (Michael Busch) |
| |
| * LUCENE-1847: Similarity#idf for both a Term and Term Collection have |
| been deprecated. New versions that return an IDFExplanation have been |
| added. (Yasoja Seneviratne, Mike McCandless, Mark Miller) |
| |
| * LUCENE-1877: Made NativeFSLockFactory the default for |
| the new FSDirectory API (open(), FSDirectory subclass ctors). |
| All FSDirectory system properties were deprecated and all lock |
| implementations use no lock prefix if the locks are stored inside |
| the index directory. Because the deprecated String/File ctors of |
| IndexWriter and IndexReader (LUCENE-1672) and FSDirectory.getDirectory() |
| still use the old SimpleFSLockFactory and the new API |
| NativeFSLockFactory, we strongly recommend not to mix deprecated |
| and new API. (Uwe Schindler, Mike McCandless) |
| |
| * LUCENE-1911: Added a new method isCacheable() to DocIdSet. This method |
| should return true, if the underlying implementation does not use disk |
| I/O and is fast enough to be directly cached by CachingWrapperFilter. |
| OpenBitSet, SortedVIntList, and DocIdBitSet are such candidates. |
| The default implementation of the abstract DocIdSet class returns false. |
| In this case, CachingWrapperFilter copies the DocIdSetIterator into an |
| OpenBitSet for caching. (Uwe Schindler, Thomas Becker) |
| |
| Bug fixes |
| |
| * LUCENE-1415: MultiPhraseQuery has incorrect hashCode() and equals() |
| implementation - Leads to Solr Cache misses. |
| (Todd Feak, Mark Miller via yonik) |
| |
| * LUCENE-1327: Fix TermSpans#skipTo() to behave as specified in javadocs |
| of Terms#skipTo(). (Michael Busch) |
| |
| * LUCENE-1573: Do not ignore InterruptedException (caused by |
| Thread.interrupt()) nor enter deadlock/spin loop. Now, an interrupt |
| will cause a RuntimeException to be thrown. In 3.0 we will change |
| public APIs to throw InterruptedException. (Jeremy Volkman via |
| Mike McCandless) |
| |
| * LUCENE-1590: Fixed stored-only Field instances do not change the |
| value of omitNorms, omitTermFreqAndPositions in FieldInfo; when you |
| retrieve such fields they will now have omitNorms=true and |
| omitTermFreqAndPositions=false (though these values are unused). |
| (Uwe Schindler via Mike McCandless) |
| |
| * LUCENE-1587: RangeQuery#equals() could consider a RangeQuery |
| without a collator equal to one with a collator. |
| (Mark Platvoet via Mark Miller) |
| |
| * LUCENE-1600: Don't call String.intern unnecessarily in some cases |
| when loading documents from the index. (P Eger via Mike |
| McCandless) |
| |
| * LUCENE-1611: Fix case where OutOfMemoryException in IndexWriter |
| could cause "infinite merging" to happen. (Christiaan Fluit via |
| Mike McCandless) |
| |
| * LUCENE-1623: Properly handle back-compatibility of 2.3.x indexes that |
| contain field names with non-ascii characters. (Mike Streeton via |
| Mike McCandless) |
| |
| * LUCENE-1593: MultiSearcher and ParallelMultiSearcher did not break ties (in |
| sort) by doc Id in a consistent manner (i.e., if Sort.FIELD_DOC was used vs. |
| when it wasn't). (Shai Erera via Michael McCandless) |
| |
| * LUCENE-1647: Fix case where IndexReader.undeleteAll would cause |
| the segment's deletion count to be incorrect. (Mike McCandless) |
| |
| * LUCENE-1542: When the first token(s) have 0 position increment, |
| IndexWriter used to incorrectly record the position as -1, if no |
| payload is present, or Integer.MAX_VALUE if a payload is present. |
| This causes positional queries to fail to match. The bug is now |
| fixed, but if your app relies on the buggy behavior then you must |
| call IndexWriter.setAllowMinus1Position(). That API is deprecated |
| so you must fix your application, and rebuild your index, to not |
| rely on this behavior by the 3.0 release of Lucene. (Jonathan |
| Mamou, Mark Miller via Mike McCandless) |
| |
| * LUCENE-1658: Fixed MMapDirectory to correctly throw IOExceptions |
| on EOF, removed numeric overflow possibilities and added support |
| for a hack to unmap the buffers on closing IndexInput. |
| (Uwe Schindler) |
| |
| * LUCENE-1681: Fix infinite loop caused by a call to DocValues methods |
| getMinValue, getMaxValue, getAverageValue. (Simon Willnauer via Mark Miller) |
| |
| * LUCENE-1599: Add clone support for SpanQuerys. SpanRegexQuery counts |
| on this functionality and does not work correctly without it. |
| (Billow Gao, Mark Miller) |
| |
| * LUCENE-1718: Fix termInfosIndexDivisor to carry over to reopened |
| readers (Mike McCandless) |
| |
| * LUCENE-1583: SpanOrQuery skipTo() doesn't always move forwards as Spans |
| documentation indicates it should. (Moti Nisenson via Mark Miller) |
| |
| * LUCENE-1566: Sun JVM Bug |
| http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6478546 causes |
| invalid OutOfMemoryError when reading too many bytes at once from |
| a file on 32bit JVMs that have a large maximum heap size. This |
| fix adds set/getReadChunkSize to FSDirectory so that large reads |
| are broken into chunks, to work around this JVM bug. On 32bit |
| JVMs the default chunk size is 100 MB; on 64bit JVMs, which don't |
| show the bug, the default is Integer.MAX_VALUE. (Simon Willnauer |
| via Mike McCandless) |
| |
| * LUCENE-1448: Added TokenStream.end() to perform end-of-stream |
| operations (ie to return the end offset of the tokenization). |
| This is important when multiple fields with the same name are added |
| to a document, to ensure offsets recorded in term vectors for all |
| of the instances are correct. |
| (Mike McCandless, Mark Miller, Michael Busch) |
| |
| * LUCENE-1805: CloseableThreadLocal did not allow a null Object in get(), |
| although it does allow it in set(Object). Fix get() to not assert the object |
| is not null. (Shai Erera via Mike McCandless) |
| |
| * LUCENE-1801: Changed all Tokenizers or TokenStreams in core/contrib) |
| that are the source of Tokens to always call |
| AttributeSource.clearAttributes() first. (Uwe Schindler) |
| |
| * LUCENE-1819: MatchAllDocsQuery.toString(field) should produce output |
| that is parsable by the QueryParser. (John Wang, Mark Miller) |
| |
| * LUCENE-1836: Fix localization bug in the new query parser and add |
| new LocalizedTestCase as base class for localization junit tests. |
| (Robert Muir, Uwe Schindler via Michael Busch) |
| |
| * LUCENE-1847: PhraseQuery/TermQuery/SpanQuery use IndexReader specific stats |
| in their Weight#explain methods - these stats should be corpus wide. |
| (Yasoja Seneviratne, Mike McCandless, Mark Miller) |
| |
| * LUCENE-1885: Fix the bug that NativeFSLock.isLocked() did not work, |
| if the lock was obtained by another NativeFSLock(Factory) instance. |
| Because of this IndexReader.isLocked() and IndexWriter.isLocked() did |
| not work correctly. (Uwe Schindler) |
| |
| * LUCENE-1899: Fix O(N^2) CPU cost when setting docIDs in order in an |
| OpenBitSet, due to an inefficiency in how the underlying storage is |
| reallocated. (Nadav Har'El via Mike McCandless) |
| |
| * LUCENE-1918: Fixed cases where a ParallelReader would |
| generate exceptions on being passed to |
| IndexWriter.addIndexes(IndexReader[]). First case was when the |
| ParallelReader was empty. Second case was when the ParallelReader |
| used to contain documents with TermVectors, but all such documents |
| have been deleted. (Christian KohlschĂĽtter via Mike McCandless) |
| |
| New features |
| |
| * LUCENE-1411: Added expert API to open an IndexWriter on a prior |
| commit, obtained from IndexReader.listCommits. This makes it |
| possible to rollback changes to an index even after you've closed |
| the IndexWriter that made the changes, assuming you are using an |
| IndexDeletionPolicy that keeps past commits around. This is useful |
| when building transactional support on top of Lucene. (Mike |
| McCandless) |
| |
| * LUCENE-1382: Add an optional arbitrary Map (String -> String) |
| "commitUserData" to IndexWriter.commit(), which is stored in the |
| segments file and is then retrievable via |
| IndexReader.getCommitUserData instance and static methods. |
| (Shalin Shekhar Mangar via Mike McCandless) |
| |
| * LUCENE-1420: Similarity now has a computeNorm method that allows |
| custom Similarity classes to override how norm is computed. It's |
| provided a FieldInvertState instance that contains details from |
| inverting the field. The default impl is boost * |
| lengthNorm(numTerms), to be backwards compatible. Also added |
| {set/get}DiscountOverlaps to DefaultSimilarity, to control whether |
| overlapping tokens (tokens with 0 position increment) should be |
| counted in lengthNorm. (Andrzej Bialecki via Mike McCandless) |
| |
| * LUCENE-1424: Moved constant score query rewrite capability into |
| MultiTermQuery, allowing TermRangeQuery, PrefixQuery and WildcardQuery |
| to switch between constant-score rewriting or BooleanQuery |
| expansion rewriting via a new setRewriteMethod method. |
| Deprecated ConstantScoreRangeQuery (Mark Miller via Mike |
| McCandless) |
| |
| * LUCENE-1461: Added FieldCacheRangeFilter, a RangeFilter for |
| single-term fields that uses FieldCache to compute the filter. If |
| your documents all have a single term for a given field, and you |
| need to create many RangeFilters with varying lower/upper bounds, |
| then this is likely a much faster way to create the filters than |
| RangeFilter. FieldCacheRangeFilter allows ranges on all data types, |
| FieldCache supports (term ranges, byte, short, int, long, float, double). |
| However, it comes at the expense of added RAM consumption and slower |
| first-time usage due to populating the FieldCache. It also does not |
| support collation (Tim Sturge, Matt Ericson via Mike McCandless and |
| Uwe Schindler) |
| |
| * LUCENE-1296: add protected method CachingWrapperFilter.docIdSetToCache |
| to allow subclasses to choose which DocIdSet implementation to use |
| (Paul Elschot via Mike McCandless) |
| |
| * LUCENE-1390: Added ASCIIFoldingFilter, a Filter that converts |
| alphabetic, numeric, and symbolic Unicode characters which are not in |
| the first 127 ASCII characters (the "Basic Latin" Unicode block) into |
| their ASCII equivalents, if one exists. ISOLatin1AccentFilter, which |
| handles a subset of this filter, has been deprecated. |
| (Andi Vajda, Steven Rowe via Mark Miller) |
| |
| * LUCENE-1478: Added new SortField constructor allowing you to |
| specify a custom FieldCache parser to generate numeric values from |
| terms for a field. (Uwe Schindler via Mike McCandless) |
| |
| * LUCENE-1528: Add support for Ideographic Space to the queryparser. |
| (Luis Alves via Michael Busch) |
| |
| * LUCENE-1487: Added FieldCacheTermsFilter, to filter by multiple |
| terms on single-valued fields. The filter loads the FieldCache |
| for the field the first time it's called, and subsequent usage of |
| that field, even with different Terms in the filter, are fast. |
| (Tim Sturge, Shalin Shekhar Mangar via Mike McCandless). |
| |
| * LUCENE-1314: Add clone(), clone(boolean readOnly) and |
| reopen(boolean readOnly) to IndexReader. Cloning an IndexReader |
| gives you a new reader which you can make changes to (deletions, |
| norms) without affecting the original reader. Now, with clone or |
| reopen you can change the readOnly of the original reader. (Jason |
| Rutherglen, Mike McCandless) |
| |
| * LUCENE-1506: Added FilteredDocIdSet, an abstract class which you |
| subclass to implement the "match" method to accept or reject each |
| docID. Unlike ChainedFilter (under contrib/misc), |
| FilteredDocIdSet never requires you to materialize the full |
| bitset. Instead, match() is called on demand per docID. (John |
| Wang via Mike McCandless) |
| |
| * LUCENE-1398: Add ReverseStringFilter to contrib/analyzers, a filter |
| to reverse the characters in each token. (Koji Sekiguchi via yonik) |
| |
| * LUCENE-1551: Add expert IndexReader.reopen(IndexCommit) to allow |
| efficiently opening a new reader on a specific commit, sharing |
| resources with the original reader. (Torin Danil via Mike |
| McCandless) |
| |
| * LUCENE-1434: Added org.apache.lucene.util.IndexableBinaryStringTools, |
| to encode byte[] as String values that are valid terms, and |
| maintain sort order of the original byte[] when the bytes are |
| interpreted as unsigned. (Steven Rowe via Mike McCandless) |
| |
| * LUCENE-1543: Allow MatchAllDocsQuery to optionally use norms from |
| a specific fields to set the score for a document. (Karl Wettin |
| via Mike McCandless) |
| |
| * LUCENE-1586: Add IndexReader.getUniqueTermCount(). (Mike |
| McCandless via Derek) |
| |
| * LUCENE-1516: Added "near real-time search" to IndexWriter, via a |
| new expert getReader() method. This method returns a reader that |
| searches the full index, including any uncommitted changes in the |
| current IndexWriter session. This should result in a faster |
| turnaround than the normal approach of commiting the changes and |
| then reopening a reader. (Jason Rutherglen via Mike McCandless) |
| |
| * LUCENE-1603: Added new MultiTermQueryWrapperFilter, to wrap any |
| MultiTermQuery as a Filter. Also made some improvements to |
| MultiTermQuery: return DocIdSet.EMPTY_DOCIDSET if there are no |
| terms in the enum; track the total number of terms it visited |
| during rewrite (getTotalNumberOfTerms). FilteredTermEnum is also |
| more friendly to subclassing. (Uwe Schindler via Mike McCandless) |
| |
| * LUCENE-1605: Added BitVector.subset(). (Jeremy Volkman via Mike |
| McCandless) |
| |
| * LUCENE-1618: Added FileSwitchDirectory that enables files with |
| specified extensions to be stored in a primary directory and the |
| rest of the files to be stored in the secondary directory. For |
| example, this can be useful for the large doc-store (stored |
| fields, term vectors) files in FSDirectory and the rest of the |
| index files in a RAMDirectory. (Jason Rutherglen via Mike |
| McCandless) |
| |
| * LUCENE-1494: Added FieldMaskingSpanQuery which can be used to |
| cross-correlate Spans from different fields. |
| (Paul Cowan and Chris Hostetter) |
| |
| * LUCENE-1634: Add calibrateSizeByDeletes to LogMergePolicy, to take |
| deletions into account when considering merges. (Yasuhiro Matsuda |
| via Mike McCandless) |
| |
| * LUCENE-1550: Added new n-gram based String distance measure for spell checking. |
| See the Javadocs for NGramDistance.java for a reference paper on why |
| this is helpful (Tom Morton via Grant Ingersoll) |
| |
| * LUCENE-1470, LUCENE-1582, LUCENE-1602, LUCENE-1673, LUCENE-1701, LUCENE-1712: |
| Added NumericRangeQuery and NumericRangeFilter, a fast alternative to |
| RangeQuery/RangeFilter for numeric searches. They depend on a specific |
| structure of terms in the index that can be created by indexing |
| using the new NumericField or NumericTokenStream classes. NumericField |
| can only be used for indexing and optionally stores the values as |
| string representation in the doc store. Documents returned from |
| IndexReader/IndexSearcher will return only the String value using |
| the standard Fieldable interface. NumericFields can be sorted on |
| and loaded into the FieldCache. (Uwe Schindler, Yonik Seeley, |
| Mike McCandless) |
| |
| * LUCENE-1405: Added support for Ant resource collections in contrib/ant |
| <index> task. (Przemyslaw Sztoch via Erik Hatcher) |
| |
| * LUCENE-1699: Allow setting a TokenStream on Field/Fieldable for indexing |
| in conjunction with any other ways to specify stored field values, |
| currently binary or string values. (yonik) |
| |
| * LUCENE-1701: Made the standard FieldCache.Parsers public and added |
| parsers for fields generated using NumericField/NumericTokenStream. |
| All standard parsers now also implement Serializable and enforce |
| their singleton status. (Uwe Schindler, Mike McCandless) |
| |
| * LUCENE-1741: User configurable maximum chunk size in MMapDirectory. |
| On 32 bit platforms, the address space can be very fragmented, so |
| one big ByteBuffer for the whole file may not fit into address space. |
| (Eks Dev via Uwe Schindler) |
| |
| * LUCENE-1644: Enable 4 rewrite modes for queries deriving from |
| MultiTermQuery (WildcardQuery, PrefixQuery, TermRangeQuery, |
| NumericRangeQuery): CONSTANT_SCORE_FILTER_REWRITE first creates a |
| filter and then assigns constant score (boost) to docs; |
| CONSTANT_SCORE_BOOLEAN_QUERY_REWRITE create a BooleanQuery but |
| uses a constant score (boost); SCORING_BOOLEAN_QUERY_REWRITE also |
| creates a BooleanQuery but keeps the BooleanQuery's scores; |
| CONSTANT_SCORE_AUTO_REWRITE tries to pick the most performant |
| constant-score rewrite method. (Mike McCandless) |
| |
| * LUCENE-1448: Added TokenStream.end(), to perform end-of-stream |
| operations. This is currently used to fix offset problems when |
| multiple fields with the same name are added to a document. |
| (Mike McCandless, Mark Miller, Michael Busch) |
| |
| * LUCENE-1776: Add an option to not collect payloads for an ordered |
| SpanNearQuery. Payloads were not lazily loaded in this case as |
| the javadocs implied. If you have payloads and want to use an ordered |
| SpanNearQuery that does not need to use the payloads, you can |
| disable loading them with a new constructor switch. (Mark Miller) |
| |
| * LUCENE-1341: Added PayloadNearQuery to enable SpanNearQuery functionality |
| with payloads (Peter Keegan, Grant Ingersoll, Mark Miller) |
| |
| * LUCENE-1790: Added PayloadTermQuery to enable scoring of payloads |
| based on the maximum payload seen for a document. |
| Slight refactoring of Similarity and other payload queries (Grant Ingersoll, Mark Miller) |
| |
| * LUCENE-1749: Addition of FieldCacheSanityChecker utility, and |
| hooks to use it in all existing Lucene Tests. This class can |
| be used by any application to inspect the FieldCache and provide |
| diagnostic information about the possibility of inconsistent |
| FieldCache usage. Namely: FieldCache entries for the same field |
| with different datatypes or parsers; and FieldCache entries for |
| the same field in both a reader, and one of it's (descendant) sub |
| readers. |
| (Chris Hostetter, Mark Miller) |
| |
| * LUCENE-1789: Added utility class |
| oal.search.function.MultiValueSource to ease the transition to |
| segment based searching for any apps that directly call |
| oal.search.function.* APIs. This class wraps any other |
| ValueSource, but takes care when composite (multi-segment) are |
| passed to not double RAM usage in the FieldCache. (Chris |
| Hostetter, Mark Miller, Mike McCandless) |
| |
| Optimizations |
| |
| * LUCENE-1427: Fixed QueryWrapperFilter to not waste time computing |
| scores of the query, since they are just discarded. Also, made it |
| more efficient (single pass) by not creating & populating an |
| intermediate OpenBitSet (Paul Elschot, Mike McCandless) |
| |
| * LUCENE-1443: Performance improvement for OpenBitSetDISI.inPlaceAnd() |
| (Paul Elschot via yonik) |
| |
| * LUCENE-1484: Remove synchronization of IndexReader.document() by |
| using CloseableThreadLocal internally. (Jason Rutherglen via Mike |
| McCandless). |
| |
| * LUCENE-1124: Short circuit FuzzyQuery.rewrite when input token length |
| is small compared to minSimilarity. (Timo Nentwig, Mark Miller) |
| |
| * LUCENE-1316: MatchAllDocsQuery now avoids the synchronized |
| IndexReader.isDeleted() call per document, by directly accessing |
| the underlying deleteDocs BitVector. This improves performance |
| with non-readOnly readers, especially in a multi-threaded |
| environment. (Todd Feak, Yonik Seeley, Jason Rutherglen via Mike |
| McCandless) |
| |
| * LUCENE-1483: When searching over multiple segments we now visit |
| each sub-reader one at a time. This speeds up warming, since |
| FieldCache entries (if required) can be shared across reopens for |
| those segments that did not change, and also speeds up searches |
| that sort by relevance or by field values. (Mark Miller, Mike |
| McCandless) |
| |
| * LUCENE-1575: The new Collector class decouples collect() from |
| score computation. Collector.setScorer is called to establish the |
| current Scorer in-use per segment. Collectors that require the |
| score should then call Scorer.score() per hit inside |
| collect(). (Shai Erera via Mike McCandless) |
| |
| * LUCENE-1596: MultiTermDocs speedup when set with |
| MultiTermDocs.seek(MultiTermEnum) (yonik) |
| |
| * LUCENE-1653: Avoid creating a Calendar in every call to |
| DateTools#dateToString, DateTools#timeToString and |
| DateTools#round. (Shai Erera via Mark Miller) |
| |
| * LUCENE-1688: Deprecate static final String stop word array and |
| replace it with an immutable implementation of CharArraySet. |
| Removes conversions between Set and array. |
| (Simon Willnauer via Mark Miller) |
| |
| * LUCENE-1754: BooleanQuery.queryWeight.scorer() will return null if |
| it won't match any documents (e.g. if there are no required and |
| optional scorers, or not enough optional scorers to satisfy |
| minShouldMatch). (Shai Erera via Mike McCandless) |
| |
| * LUCENE-1607: To speed up string interning for commonly used |
| strings, the StringHelper.intern() interface was added with a |
| default implementation that uses a lockless cache. |
| (Earwin Burrfoot, yonik) |
| |
| * LUCENE-1800: QueryParser should use reusable TokenStreams. (yonik) |
| |
| |
| Documentation |
| |
| * LUCENE-1908: Scoring documentation imrovements in Similarity javadocs. |
| (Mark Miller, Shai Erera, Ted Dunning, Jiri Kuhn, Marvin Humphrey, Doron Cohen) |
| |
| * LUCENE-1872: NumericField javadoc improvements |
| (Michael McCandless, Uwe Schindler) |
| |
| * LUCENE-1875: Make TokenStream.end javadoc less confusing. |
| (Uwe Schindler) |
| |
| * LUCENE-1862: Rectified duplicate package level javadocs for |
| o.a.l.queryParser and o.a.l.analysis.cn. |
| (Chris Hostetter) |
| |
| * LUCENE-1886: Improved hyperlinking in key Analysis javadocs |
| (Bernd Fondermann via Chris Hostetter) |
| |
| * LUCENE-1884: massive javadoc and comment cleanup, primarily dealing with |
| typos. |
| (Robert Muir via Chris Hostetter) |
| |
| * LUCENE-1898: Switch changes to use bullets rather than numbers and |
| update changes-to-html script to handle the new format. |
| (Steven Rowe, Mark Miller) |
| |
| * LUCENE-1900: Improve Searchable Javadoc. |
| (Nadav Har'El, Doron Cohen, Marvin Humphrey, Mark Miller) |
| |
| * LUCENE-1896: Improve Similarity#queryNorm javadocs. |
| (Jiri Kuhn, Mark Miller) |
| |
| Build |
| |
| * LUCENE-1440: Add new targets to build.xml that allow downloading |
| and executing the junit testcases from an older release for |
| backwards-compatibility testing. (Michael Busch) |
| |
| * LUCENE-1446: Add compatibility tag to common-build.xml and run |
| backwards-compatibility tests in the nightly build. (Michael Busch) |
| |
| * LUCENE-1529: Properly test "drop-in" replacement of jar with |
| backwards-compatibility tests. (Mike McCandless, Michael Busch) |
| |
| * LUCENE-1851: Change 'javacc' and 'clean-javacc' targets to build |
| and clean contrib/surround files. (Luis Alves via Michael Busch) |
| |
| * LUCENE-1854: tar task should use longfile="gnu" to avoid false file |
| name length warnings. (Mark Miller) |
| |
| Test Cases |
| |
| * LUCENE-1791: Enhancements to the QueryUtils and CheckHits utility |
| classes to wrap IndexReaders and Searchers in MultiReaders or |
| MultiSearcher when possible to help exercise more edge cases. |
| (Chris Hostetter, Mark Miller) |
| |
| * LUCENE-1852: Fix localization test failures. |
| (Robert Muir via Michael Busch) |
| |
| * LUCENE-1843: Refactored all tests that use assertAnalyzesTo() & others |
| in core and contrib to use a new BaseTokenStreamTestCase |
| base class. Also rewrote some tests to use this general analysis assert |
| functions instead of own ones (e.g. TestMappingCharFilter). |
| The new base class also tests tokenization with the TokenStream.next() |
| backwards layer enabled (using Token/TokenWrapper as attribute |
| implementation) and disabled (default for Lucene 3.0) |
| (Uwe Schindler, Robert Muir) |
| |
| * LUCENE-1836: Added a new LocalizedTestCase as base class for localization |
| junit tests. (Robert Muir, Uwe Schindler via Michael Busch) |
| |
| ======================= Release 2.4.1 ======================= |
| |
| API Changes |
| |
| 1. LUCENE-1186: Add Analyzer.close() to free internal ThreadLocal |
| resources. (Christian KohlschĂĽtter via Mike McCandless) |
| |
| Bug fixes |
| |
| 1. LUCENE-1452: Fixed silent data-loss case whereby binary fields are |
| truncated to 0 bytes during merging if the segments being merged |
| are non-congruent (same field name maps to different field |
| numbers). This bug was introduced with LUCENE-1219. (Andrzej |
| Bialecki via Mike McCandless). |
| |
| 2. LUCENE-1429: Don't throw incorrect IllegalStateException from |
| IndexWriter.close() if you've hit an OOM when autoCommit is true. |
| (Mike McCandless) |
| |
| 3. LUCENE-1474: If IndexReader.flush() is called twice when there were |
| pending deletions, it could lead to later false AssertionError |
| during IndexReader.open. (Mike McCandless) |
| |
| 4. LUCENE-1430: Fix false AlreadyClosedException from IndexReader.open |
| (masking an actual IOException) that takes String or File path. |
| (Mike McCandless) |
| |
| 5. LUCENE-1442: Multiple-valued NOT_ANALYZED fields can double-count |
| token offsets. (Mike McCandless) |
| |
| 6. LUCENE-1453: Ensure IndexReader.reopen()/clone() does not result in |
| incorrectly closing the shared FSDirectory. This bug would only |
| happen if you use IndexReader.open() with a File or String argument. |
| The returned readers are wrapped by a FilterIndexReader that |
| correctly handles closing of directory after reopen()/clone(). |
| (Mark Miller, Uwe Schindler, Mike McCandless) |
| |
| 7. LUCENE-1457: Fix possible overflow bugs during binary |
| searches. (Mark Miller via Mike McCandless) |
| |
| 8. LUCENE-1459: Fix CachingWrapperFilter to not throw exception if |
| both bits() and getDocIdSet() methods are called. (Matt Jones via |
| Mike McCandless) |
| |
| 9. LUCENE-1519: Fix int overflow bug during segment merging. (Deepak |
| via Mike McCandless) |
| |
| 10. LUCENE-1521: Fix int overflow bug when flushing segment. |
| (Shon Vella via Mike McCandless). |
| |
| 11. LUCENE-1544: Fix deadlock in IndexWriter.addIndexes(IndexReader[]). |
| (Mike McCandless via Doug Sale) |
| |
| 12. LUCENE-1547: Fix rare thread safety issue if two threads call |
| IndexWriter commit() at the same time. (Mike McCandless) |
| |
| 13. LUCENE-1465: NearSpansOrdered returns payloads from first possible match |
| rather than the correct, shortest match; Payloads could be returned even |
| if the max slop was exceeded; The wrong payload could be returned in |
| certain situations. (Jonathan Mamou, Greg Shackles, Mark Miller) |
| |
| 14. LUCENE-1186: Add Analyzer.close() to free internal ThreadLocal |
| resources. (Christian KohlschĂĽtter via Mike McCandless) |
| |
| 15. LUCENE-1552: Fix IndexWriter.addIndexes(IndexReader[]) to properly |
| rollback IndexWriter's internal state on hitting an |
| exception. (Scott Garland via Mike McCandless) |
| |
| ======================= Release 2.4.0 ======================= |
| |
| Changes in backwards compatibility policy |
| |
| 1. LUCENE-1340: In a minor change to Lucene's backward compatibility |
| policy, we are now allowing the Fieldable interface to have |
| changes, within reason, and made on a case-by-case basis. If an |
| application implements it's own Fieldable, please be aware of |
| this. Otherwise, no need to be concerned. This is in effect for |
| all 2.X releases, starting with 2.4. Also note, that in all |
| likelihood, Fieldable will be changed in 3.0. |
| |
| |
| Changes in runtime behavior |
| |
| 1. LUCENE-1151: Fix StandardAnalyzer to not mis-identify host names |
| (eg lucene.apache.org) as an ACRONYM. To get back to the pre-2.4 |
| backwards compatible, but buggy, behavior, you can either call |
| StandardAnalyzer.setDefaultReplaceInvalidAcronym(false) (static |
| method), or, set system property |
| org.apache.lucene.analysis.standard.StandardAnalyzer.replaceInvalidAcronym |
| to "false" on JVM startup. All StandardAnalyzer instances created |
| after that will then show the pre-2.4 behavior. Alternatively, |
| you can call setReplaceInvalidAcronym(false) to change the |
| behavior per instance of StandardAnalyzer. This backwards |
| compatibility will be removed in 3.0 (hardwiring the value to |
| true). (Mike McCandless) |
| |
| 2. LUCENE-1044: IndexWriter with autoCommit=true now commits (such |
| that a reader can see the changes) far less often than it used to. |
| Previously, every flush was also a commit. You can always force a |
| commit by calling IndexWriter.commit(). Furthermore, in 3.0, |
| autoCommit will be hardwired to false (IndexWriter constructors |
| that take an autoCommit argument have been deprecated) (Mike |
| McCandless) |
| |
| 3. LUCENE-1335: IndexWriter.addIndexes(Directory[]) and |
| addIndexesNoOptimize no longer allow the same Directory instance |
| to be passed in more than once. Internally, IndexWriter uses |
| Directory and segment name to uniquely identify segments, so |
| adding the same Directory more than once was causing duplicates |
| which led to problems (Mike McCandless) |
| |
| 4. LUCENE-1396: Improve PhraseQuery.toString() so that gaps in the |
| positions are indicated with a ? and multiple terms at the same |
| position are joined with a |. (Andrzej Bialecki via Mike |
| McCandless) |
| |
| API Changes |
| |
| 1. LUCENE-1084: Changed all IndexWriter constructors to take an |
| explicit parameter for maximum field size. Deprecated all the |
| pre-existing constructors; these will be removed in release 3.0. |
| NOTE: these new constructors set autoCommit to false. (Steven |
| Rowe via Mike McCandless) |
| |
| 2. LUCENE-584: Changed Filter API to return a DocIdSet instead of a |
| java.util.BitSet. This allows using more efficient data structures |
| for Filters and makes them more flexible. This deprecates |
| Filter.bits(), so all filters that implement this outside |
| the Lucene code base will need to be adapted. See also the javadocs |
| of the Filter class. (Paul Elschot, Michael Busch) |
| |
| 3. LUCENE-1044: Added IndexWriter.commit() which flushes any buffered |
| adds/deletes and then commits a new segments file so readers will |
| see the changes. Deprecate IndexWriter.flush() in favor of |
| IndexWriter.commit(). (Mike McCandless) |
| |
| 4. LUCENE-325: Added IndexWriter.expungeDeletes methods, which |
| consult the MergePolicy to find merges necessary to merge away all |
| deletes from the index. This should be a somewhat lower cost |
| operation than optimize. (John Wang via Mike McCandless) |
| |
| 5. LUCENE-1233: Return empty array instead of null when no fields |
| match the specified name in these methods in Document: |
| getFieldables, getFields, getValues, getBinaryValues. (Stefan |
| Trcek vai Mike McCandless) |
| |
| 6. LUCENE-1234: Make BoostingSpanScorer protected. (Andi Vajda via Grant Ingersoll) |
| |
| 7. LUCENE-510: The index now stores strings as true UTF-8 bytes |
| (previously it was Java's modified UTF-8). If any text, either |
| stored fields or a token, has illegal UTF-16 surrogate characters, |
| these characters are now silently replaced with the Unicode |
| replacement character U+FFFD. This is a change to the index file |
| format. (Marvin Humphrey via Mike McCandless) |
| |
| 8. LUCENE-852: Let the SpellChecker caller specify IndexWriter mergeFactor |
| and RAM buffer size. (Otis Gospodnetic) |
| |
| 9. LUCENE-1290: Deprecate org.apache.lucene.search.Hits, Hit and HitIterator |
| and remove all references to these classes from the core. Also update demos |
| and tutorials. (Michael Busch) |
| |
| 10. LUCENE-1288: Add getVersion() and getGeneration() to IndexCommit. |
| getVersion() returns the same value that IndexReader.getVersion() |
| returns when the reader is opened on the same commit. (Jason |
| Rutherglen via Mike McCandless) |
| |
| 11. LUCENE-1311: Added IndexReader.listCommits(Directory) static |
| method to list all commits in a Directory, plus IndexReader.open |
| methods that accept an IndexCommit and open the index as of that |
| commit. These methods are only useful if you implement a custom |
| DeletionPolicy that keeps more than the last commit around. |
| (Jason Rutherglen via Mike McCandless) |
| |
| 12. LUCENE-1325: Added IndexCommit.isOptimized(). (Shalin Shekhar |
| Mangar via Mike McCandless) |
| |
| 13. LUCENE-1324: Added TokenFilter.reset(). (Shai Erera via Mike |
| McCandless) |
| |
| 14. LUCENE-1340: Added Fieldable.omitTf() method to skip indexing term |
| frequency, positions and payloads. This saves index space, and |
| indexing/searching time. (Eks Dev via Mike McCandless) |
| |
| 15. LUCENE-1219: Add basic reuse API to Fieldable for binary fields: |
| getBinaryValue/Offset/Length(); currently only lazy fields reuse |
| the provided byte[] result to getBinaryValue. (Eks Dev via Mike |
| McCandless) |
| |
| 16. LUCENE-1334: Add new constructor for Term: Term(String fieldName) |
| which defaults term text to "". (DM Smith via Mike McCandless) |
| |
| 17. LUCENE-1333: Added Token.reinit(*) APIs to re-initialize (reuse) a |
| Token. Also added term() method to return a String, with a |
| performance penalty clearly documented. Also implemented |
| hashCode() and equals() in Token, and fixed all core and contrib |
| analyzers to use the re-use APIs. (DM Smith via Mike McCandless) |
| |
| 18. LUCENE-1329: Add optional readOnly boolean when opening an |
| IndexReader. A readOnly reader is not allowed to make changes |
| (deletions, norms) to the index; in exchanged, the isDeleted |
| method, often a bottleneck when searching with many threads, is |
| not synchronized. The default for readOnly is still false, but in |
| 3.0 the default will become true. (Jason Rutherglen via Mike |
| McCandless) |
| |
| 19. LUCENE-1367: Add IndexCommit.isDeleted(). (Shalin Shekhar Mangar |
| via Mike McCandless) |
| |
| 20. LUCENE-1061: Factored out all "new XXXQuery(...)" in |
| QueryParser.java into protected methods newXXXQuery(...) so that |
| subclasses can create their own subclasses of each Query type. |
| (John Wang via Mike McCandless) |
| |
| 21. LUCENE-753: Added new Directory implementation |
| org.apache.lucene.store.NIOFSDirectory, which uses java.nio's |
| FileChannel to do file reads. On most non-Windows platforms, with |
| many threads sharing a single searcher, this may yield sizable |
| improvement to query throughput when compared to FSDirectory, |
| which only allows a single thread to read from an open file at a |
| time. (Jason Rutherglen via Mike McCandless) |
| |
| 22. LUCENE-1371: Added convenience method TopDocs Searcher.search(Query query, int n). |
| (Mike McCandless) |
| |
| 23. LUCENE-1356: Allow easy extensions of TopDocCollector by turning |
| constructor and fields from package to protected. (Shai Erera |
| via Doron Cohen) |
| |
| 24. LUCENE-1375: Added convenience method IndexCommit.getTimestamp, |
| which is equivalent to |
| getDirectory().fileModified(getSegmentsFileName()). (Mike McCandless) |
| |
| 23. LUCENE-1366: Rename Field.Index options to be more accurate: |
| TOKENIZED becomes ANALYZED; UN_TOKENIZED becomes NOT_ANALYZED; |
| NO_NORMS becomes NOT_ANALYZED_NO_NORMS and a new ANALYZED_NO_NORMS |
| is added. (Mike McCandless) |
| |
| 24. LUCENE-1131: Added numDeletedDocs method to IndexReader (Otis Gospodnetic) |
| |
| Bug fixes |
| |
| 1. LUCENE-1134: Fixed BooleanQuery.rewrite to only optimize a single |
| clause query if minNumShouldMatch<=0. (Shai Erera via Michael Busch) |
| |
| 2. LUCENE-1169: Fixed bug in IndexSearcher.search(): searching with |
| a filter might miss some hits because scorer.skipTo() is called |
| without checking if the scorer is already at the right position. |
| scorer.skipTo(scorer.doc()) is not a NOOP, it behaves as |
| scorer.next(). (Eks Dev, Michael Busch) |
| |
| 3. LUCENE-1182: Added scorePayload to SimilarityDelegator (Andi Vajda via Grant Ingersoll) |
| |
| 4. LUCENE-1213: MultiFieldQueryParser was ignoring slop in case |
| of a single field phrase. (Trejkaz via Doron Cohen) |
| |
| 5. LUCENE-1228: IndexWriter.commit() was not updating the index version and as |
| result IndexReader.reopen() failed to sense index changes. (Doron Cohen) |
| |
| 6. LUCENE-1267: Added numDocs() and maxDoc() to IndexWriter; |
| deprecated docCount(). (Mike McCandless) |
| |
| 7. LUCENE-1274: Added new prepareCommit() method to IndexWriter, |
| which does phase 1 of a 2-phase commit (commit() does phase 2). |
| This is needed when you want to update an index as part of a |
| transaction involving external resources (eg a database). Also |
| deprecated abort(), renaming it to rollback(). (Mike McCandless) |
| |
| 8. LUCENE-1003: Stop RussianAnalyzer from removing numbers. |
| (TUSUR OpenTeam, Dmitry Lihachev via Otis Gospodnetic) |
| |
| 9. LUCENE-1152: SpellChecker fix around clearIndex and indexDictionary |
| methods, plus removal of IndexReader reference. |
| (Naveen Belkale via Otis Gospodnetic) |
| |
| 10. LUCENE-1046: Removed dead code in SpellChecker |
| (Daniel Naber via Otis Gospodnetic) |
| |
| 11. LUCENE-1189: Fixed the QueryParser to handle escaped characters within |
| quoted terms correctly. (Tomer Gabel via Michael Busch) |
| |
| 12. LUCENE-1299: Fixed NPE in SpellChecker when IndexReader is not null and field is (Grant Ingersoll) |
| |
| 13. LUCENE-1303: Fixed BoostingTermQuery's explanation to be marked as a Match |
| depending only upon the non-payload score part, regardless of the effect of |
| the payload on the score. Prior to this, score of a query containing a BTQ |
| differed from its explanation. (Doron Cohen) |
| |
| 14. LUCENE-1310: Fixed SloppyPhraseScorer to work also for terms repeating more |
| than twice in the query. (Doron Cohen) |
| |
| 15. LUCENE-1351: ISOLatin1AccentFilter now cleans additional ligatures (Cedrik Lime via Grant Ingersoll) |
| |
| 16. LUCENE-1383: Workaround a nasty "leak" in Java's builtin |
| ThreadLocal, to prevent Lucene from causing unexpected |
| OutOfMemoryError in certain situations (notably J2EE |
| applications). (Chris Lu via Mike McCandless) |
| |
| New features |
| |
| 1. LUCENE-1137: Added Token.set/getFlags() accessors for passing more information about a Token through the analysis |
| process. The flag is not indexed/stored and is thus only used by analysis. |
| |
| 2. LUCENE-1147: Add -segment option to CheckIndex tool so you can |
| check only a specific segment or segments in your index. (Mike |
| McCandless) |
| |
| 3. LUCENE-1045: Reopened this issue to add support for short and bytes. |
| |
| 4. LUCENE-584: Added new data structures to o.a.l.util, such as |
| OpenBitSet and SortedVIntList. These extend DocIdSet and can |
| directly be used for Filters with the new Filter API. Also changed |
| the core Filters to use OpenBitSet instead of java.util.BitSet. |
| (Paul Elschot, Michael Busch) |
| |
| 5. LUCENE-494: Added QueryAutoStopWordAnalyzer to allow for the automatic removal, from a query of frequently occurring terms. |
| This Analyzer is not intended for use during indexing. (Mark Harwood via Grant Ingersoll) |
| |
| 6. LUCENE-1044: Change Lucene to properly "sync" files after |
| committing, to ensure on a machine or OS crash or power cut, even |
| with cached writes, the index remains consistent. Also added |
| explicit commit() method to IndexWriter to force a commit without |
| having to close. (Mike McCandless) |
| |
| 7. LUCENE-997: Add search timeout (partial) support. |
| A TimeLimitedCollector was added to allow limiting search time. |
| It is a partial solution since timeout is checked only when |
| collecting a hit, and therefore a search for rare words in a |
| huge index might not stop within the specified time. |
| (Sean Timm via Doron Cohen) |
| |
| 8. LUCENE-1184: Allow SnapshotDeletionPolicy to be re-used across |
| close/re-open of IndexWriter while still protecting an open |
| snapshot (Tim Brennan via Mike McCandless) |
| |
| 9. LUCENE-1194: Added IndexWriter.deleteDocuments(Query) to delete |
| documents matching the specified query. Also added static unlock |
| and isLocked methods (deprecating the ones in IndexReader). (Mike |
| McCandless) |
| |
| 10. LUCENE-1201: Add IndexReader.getIndexCommit() method. (Tim Brennan |
| via Mike McCandless) |
| |
| 11. LUCENE-550: Added InstantiatedIndex implementation. Experimental |
| Index store similar to MemoryIndex but allows for multiple documents |
| in memory. (Karl Wettin via Grant Ingersoll) |
| |
| 12. LUCENE-400: Added word based n-gram filter (in contrib/analyzers) called ShingleFilter and an Analyzer wrapper |
| that wraps another Analyzer's token stream with a ShingleFilter (Sebastian Kirsch, Steve Rowe via Grant Ingersoll) |
| |
| 13. LUCENE-1166: Decomposition tokenfilter for languages like German and Swedish (Thomas Peuss via Grant Ingersoll) |
| |
| 14. LUCENE-1187: ChainedFilter and BooleanFilter now work with new Filter API |
| and DocIdSetIterator-based filters. Backwards-compatibility with old |
| BitSet-based filters is ensured. (Paul Elschot via Michael Busch) |
| |
| 15. LUCENE-1295: Added new method to MoreLikeThis for retrieving interesting terms and made retrieveTerms(int) public. (Grant Ingersoll) |
| |
| 16. LUCENE-1298: MoreLikeThis can now accept a custom Similarity (Grant Ingersoll) |
| |
| 17. LUCENE-1297: Allow other string distance measures for the SpellChecker |
| (Thomas Morton via Otis Gospodnetic) |
| |
| 18. LUCENE-1001: Provide access to Payloads via Spans. All existing Span Query implementations in Lucene implement. (Mark Miller, Grant Ingersoll) |
| |
| 19. LUCENE-1354: Provide programmatic access to CheckIndex (Grant Ingersoll, Mike McCandless) |
| |
| 20. LUCENE-1279: Add support for Collators to RangeFilter/Query and Query Parser. (Steve Rowe via Grant Ingersoll) |
| |
| Optimizations |
| |
| 1. LUCENE-705: When building a compound file, use |
| RandomAccessFile.setLength() to tell the OS/filesystem to |
| pre-allocate space for the file. This may improve fragmentation |
| in how the CFS file is stored, and allows us to detect an upcoming |
| disk full situation before actually filling up the disk. (Mike |
| McCandless) |
| |
| 2. LUCENE-1120: Speed up merging of term vectors by bulk-copying the |
| raw bytes for each contiguous range of non-deleted documents. |
| (Mike McCandless) |
| |
| 3. LUCENE-1185: Avoid checking if the TermBuffer 'scratch' in |
| SegmentTermEnum is null for every call of scanTo(). |
| (Christian Kohlschuetter via Michael Busch) |
| |
| 4. LUCENE-1217: Internal to Field.java, use isBinary instead of |
| runtime type checking for possible speedup of binaryValue(). |
| (Eks Dev via Mike McCandless) |
| |
| 5. LUCENE-1183: Optimized TRStringDistance class (in contrib/spell) that uses |
| less memory than the previous version. (CĂ©drik LIME via Otis Gospodnetic) |
| |
| 6. LUCENE-1195: Improve term lookup performance by adding a LRU cache to the |
| TermInfosReader. In performance experiments the speedup was about 25% on |
| average on mid-size indexes with ~500,000 documents for queries with 3 |
| terms and about 7% on larger indexes with ~4.3M documents. (Michael Busch) |
| |
| Documentation |
| |
| 1. LUCENE-1236: Added some clarifying remarks to EdgeNGram*.java (Hiroaki Kawai via Grant Ingersoll) |
| |
| 2. LUCENE-1157 and LUCENE-1256: HTML changes log, created automatically |
| from CHANGES.txt. This HTML file is currently visible only via developers page. |
| (Steven Rowe via Doron Cohen) |
| |
| 3. LUCENE-1349: Fieldable can now be changed without breaking backward compatibility rules (within reason. See the note at |
| the top of this file and also on Fieldable.java). (Grant Ingersoll) |
| |
| 4. LUCENE-1873: Update documentation to reflect current Contrib area status. |
| (Steven Rowe, Mark Miller) |
| |
| Build |
| |
| 1. LUCENE-1153: Added JUnit JAR to new lib directory. Updated build to rely on local JUnit instead of ANT/lib. |
| |
| 2. LUCENE-1202: Small fixes to the way Clover is used to work better |
| with contribs. Of particular note: a single clover db is used |
| regardless of whether tests are run globally or in the specific |
| contrib directories. |
| |
| 3. LUCENE-1353: Javacc target in contrib/miscellaneous for |
| generating the precedence query parser. |
| |
| Test Cases |
| |
| 1. LUCENE-1238: Fixed intermittent failures of TestTimeLimitedCollector.testTimeoutMultiThreaded. |
| Within this fix, "greedy" flag was added to TimeLimitedCollector, to allow the wrapped |
| collector to collect also the last doc, after allowed-tTime passed. (Doron Cohen) |
| |
| 2. LUCENE-1348: relax TestTimeLimitedCollector to not fail due to |
| timeout exceeded (just because test machine is very busy). |
| |
| ======================= Release 2.3.2 ======================= |
| |
| Bug fixes |
| |
| 1. LUCENE-1191: On hitting OutOfMemoryError in any index-modifying |
| methods in IndexWriter, do not commit any further changes to the |
| index to prevent risk of possible corruption. (Mike McCandless) |
| |
| 2. LUCENE-1197: Fixed issue whereby IndexWriter would flush by RAM |
| too early when TermVectors were in use. (Mike McCandless) |
| |
| 3. LUCENE-1198: Don't corrupt index if an exception happens inside |
| DocumentsWriter.init (Mike McCandless) |
| |
| 4. LUCENE-1199: Added defensive check for null indexReader before |
| calling close in IndexModifier.close() (Mike McCandless) |
| |
| 5. LUCENE-1200: Fix rare deadlock case in addIndexes* when |
| ConcurrentMergeScheduler is in use (Mike McCandless) |
| |
| 6. LUCENE-1208: Fix deadlock case on hitting an exception while |
| processing a document that had triggered a flush (Mike McCandless) |
| |
| 7. LUCENE-1210: Fix deadlock case on hitting an exception while |
| starting a merge when using ConcurrentMergeScheduler (Mike McCandless) |
| |
| 8. LUCENE-1222: Fix IndexWriter.doAfterFlush to always be called on |
| flush (Mark Ferguson via Mike McCandless) |
| |
| 9. LUCENE-1226: Fixed IndexWriter.addIndexes(IndexReader[]) to commit |
| successfully created compound files. (Michael Busch) |
| |
| 10. LUCENE-1150: Re-expose StandardTokenizer's constants publicly; |
| this was accidentally lost with LUCENE-966. (Nicolas Lalevée via |
| Mike McCandless) |
| |
| 11. LUCENE-1262: Fixed bug in BufferedIndexReader.refill whereby on |
| hitting an exception in readInternal, the buffer is incorrectly |
| filled with stale bytes such that subsequent calls to readByte() |
| return incorrect results. (Trejkaz via Mike McCandless) |
| |
| 12. LUCENE-1270: Fixed intermittent case where IndexWriter.close() |
| would hang after IndexWriter.addIndexesNoOptimize had been |
| called. (Stu Hood via Mike McCandless) |
| |
| Build |
| |
| 1. LUCENE-1230: Include *pom.xml* in source release files. (Michael Busch) |
| |
| |
| ======================= Release 2.3.1 ======================= |
| |
| Bug fixes |
| |
| 1. LUCENE-1168: Fixed corruption cases when autoCommit=false and |
| documents have mixed term vectors (Suresh Guvvala via Mike |
| McCandless). |
| |
| 2. LUCENE-1171: Fixed some cases where OOM errors could cause |
| deadlock in IndexWriter (Mike McCandless). |
| |
| 3. LUCENE-1173: Fixed corruption case when autoCommit=false and bulk |
| merging of stored fields is used (Yonik via Mike McCandless). |
| |
| 4. LUCENE-1163: Fixed bug in CharArraySet.contains(char[] buffer, int |
| offset, int len) that was ignoring offset and thus giving the |
| wrong answer. (Thomas Peuss via Mike McCandless) |
| |
| 5. LUCENE-1177: Fix rare case where IndexWriter.optimize might do too |
| many merges at the end. (Mike McCandless) |
| |
| 6. LUCENE-1176: Fix corruption case when documents with no term |
| vector fields are added before documents with term vector fields. |
| (Mike McCandless) |
| |
| 7. LUCENE-1179: Fixed assert statement that was incorrectly |
| preventing Fields with empty-string field name from working. |
| (Sergey Kabashnyuk via Mike McCandless) |
| |
| ======================= Release 2.3.0 ======================= |
| |
| Changes in runtime behavior |
| |
| 1. LUCENE-994: Defaults for IndexWriter have been changed to maximize |
| out-of-the-box indexing speed. First, IndexWriter now flushes by |
| RAM usage (16 MB by default) instead of a fixed doc count (call |
| IndexWriter.setMaxBufferedDocs to get backwards compatible |
| behavior). Second, ConcurrentMergeScheduler is used to run merges |
| using background threads (call IndexWriter.setMergeScheduler(new |
| SerialMergeScheduler()) to get backwards compatible behavior). |
| Third, merges are chosen based on size in bytes of each segment |
| rather than document count of each segment (call |
| IndexWriter.setMergePolicy(new LogDocMergePolicy()) to get |
| backwards compatible behavior). |
| |
| NOTE: users of ParallelReader must change back all of these |
| defaults in order to ensure the docIDs "align" across all parallel |
| indices. |
| |
| (Mike McCandless) |
| |
| 2. LUCENE-1045: SortField.AUTO didn't work with long. When detecting |
| the field type for sorting automatically, numbers used to be |
| interpreted as int, then as float, if parsing the number as an int |
| failed. Now the detection checks for int, then for long, |
| then for float. (Daniel Naber) |
| |
| API Changes |
| |
| 1. LUCENE-843: Added IndexWriter.setRAMBufferSizeMB(...) to have |
| IndexWriter flush whenever the buffered documents are using more |
| than the specified amount of RAM. Also added new APIs to Token |
| that allow one to set a char[] plus offset and length to specify a |
| token (to avoid creating a new String() for each Token). (Mike |
| McCandless) |
| |
| 2. LUCENE-963: Add setters to Field to allow for re-using a single |
| Field instance during indexing. This is a sizable performance |
| gain, especially for small documents. (Mike McCandless) |
| |
| 3. LUCENE-969: Add new APIs to Token, TokenStream and Analyzer to |
| permit re-using of Token and TokenStream instances during |
| indexing. Changed Token to use a char[] as the store for the |
| termText instead of String. This gives faster tokenization |
| performance (~10-15%). (Mike McCandless) |
| |
| 4. LUCENE-847: Factored MergePolicy, which determines which merges |
| should take place and when, as well as MergeScheduler, which |
| determines when the selected merges should actually run, out of |
| IndexWriter. The default merge policy is now |
| LogByteSizeMergePolicy (see LUCENE-845) and the default merge |
| scheduler is now ConcurrentMergeScheduler (see |
| LUCENE-870). (Steven Parkes via Mike McCandless) |
| |
| 5. LUCENE-1052: Add IndexReader.setTermInfosIndexDivisor(int) method |
| that allows you to reduce memory usage of the termInfos by further |
| sub-sampling (over the termIndexInterval that was used during |
| indexing) which terms are loaded into memory. (Chuck Williams, |
| Doug Cutting via Mike McCandless) |
| |
| 6. LUCENE-743: Add IndexReader.reopen() method that re-opens an |
| existing IndexReader (see New features -> 8.) (Michael Busch) |
| |
| 7. LUCENE-1062: Add setData(byte[] data), |
| setData(byte[] data, int offset, int length), getData(), getOffset() |
| and clone() methods to o.a.l.index.Payload. Also add the field name |
| as arg to Similarity.scorePayload(). (Michael Busch) |
| |
| 8. LUCENE-982: Add IndexWriter.optimize(int maxNumSegments) method to |
| "partially optimize" an index down to maxNumSegments segments. |
| (Mike McCandless) |
| |
| 9. LUCENE-1080: Changed Token.DEFAULT_TYPE to be public. |
| |
| 10. LUCENE-1064: Changed TopDocs constructor to be public. |
| (Shai Erera via Michael Busch) |
| |
| 11. LUCENE-1079: DocValues cleanup: constructor now has no params, |
| and getInnerArray() now throws UnsupportedOperationException (Doron Cohen) |
| |
| 12. LUCENE-1089: Added PriorityQueue.insertWithOverflow, which returns |
| the Object (if any) that was bumped from the queue to allow |
| re-use. (Shai Erera via Mike McCandless) |
| |
| 13. LUCENE-1101: Token reuse 'contract' (defined LUCENE-969) |
| modified so it is token producer's responsibility |
| to call Token.clear(). (Doron Cohen) |
| |
| 14. LUCENE-1118: Changed StandardAnalyzer to skip too-long (default > |
| 255 characters) tokens. You can increase this limit by calling |
| StandardAnalyzer.setMaxTokenLength(...). (Michael McCandless) |
| |
| |
| Bug fixes |
| |
| 1. LUCENE-933: QueryParser fixed to not produce empty sub |
| BooleanQueries "()" even if the Analyzer produced no |
| tokens for input. (Doron Cohen) |
| |
| 2. LUCENE-955: Fixed SegmentTermPositions to work correctly with the |
| first term in the dictionary. (Michael Busch) |
| |
| 3. LUCENE-951: Fixed NullPointerException in MultiLevelSkipListReader |
| that was thrown after a call of TermPositions.seek(). |
| (Rich Johnson via Michael Busch) |
| |
| 4. LUCENE-938: Fixed cases where an unhandled exception in |
| IndexWriter's methods could cause deletes to be lost. |
| (Steven Parkes via Mike McCandless) |
| |
| 5. LUCENE-962: Fixed case where an unhandled exception in |
| IndexWriter.addDocument or IndexWriter.updateDocument could cause |
| unreferenced files in the index to not be deleted |
| (Steven Parkes via Mike McCandless) |
| |
| 6. LUCENE-957: RAMDirectory fixed to properly handle directories |
| larger than Integer.MAX_VALUE. (Doron Cohen) |
| |
| 7. LUCENE-781: MultiReader fixed to not throw NPE if isCurrent(), |
| isOptimized() or getVersion() is called. Separated MultiReader |
| into two classes: MultiSegmentReader extends IndexReader, is |
| package-protected and is created automatically by IndexReader.open() |
| in case the index has multiple segments. The public MultiReader |
| now extends MultiSegmentReader and is intended to be used by users |
| who want to add their own subreaders. (Daniel Naber, Michael Busch) |
| |
| 8. LUCENE-970: FilterIndexReader now implements isOptimized(). Before |
| a call of isOptimized() would throw a NPE. (Michael Busch) |
| |
| 9. LUCENE-832: ParallelReader fixed to not throw NPE if isCurrent(), |
| isOptimized() or getVersion() is called. (Michael Busch) |
| |
| 10. LUCENE-948: Fix FNFE exception caused by stale NFS client |
| directory listing caches when writers on different machines are |
| sharing an index over NFS and using a custom deletion policy (Mike |
| McCandless) |
| |
| 11. LUCENE-978: Ensure TermInfosReader, FieldsReader, and FieldsReader |
| close any streams they had opened if an exception is hit in the |
| constructor. (Ning Li via Mike McCandless) |
| |
| 12. LUCENE-985: If an extremely long term is in a doc (> 16383 chars), |
| we now throw an IllegalArgumentException saying the term is too |
| long, instead of cryptic ArrayIndexOutOfBoundsException. (Karl |
| Wettin via Mike McCandless) |
| |
| 13. LUCENE-991: The explain() method of BoostingTermQuery had errors |
| when no payloads were present on a document. (Peter Keegan via |
| Grant Ingersoll) |
| |
| 14. LUCENE-992: Fixed IndexWriter.updateDocument to be atomic again |
| (this was broken by LUCENE-843). (Ning Li via Mike McCandless) |
| |
| 15. LUCENE-1008: Fixed corruption case when document with no term |
| vector fields is added after documents with term vector fields. |
| This bug was introduced with LUCENE-843. (Grant Ingersoll via |
| Mike McCandless) |
| |
| 16. LUCENE-1006: Fixed QueryParser to accept a "" field value (zero |
| length quoted string.) (yonik) |
| |
| 17. LUCENE-1010: Fixed corruption case when document with no term |
| vector fields is added after documents with term vector fields. |
| This case is hit during merge and would cause an EOFException. |
| This bug was introduced with LUCENE-984. (Andi Vajda via Mike |
| McCandless) |
| |
| 19. LUCENE-1009: Fix merge slowdown with LogByteSizeMergePolicy when |
| autoCommit=false and documents are using stored fields and/or term |
| vectors. (Mark Miller via Mike McCandless) |
| |
| 20. LUCENE-1011: Fixed corruption case when two or more machines, |
| sharing an index over NFS, can be writers in quick succession. |
| (Patrick Kimber via Mike McCandless) |
| |
| 21. LUCENE-1028: Fixed Weight serialization for few queries: |
| DisjunctionMaxQuery, ValueSourceQuery, CustomScoreQuery. |
| Serialization check added for all queries. |
| (Kyle Maxwell via Doron Cohen) |
| |
| 22. LUCENE-1048: Fixed incorrect behavior in Lock.obtain(...) when the |
| timeout argument is very large (eg Long.MAX_VALUE). Also added |
| Lock.LOCK_OBTAIN_WAIT_FOREVER constant to never timeout. (Nikolay |
| Diakov via Mike McCandless) |
| |
| 23. LUCENE-1050: Throw LockReleaseFailedException in |
| Simple/NativeFSLockFactory if we fail to delete the lock file when |
| releasing the lock. (Nikolay Diakov via Mike McCandless) |
| |
| 24. LUCENE-1071: Fixed SegmentMerger to correctly set payload bit in |
| the merged segment. (Michael Busch) |
| |
| 25. LUCENE-1042: Remove throwing of IOException in getTermFreqVector(int, String, TermVectorMapper) to be consistent |
| with other getTermFreqVector calls. Also removed the throwing of the other IOException in that method to be consistent. (Karl Wettin via Grant Ingersoll) |
| |
| 26. LUCENE-1096: Fixed Hits behavior when hits' docs are deleted |
| along with iterating the hits. Deleting docs already retrieved |
| now works seamlessly. If docs not yet retrieved are deleted |
| (e.g. from another thread), and then, relying on the initial |
| Hits.length(), an application attempts to retrieve more hits |
| than actually exist , a ConcurrentMidificationException |
| is thrown. (Doron Cohen) |
| |
| 27. LUCENE-1068: Changed StandardTokenizer to fix an issue with it marking |
| the type of some tokens incorrectly. This is done by adding a new flag named |
| replaceInvalidAcronym which defaults to false, the current, incorrect behavior. Setting |
| this flag to true fixes the problem. This flag is a temporary fix and is already |
| marked as being deprecated. 3.x will implement the correct approach. (Shai Erera via Grant Ingersoll) |
| LUCENE-1140: Fixed NPE caused by 1068 (Alexei Dets via Grant Ingersoll) |
| |
| 28. LUCENE-749: ChainedFilter behavior fixed when logic of |
| first filter is ANDNOT. (Antonio Bruno via Doron Cohen) |
| |
| 29. LUCENE-508: Make sure SegmentTermEnum.prev() is accurate (= last |
| term) after next() returns false. (Steven Tamm via Mike |
| McCandless) |
| |
| |
| New features |
| |
| 1. LUCENE-906: Elision filter for French. |
| (Mathieu Lecarme via Otis Gospodnetic) |
| |
| 2. LUCENE-960: Added a SpanQueryFilter and related classes to allow for |
| not only filtering, but knowing where in a Document a Filter matches |
| (Grant Ingersoll) |
| |
| 3. LUCENE-868: Added new Term Vector access features. New callback |
| mechanism allows application to define how and where to read Term |
| Vectors from disk. This implementation contains several extensions |
| of the new abstract TermVectorMapper class. The new API should be |
| back-compatible. No changes in the actual storage of Term Vectors |
| has taken place. |
| 3.1 LUCENE-1038: Added setDocumentNumber() method to TermVectorMapper |
| to provide information about what document is being accessed. |
| (Karl Wettin via Grant Ingersoll) |
| |
| 4. LUCENE-975: Added PositionBasedTermVectorMapper that allows for |
| position based lookup of term vector information. |
| See item #3 above (LUCENE-868). |
| |
| 5. LUCENE-1011: Added simple tools (all in org.apache.lucene.store) |
| to verify that locking is working properly. LockVerifyServer runs |
| a separate server to verify locks. LockStressTest runs a simple |
| tool that rapidly obtains and releases locks. |
| VerifyingLockFactory is a LockFactory that wraps any other |
| LockFactory and consults the LockVerifyServer whenever a lock is |
| obtained or released, throwing an exception if an illegal lock |
| obtain occurred. (Patrick Kimber via Mike McCandless) |
| |
| 6. LUCENE-1015: Added FieldCache extension (ExtendedFieldCache) to |
| support doubles and longs. Added support into SortField for sorting |
| on doubles and longs as well. (Grant Ingersoll) |
| |
| 7. LUCENE-1020: Created basic index checking & repair tool |
| (o.a.l.index.CheckIndex). When run without -fix it does a |
| detailed test of all segments in the index and reports summary |
| information and any errors it hit. With -fix it will remove |
| segments that had errors. (Mike McCandless) |
| |
| 8. LUCENE-743: Add IndexReader.reopen() method that re-opens an |
| existing IndexReader by only loading those portions of an index |
| that have changed since the reader was (re)opened. reopen() can |
| be significantly faster than open(), depending on the amount of |
| index changes. SegmentReader, MultiSegmentReader, MultiReader, |
| and ParallelReader implement reopen(). (Michael Busch) |
| |
| 9. LUCENE-1040: CharArraySet useful for efficiently checking |
| set membership of text specified by char[]. (yonik) |
| |
| 10. LUCENE-1073: Created SnapshotDeletionPolicy to facilitate taking a |
| live backup of an index without pausing indexing. (Mike |
| McCandless) |
| |
| 11. LUCENE-1019: CustomScoreQuery enhanced to support multiple |
| ValueSource queries. (Kyle Maxwell via Doron Cohen) |
| |
| 12. LUCENE-1095: Added an option to StopFilter to increase |
| positionIncrement of the token succeeding a stopped token. |
| Disabled by default. Similar option added to QueryParser |
| to consider token positions when creating PhraseQuery |
| and MultiPhraseQuery. Disabled by default (so by default |
| the query parser ignores position increments). |
| (Doron Cohen) |
| |
| 13. LUCENE-1380: Added TokenFilter for setting position increment in special cases related to the ShingleFilter (Mck SembWever, Steve Rowe, Karl Wettin via Grant Ingersoll) |
| |
| |
| |
| Optimizations |
| |
| 1. LUCENE-937: CachingTokenFilter now uses an iterator to access the |
| Tokens that are cached in the LinkedList. This increases performance |
| significantly, especially when the number of Tokens is large. |
| (Mark Miller via Michael Busch) |
| |
| 2. LUCENE-843: Substantial optimizations to improve how IndexWriter |
| uses RAM for buffering documents and to speed up indexing (2X-8X |
| faster). A single shared hash table now records the in-memory |
| postings per unique term and is directly flushed into a single |
| segment. (Mike McCandless) |
| |
| 3. LUCENE-892: Fixed extra "buffer to buffer copy" that sometimes |
| takes place when using compound files. (Mike McCandless) |
| |
| 4. LUCENE-959: Remove synchronization in Document (yonik) |
| |
| 5. LUCENE-963: Add setters to Field to allow for re-using a single |
| Field instance during indexing. This is a sizable performance |
| gain, especially for small documents. (Mike McCandless) |
| |
| 6. LUCENE-939: Check explicitly for boundary conditions in FieldInfos |
| and don't rely on exceptions. (Michael Busch) |
| |
| 7. LUCENE-966: Very substantial speedups (~6X faster) for |
| StandardTokenizer (StandardAnalyzer) by using JFlex instead of |
| JavaCC to generate the tokenizer. |
| (Stanislaw Osinski via Mike McCandless) |
| |
| 8. LUCENE-969: Changed core tokenizers & filters to re-use Token and |
| TokenStream instances when possible to improve tokenization |
| performance (~10-15%). (Mike McCandless) |
| |
| 9. LUCENE-871: Speedup ISOLatin1AccentFilter (Ian Boston via Mike |
| McCandless) |
| |
| 10. LUCENE-986: Refactored SegmentInfos from IndexReader into the new |
| subclass DirectoryIndexReader. SegmentReader and MultiSegmentReader |
| now extend DirectoryIndexReader and are the only IndexReader |
| implementations that use SegmentInfos to access an index and |
| acquire a write lock for index modifications. (Michael Busch) |
| |
| 11. LUCENE-1007: Allow flushing in IndexWriter to be triggered by |
| either RAM usage or document count or both (whichever comes |
| first), by adding symbolic constant DISABLE_AUTO_FLUSH to disable |
| one of the flush triggers. (Ning Li via Mike McCandless) |
| |
| 12. LUCENE-1043: Speed up merging of stored fields by bulk-copying the |
| raw bytes for each contiguous range of non-deleted documents. |
| (Robert Engels via Mike McCandless) |
| |
| 13. LUCENE-693: Speed up nested conjunctions (~2x) that match many |
| documents, and a slight performance increase for top level |
| conjunctions. (yonik) |
| |
| 14. LUCENE-1098: Make inner class StandardAnalyzer.SavedStreams static |
| and final. (Nathan Beyer via Michael Busch) |
| |
| Documentation |
| |
| 1. LUCENE-1051: Generate separate javadocs for core, demo and contrib |
| classes, as well as an unified view. Also add an appropriate menu |
| structure to the website. (Michael Busch) |
| |
| 2. LUCENE-746: Fix error message in AnalyzingQueryParser.getPrefixQuery. |
| (Ronnie Kolehmainen via Michael Busch) |
| |
| Build |
| |
| 1. LUCENE-908: Improvements and simplifications for how the MANIFEST |
| file and the META-INF dir are created. (Michael Busch) |
| |
| 2. LUCENE-935: Various improvements for the maven artifacts. Now the |
| artifacts also include the sources as .jar files. (Michael Busch) |
| |
| 3. Added apply-patch target to top-level build. Defaults to looking for |
| a patch in ${basedir}/../patches with name specified by -Dpatch.name. |
| Can also specify any location by -Dpatch.file property on the command |
| line. This should be helpful for easy application of patches, but it |
| is also a step towards integrating automatic patch application with |
| JIRA and Hudson, and is thus subject to change. (Grant Ingersoll) |
| |
| 4. LUCENE-935: Defined property "m2.repository.url" to allow setting |
| the url to a maven remote repository to deploy to. (Michael Busch) |
| |
| 5. LUCENE-1051: Include javadocs in the maven artifacts. (Michael Busch) |
| |
| 6. LUCENE-1055: Remove gdata-server from build files and its sources |
| from trunk. (Michael Busch) |
| |
| 7. LUCENE-935: Allow to deploy maven artifacts to a remote m2 repository |
| via scp and ssh authentication. (Michael Busch) |
| |
| 8. LUCENE-1123: Allow overriding the specification version for |
| MANIFEST.MF (Michael Busch) |
| |
| Test Cases |
| |
| 1. LUCENE-766: Test adding two fields with the same name but different |
| term vector setting. (Nicolas Lalevée via Doron Cohen) |
| |
| ======================= Release 2.2.0 ======================= |
| |
| Changes in runtime behavior |
| |
| API Changes |
| |
| 1. LUCENE-793: created new exceptions and added them to throws clause |
| for many methods (all subclasses of IOException for backwards |
| compatibility): index.StaleReaderException, |
| index.CorruptIndexException, store.LockObtainFailedException. |
| This was done to better call out the possible root causes of an |
| IOException from these methods. (Mike McCandless) |
| |
| 2. LUCENE-811: make SegmentInfos class, plus a few methods from related |
| classes, package-private again (they were unnecessarily made public |
| as part of LUCENE-701). (Mike McCandless) |
| |
| 3. LUCENE-710: added optional autoCommit boolean to IndexWriter |
| constructors. When this is false, index changes are not committed |
| until the writer is closed. This gives explicit control over when |
| a reader will see the changes. Also added optional custom |
| deletion policy to explicitly control when prior commits are |
| removed from the index. This is intended to allow applications to |
| share an index over NFS by customizing when prior commits are |
| deleted. (Mike McCandless) |
| |
| 4. LUCENE-818: changed most public methods of IndexWriter, |
| IndexReader (and its subclasses), FieldsReader and RAMDirectory to |
| throw AlreadyClosedException if they are accessed after being |
| closed. (Mike McCandless) |
| |
| 5. LUCENE-834: Changed some access levels for certain Span classes to allow them |
| to be overridden. They have been marked expert only and not for public |
| consumption. (Grant Ingersoll) |
| |
| 6. LUCENE-796: Removed calls to super.* from various get*Query methods in |
| MultiFieldQueryParser, in order to allow sub-classes to override them. |
| (Steven Parkes via Otis Gospodnetic) |
| |
| 7. LUCENE-857: Removed caching from QueryFilter and deprecated QueryFilter |
| in favour of QueryWrapperFilter or QueryWrapperFilter + CachingWrapperFilter |
| combination when caching is desired. |
| (Chris Hostetter, Otis Gospodnetic) |
| |
| 8. LUCENE-869: Changed FSIndexInput and FSIndexOutput to inner classes of FSDirectory |
| to enable extensibility of these classes. (Michael Busch) |
| |
| 9. LUCENE-580: Added the public method reset() to TokenStream. This method does |
| nothing by default, but may be overwritten by subclasses to support consuming |
| the TokenStream more than once. (Michael Busch) |
| |
| 10. LUCENE-580: Added a new constructor to Field that takes a TokenStream as |
| argument, available as tokenStreamValue(). This is useful to avoid the need of |
| "dummy analyzers" for pre-analyzed fields. (Karl Wettin, Michael Busch) |
| |
| 11. LUCENE-730: Added the new methods to BooleanQuery setAllowDocsOutOfOrder() and |
| getAllowDocsOutOfOrder(). Deprecated the methods setUseScorer14() and |
| getUseScorer14(). The optimization patch LUCENE-730 (see Optimizations->3.) |
| improves performance for certain queries but results in scoring out of docid |
| order. This patch reverse this change, so now by default hit docs are scored |
| in docid order if not setAllowDocsOutOfOrder(true) is explicitly called. |
| This patch also enables the tests in QueryUtils again that check for docid |
| order. (Paul Elschot, Doron Cohen, Michael Busch) |
| |
| 12. LUCENE-888: Added Directory.openInput(File path, int bufferSize) |
| to optionally specify the size of the read buffer. Also added |
| BufferedIndexInput.setBufferSize(int) to change the buffer size. |
| (Mike McCandless) |
| |
| 13. LUCENE-923: Make SegmentTermPositionVector package-private. It does not need |
| to be public because it implements the public interface TermPositionVector. |
| (Michael Busch) |
| |
| Bug fixes |
| |
| 1. LUCENE-804: Fixed build.xml to pack a fully compilable src dist. (Doron Cohen) |
| |
| 2. LUCENE-813: Leading wildcard fixed to work with trailing wildcard. |
| Query parser modified to create a prefix query only for the case |
| that there is a single trailing wildcard (and no additional wildcard |
| or '?' in the query text). (Doron Cohen) |
| |
| 3. LUCENE-812: Add no-argument constructors to NativeFSLockFactory |
| and SimpleFSLockFactory. This enables all 4 builtin LockFactory |
| implementations to be specified via the System property |
| org.apache.lucene.store.FSDirectoryLockFactoryClass. (Mike McCandless) |
| |
| 4. LUCENE-821: The new single-norm-file introduced by LUCENE-756 |
| failed to reduce the number of open descriptors since it was still |
| opened once per field with norms. (yonik) |
| |
| 5. LUCENE-823: Make sure internal file handles are closed when |
| hitting an exception (eg disk full) while flushing deletes in |
| IndexWriter's mergeSegments, and also during |
| IndexWriter.addIndexes. (Mike McCandless) |
| |
| 6. LUCENE-825: If directory is removed after |
| FSDirectory.getDirectory() but before IndexReader.open you now get |
| a FileNotFoundException like Lucene pre-2.1 (before this fix you |
| got an NPE). (Mike McCandless) |
| |
| 7. LUCENE-800: Removed backslash from the TERM_CHAR list in the queryparser, |
| because the backslash is the escape character. Also changed the ESCAPED_CHAR |
| list to contain all possible characters, because every character that |
| follows a backslash should be considered as escaped. (Michael Busch) |
| |
| 8. LUCENE-372: QueryParser.parse() now ensures that the entire input string |
| is consumed. Now a ParseException is thrown if a query contains too many |
| closing parentheses. (Andreas Neumann via Michael Busch) |
| |
| 9. LUCENE-814: javacc build targets now fix line-end-style of generated files. |
| Now also deleting all javacc generated files before calling javacc. |
| (Steven Parkes, Doron Cohen) |
| |
| 10. LUCENE-829: close readers in contrib/benchmark. (Karl Wettin, Doron Cohen) |
| |
| 11. LUCENE-828: Minor fix for Term's equal(). |
| (Paul Cowan via Otis Gospodnetic) |
| |
| 12. LUCENE-846: Fixed: if IndexWriter is opened with autoCommit=false, |
| and you call addIndexes, and hit an exception (eg disk full) then |
| when IndexWriter rolls back its internal state this could corrupt |
| the instance of IndexWriter (but, not the index itself) by |
| referencing already deleted segments. This bug was only present |
| in 2.2 (trunk), ie was never released. (Mike McCandless) |
| |
| 13. LUCENE-736: Sloppy phrase query with repeating terms matches wrong docs. |
| For example query "B C B"~2 matches the doc "A B C D E". (Doron Cohen) |
| |
| 14. LUCENE-789: Fixed: custom similarity is ignored when using MultiSearcher (problem reported |
| by Alexey Lef). Now the similarity applied by MultiSearcer.setSimilarity(sim) is being used. |
| Note that as before this fix, creating a multiSearcher from Searchers for whom custom similarity |
| was set has no effect - it is masked by the similarity of the MultiSearcher. This is as |
| designed, because MultiSearcher operates on Searchables (not Searchers). (Doron Cohen) |
| |
| 15. LUCENE-880: Fixed DocumentWriter to close the TokenStreams after it |
| has written the postings. Then the resources associated with the |
| TokenStreams can safely be released. (Michael Busch) |
| |
| 16. LUCENE-883: consecutive calls to Spellchecker.indexDictionary() |
| won't insert terms twice anymore. (Daniel Naber) |
| |
| 17. LUCENE-881: QueryParser.escape() now also escapes the characters |
| '|' and '&' which are part of the queryparser syntax. (Michael Busch) |
| |
| 18. LUCENE-886: Spellchecker clean up: exceptions aren't printed to STDERR |
| anymore and ignored, but re-thrown. Some javadoc improvements. |
| (Daniel Naber) |
| |
| 19. LUCENE-698: FilteredQuery now takes the query boost into account for |
| scoring. (Michael Busch) |
| |
| 20. LUCENE-763: Spellchecker: LuceneDictionary used to skip first word in |
| enumeration. (Christian Mallwitz via Daniel Naber) |
| |
| 21. LUCENE-903: FilteredQuery explanation inaccuracy with boost. |
| Explanation tests now "deep" check the explanation details. |
| (Chris Hostetter, Doron Cohen) |
| |
| 22. LUCENE-912: DisjunctionMaxScorer first skipTo(target) call ignores the |
| skip target param and ends up at the first match. |
| (Sudaakeran B. via Chris Hostetter & Doron Cohen) |
| |
| 23. LUCENE-913: Two consecutive score() calls return different |
| scores for Boolean Queries. (Michael Busch, Doron Cohen) |
| |
| 24. LUCENE-1013: Fix IndexWriter.setMaxMergeDocs to work "out of the |
| box", again, by moving set/getMaxMergeDocs up from |
| LogDocMergePolicy into LogMergePolicy. This fixes the API |
| breakage (non backwards compatible change) caused by LUCENE-994. |
| (Yonik Seeley via Mike McCandless) |
| |
| New features |
| |
| 1. LUCENE-759: Added two n-gram-producing TokenFilters. |
| (Otis Gospodnetic) |
| |
| 2. LUCENE-822: Added FieldSelector capabilities to Searchable for use with |
| RemoteSearcher, and other Searchable implementations. (Mark Miller, Grant Ingersoll) |
| |
| 3. LUCENE-755: Added the ability to store arbitrary binary metadata in the posting list. |
| These metadata are called Payloads. For every position of a Token one Payload in the form |
| of a variable length byte array can be stored in the prox file. |
| Remark: The APIs introduced with this feature are in experimental state and thus |
| contain appropriate warnings in the javadocs. |
| (Michael Busch) |
| |
| 4. LUCENE-834: Added BoostingTermQuery which can boost scores based on the |
| values of a payload (see #3 above.) (Grant Ingersoll) |
| |
| 5. LUCENE-834: Similarity has a new method for scoring payloads called |
| scorePayloads that can be overridden to take advantage of payload |
| storage (see #3 above) |
| |
| 6. LUCENE-834: Added isPayloadAvailable() onto TermPositions interface and |
| implemented it in the appropriate places (Grant Ingersoll) |
| |
| 7. LUCENE-853: Added RemoteCachingWrapperFilter to enable caching of Filters |
| on the remote side of the RMI connection. |
| (Matt Ericson via Otis Gospodnetic) |
| |
| 8. LUCENE-446: Added Solr's search.function for scores based on field |
| values, plus CustomScoreQuery for simple score (post) customization. |
| (Yonik Seeley, Doron Cohen) |
| |
| 9. LUCENE-1058: Added new TeeTokenFilter (like the UNIX 'tee' command) and SinkTokenizer which can be used to share tokens between two or more |
| Fields such that the other Fields do not have to go through the whole Analysis process over again. For instance, if you have two |
| Fields that share all the same analysis steps except one lowercases tokens and the other does not, you can coordinate the operations |
| between the two using the TeeTokenFilter and the SinkTokenizer. See TeeSinkTokenTest.java for examples. |
| (Grant Ingersoll, Michael Busch, Yonik Seeley) |
| |
| Optimizations |
| |
| 1. LUCENE-761: The proxStream is now cloned lazily in SegmentTermPositions |
| when nextPosition() is called for the first time. This allows using instances |
| of SegmentTermPositions instead of SegmentTermDocs without additional costs. |
| (Michael Busch) |
| |
| 2. LUCENE-431: RAMInputStream and RAMOutputStream extend IndexInput and |
| IndexOutput directly now. This avoids further buffering and thus avoids |
| unnecessary array copies. (Michael Busch) |
| |
| 3. LUCENE-730: Updated BooleanScorer2 to make use of BooleanScorer in some |
| cases and possibly improve scoring performance. Documents can now be |
| delivered out-of-order as they are scored (e.g. to HitCollector). |
| N.B. A bit of code had to be disabled in QueryUtils in order for |
| TestBoolean2 test to keep passing. |
| (Paul Elschot via Otis Gospodnetic) |
| |
| 4. LUCENE-882: Spellchecker doesn't store the ngrams anymore but only indexes |
| them to keep the spell index small. (Daniel Naber) |
| |
| 5. LUCENE-430: Delay allocation of the buffer after a clone of BufferedIndexInput. |
| Together with LUCENE-888 this will allow to adjust the buffer size |
| dynamically. (Paul Elschot, Michael Busch) |
| |
| 6. LUCENE-888: Increase buffer sizes inside CompoundFileWriter and |
| BufferedIndexOutput. Also increase buffer size in |
| BufferedIndexInput, but only when used during merging. Together, |
| these increases yield 10-18% overall performance gain vs the |
| previous 1K defaults. (Mike McCandless) |
| |
| 7. LUCENE-866: Adds multi-level skip lists to the posting lists. This speeds |
| up most queries that use skipTo(), especially on big indexes with large posting |
| lists. For average AND queries the speedup is about 20%, for queries that |
| contain very frequent and very unique terms the speedup can be over 80%. |
| (Michael Busch) |
| |
| Documentation |
| |
| 1. LUCENE 791 && INFRA-1173: Infrastructure moved the Wiki to |
| http://wiki.apache.org/lucene-java/ Updated the links in the docs and |
| wherever else I found references. (Grant Ingersoll, Joe Schaefer) |
| |
| 2. LUCENE-807: Fixed the javadoc for ScoreDocComparator.compare() to be |
| consistent with java.util.Comparator.compare(): Any integer is allowed to |
| be returned instead of only -1/0/1. |
| (Paul Cowan via Michael Busch) |
| |
| 3. LUCENE-875: Solved javadoc warnings & errors under jdk1.4. |
| Solved javadoc errors under jdk5 (jars in path for gdata). |
| Made "javadocs" target depend on "build-contrib" for first downloading |
| contrib jars configured for dynamic downloaded. (Note: when running |
| behind firewall, a firewall prompt might pop up) (Doron Cohen) |
| |
| 4. LUCENE-740: Added SNOWBALL-LICENSE.txt to the snowball package and a |
| remark about the license to NOTICE.TXT. (Steven Parkes via Michael Busch) |
| |
| 5. LUCENE-925: Added analysis package javadocs. (Grant Ingersoll and Doron Cohen) |
| |
| 6. LUCENE-926: Added document package javadocs. (Grant Ingersoll) |
| |
| Build |
| |
| 1. LUCENE-802: Added LICENSE.TXT and NOTICE.TXT to Lucene jars. |
| (Steven Parkes via Michael Busch) |
| |
| 2. LUCENE-885: "ant test" now includes all contrib tests. The new |
| "ant test-core" target can be used to run only the Core (non |
| contrib) tests. |
| (Chris Hostetter) |
| |
| 3. LUCENE-900: "ant test" now enables Java assertions (in Lucene packages). |
| (Doron Cohen) |
| |
| 4. LUCENE-894: Add custom build file for binary distributions that includes |
| targets to build the demos. (Chris Hostetter, Michael Busch) |
| |
| 5. LUCENE-904: The "package" targets in build.xml now also generate .md5 |
| checksum files. (Chris Hostetter, Michael Busch) |
| |
| 6. LUCENE-907: Include LICENSE.TXT and NOTICE.TXT in the META-INF dirs of |
| demo war, demo jar, and the contrib jars. (Michael Busch) |
| |
| 7. LUCENE-909: Demo targets for running the demo. (Doron Cohen) |
| |
| 8. LUCENE-908: Improves content of MANIFEST file and makes it customizable |
| for the contribs. Adds SNOWBALL-LICENSE.txt to META-INF of the snowball |
| jar and makes sure that the lucli jar contains LICENSE.txt and NOTICE.txt. |
| (Chris Hostetter, Michael Busch) |
| |
| 9. LUCENE-930: Various contrib building improvements to ensure contrib |
| dependencies are met, and test compilation errors fail the build. |
| (Steven Parkes, Chris Hostetter) |
| |
| 10. LUCENE-622: Add ant target and pom.xml files for building maven artifacts |
| of the Lucene core and the contrib modules. |
| (Sami Siren, Karl Wettin, Michael Busch) |
| |
| ======================= Release 2.1.0 ======================= |
| |
| Changes in runtime behavior |
| |
| 1. 's' and 't' have been removed from the list of default stopwords |
| in StopAnalyzer (also used in by StandardAnalyzer). Having e.g. 's' |
| as a stopword meant that 's-class' led to the same results as 'class'. |
| Note that this problem still exists for 'a', e.g. in 'a-class' as |
| 'a' continues to be a stopword. |
| (Daniel Naber) |
| |
| 2. LUCENE-478: Updated the list of Unicode code point ranges for CJK |
| (now split into CJ and K) in StandardAnalyzer. (John Wang and |
| Steven Rowe via Otis Gospodnetic) |
| |
| 3. Modified some CJK Unicode code point ranges in StandardTokenizer.jj, |
| and added a few more of them to increase CJK character coverage. |
| Also documented some of the ranges. |
| (Otis Gospodnetic) |
| |
| 4. LUCENE-489: Add support for leading wildcard characters (*, ?) to |
| QueryParser. Default is to disallow them, as before. |
| (Steven Parkes via Otis Gospodnetic) |
| |
| 5. LUCENE-703: QueryParser changed to default to use of ConstantScoreRangeQuery |
| for range queries. Added useOldRangeQuery property to QueryParser to allow |
| selection of old RangeQuery class if required. |
| (Mark Harwood) |
| |
| 6. LUCENE-543: WildcardQuery now performs a TermQuery if the provided term |
| does not contain a wildcard character (? or *), when previously a |
| StringIndexOutOfBoundsException was thrown. |
| (Michael Busch via Erik Hatcher) |
| |
| 7. LUCENE-726: Removed the use of deprecated doc.fields() method and |
| Enumeration. |
| (Michael Busch via Otis Gospodnetic) |
| |
| 8. LUCENE-436: Removed finalize() in TermInfosReader and SegmentReader, |
| and added a call to enumerators.remove() in TermInfosReader.close(). |
| The finalize() overrides were added to help with a pre-1.4.2 JVM bug |
| that has since been fixed, plus we no longer support pre-1.4.2 JVMs. |
| (Otis Gospodnetic) |
| |
| 9. LUCENE-771: The default location of the write lock is now the |
| index directory, and is named simply "write.lock" (without a big |
| digest prefix). The system properties "org.apache.lucene.lockDir" |
| nor "java.io.tmpdir" are no longer used as the global directory |
| for storing lock files, and the LOCK_DIR field of FSDirectory is |
| now deprecated. (Mike McCandless) |
| |
| New features |
| |
| 1. LUCENE-503: New ThaiAnalyzer and ThaiWordFilter in contrib/analyzers |
| (Samphan Raruenrom via Chris Hostetter) |
| |
| 2. LUCENE-545: New FieldSelector API and associated changes to |
| IndexReader and implementations. New Fieldable interface for use |
| with the lazy field loading mechanism. (Grant Ingersoll and Chuck |
| Williams via Grant Ingersoll) |
| |
| 3. LUCENE-676: Move Solr's PrefixFilter to Lucene core. (Yura |
| Smolsky, Yonik Seeley) |
| |
| 4. LUCENE-678: Added NativeFSLockFactory, which implements locking |
| using OS native locking (via java.nio.*). (Michael McCandless via |
| Yonik Seeley) |
| |
| 5. LUCENE-544: Added the ability to specify different boosts for |
| different fields when using MultiFieldQueryParser (Matt Ericson |
| via Otis Gospodnetic) |
| |
| 6. LUCENE-528: New IndexWriter.addIndexesNoOptimize() that doesn't |
| optimize the index when adding new segments, only performing |
| merges as needed. (Ning Li via Yonik Seeley) |
| |
| 7. LUCENE-573: QueryParser now allows backslash escaping in |
| quoted terms and phrases. (Michael Busch via Yonik Seeley) |
| |
| 8. LUCENE-716: QueryParser now allows specification of Unicode |
| characters in terms via a unicode escape of the form \uXXXX |
| (Michael Busch via Yonik Seeley) |
| |
| 9. LUCENE-709: Added RAMDirectory.sizeInBytes(), IndexWriter.ramSizeInBytes() |
| and IndexWriter.flushRamSegments(), allowing applications to |
| control the amount of memory used to buffer documents. |
| (Chuck Williams via Yonik Seeley) |
| |
| 10. LUCENE-723: QueryParser now parses *:* as MatchAllDocsQuery |
| (Yonik Seeley) |
| |
| 11. LUCENE-741: Command-line utility for modifying or removing norms |
| on fields in an existing index. This is mostly based on LUCENE-496 |
| and lives in contrib/miscellaneous. |
| (Chris Hostetter, Otis Gospodnetic) |
| |
| 12. LUCENE-759: Added NGramTokenizer and EdgeNGramTokenizer classes and |
| their passing unit tests. |
| (Otis Gospodnetic) |
| |
| 13. LUCENE-565: Added methods to IndexWriter to more efficiently |
| handle updating documents (the "delete then add" use case). This |
| is intended to be an eventual replacement for the existing |
| IndexModifier. Added IndexWriter.flush() (renamed from |
| flushRamSegments()) to flush all pending updates (held in RAM), to |
| the Directory. (Ning Li via Mike McCandless) |
| |
| 14. LUCENE-762: Added in SIZE and SIZE_AND_BREAK FieldSelectorResult options |
| which allow one to retrieve the size of a field without retrieving the |
| actual field. (Chuck Williams via Grant Ingersoll) |
| |
| 15. LUCENE-799: Properly handle lazy, compressed fields. |
| (Mike Klaas via Grant Ingersoll) |
| |
| API Changes |
| |
| 1. LUCENE-438: Remove "final" from Token, implement Cloneable, allow |
| changing of termText via setTermText(). (Yonik Seeley) |
| |
| 2. org.apache.lucene.analysis.nl.WordlistLoader has been deprecated |
| and is supposed to be replaced with the WordlistLoader class in |
| package org.apache.lucene.analysis (Daniel Naber) |
| |
| 3. LUCENE-609: Revert return type of Document.getField(s) to Field |
| for backward compatibility, added new Document.getFieldable(s) |
| for access to new lazy loaded fields. (Yonik Seeley) |
| |
| 4. LUCENE-608: Document.fields() has been deprecated and a new method |
| Document.getFields() has been added that returns a List instead of |
| an Enumeration (Daniel Naber) |
| |
| 5. LUCENE-605: New Explanation.isMatch() method and new ComplexExplanation |
| subclass allows explain methods to produce Explanations which model |
| "matching" independent of having a positive value. |
| (Chris Hostetter) |
| |
| 6. LUCENE-621: New static methods IndexWriter.setDefaultWriteLockTimeout |
| and IndexWriter.setDefaultCommitLockTimeout for overriding default |
| timeout values for all future instances of IndexWriter (as well |
| as for any other classes that may reference the static values, |
| ie: IndexReader). |
| (Michael McCandless via Chris Hostetter) |
| |
| 7. LUCENE-638: FSDirectory.list() now only returns the directory's |
| Lucene-related files. Thanks to this change one can now construct |
| a RAMDirectory from a file system directory that contains files |
| not related to Lucene. |
| (Simon Willnauer via Daniel Naber) |
| |
| 8. LUCENE-635: Decoupling locking implementation from Directory |
| implementation. Added set/getLockFactory to Directory and moved |
| all locking code into subclasses of abstract class LockFactory. |
| FSDirectory and RAMDirectory still default to their prior locking |
| implementations, but now you can mix & match, for example using |
| SingleInstanceLockFactory (ie, in memory locking) locking with an |
| FSDirectory. Note that now you must call setDisableLocks before |
| the instantiation a FSDirectory if you wish to disable locking |
| for that Directory. |
| (Michael McCandless, Jeff Patterson via Yonik Seeley) |
| |
| 9. LUCENE-657: Made FuzzyQuery non-final and inner ScoreTerm protected. |
| (Steven Parkes via Otis Gospodnetic) |
| |
| 10. LUCENE-701: Lockless commits: a commit lock is no longer required |
| when a writer commits and a reader opens the index. This includes |
| a change to the index file format (see docs/fileformats.html for |
| details). It also removes all APIs associated with the commit |
| lock & its timeout. Readers are now truly read-only and do not |
| block one another on startup. This is the first step to getting |
| Lucene to work correctly over NFS (second step is |
| LUCENE-710). (Mike McCandless) |
| |
| 11. LUCENE-722: DEFAULT_MIN_DOC_FREQ was misspelled DEFALT_MIN_DOC_FREQ |
| in Similarity's MoreLikeThis class. The misspelling has been |
| replaced by the correct spelling. |
| (Andi Vajda via Daniel Naber) |
| |
| 12. LUCENE-738: Reduce the size of the file that keeps track of which |
| documents are deleted when the number of deleted documents is |
| small. This changes the index file format and cannot be |
| read by previous versions of Lucene. (Doron Cohen via Yonik Seeley) |
| |
| 13. LUCENE-756: Maintain all norms in a single .nrm file to reduce the |
| number of open files and file descriptors for the non-compound index |
| format. This changes the index file format, but maintains the |
| ability to read and update older indices. The first segment merge |
| on an older format index will create a single .nrm file for the new |
| segment. (Doron Cohen via Yonik Seeley) |
| |
| 14. LUCENE-732: DateTools support has been added to QueryParser, with |
| setters for both the default Resolution, and per-field Resolution. |
| For backwards compatibility, DateField is still used if no Resolutions |
| are specified. (Michael Busch via Chris Hostetter) |
| |
| 15. Added isOptimized() method to IndexReader. |
| (Otis Gospodnetic) |
| |
| 16. LUCENE-773: Deprecate the FSDirectory.getDirectory(*) methods that |
| take a boolean "create" argument. Instead you should use |
| IndexWriter's "create" argument to create a new index. |
| (Mike McCandless) |
| |
| 17. LUCENE-780: Add a static Directory.copy() method to copy files |
| from one Directory to another. (Jiri Kuhn via Mike McCandless) |
| |
| 18. LUCENE-773: Added Directory.clearLock(String name) to forcefully |
| remove an old lock. The default implementation is to ask the |
| lockFactory (if non null) to clear the lock. (Mike McCandless) |
| |
| 19. LUCENE-795: Directory.renameFile() has been deprecated as it is |
| not used anymore inside Lucene. (Daniel Naber) |
| |
| Bug fixes |
| |
| 1. Fixed the web application demo (built with "ant war-demo") which |
| didn't work because it used a QueryParser method that had |
| been removed (Daniel Naber) |
| |
| 2. LUCENE-583: ISOLatin1AccentFilter fails to preserve positionIncrement |
| (Yonik Seeley) |
| |
| 3. LUCENE-575: SpellChecker min score is incorrectly changed by suggestSimilar |
| (Karl Wettin via Yonik Seeley) |
| |
| 4. LUCENE-587: Explanation.toHtml was producing malformed HTML |
| (Chris Hostetter) |
| |
| 5. Fix to allow MatchAllDocsQuery to be used with RemoteSearcher (Yonik Seeley) |
| |
| 6. LUCENE-601: RAMDirectory and RAMFile made Serializable |
| (Karl Wettin via Otis Gospodnetic) |
| |
| 7. LUCENE-557: Fixes to BooleanQuery and FilteredQuery so that the score |
| Explanations match up with the real scores. |
| (Chris Hostetter) |
| |
| 8. LUCENE-607: ParallelReader's TermEnum fails to advance properly to |
| new fields (Chuck Williams, Christian Kohlschuetter via Yonik Seeley) |
| |
| 9. LUCENE-610,LUCENE-611: Simple syntax changes to allow compilation with ecj: |
| disambiguate inner class scorer's use of doc() in BooleanScorer2, |
| other test code changes. (DM Smith via Yonik Seeley) |
| |
| 10. LUCENE-451: All core query types now use ComplexExplanations so that |
| boosts of zero don't confuse the BooleanWeight explain method. |
| (Chris Hostetter) |
| |
| 11. LUCENE-593: Fixed LuceneDictionary's inner Iterator |
| (KĂĄre Fiedler Christiansen via Otis Gospodnetic) |
| |
| 12. LUCENE-641: fixed an off-by-one bug with IndexWriter.setMaxFieldLength() |
| (Daniel Naber) |
| |
| 13. LUCENE-659: Make PerFieldAnalyzerWrapper delegate getPositionIncrementGap() |
| to the correct analyzer for the field. (Chuck Williams via Yonik Seeley) |
| |
| 14. LUCENE-650: Fixed NPE in Locale specific String Sort when Document |
| has no value. |
| (Oliver Hutchison via Chris Hostetter) |
| |
| 15. LUCENE-683: Fixed data corruption when reading lazy loaded fields. |
| (Yonik Seeley) |
| |
| 16. LUCENE-678: Fixed bug in NativeFSLockFactory which caused the same |
| lock to be shared between different directories. |
| (Michael McCandless via Yonik Seeley) |
| |
| 17. LUCENE-690: Fixed thread unsafe use of IndexInput by lazy loaded fields. |
| (Yonik Seeley) |
| |
| 18. LUCENE-696: Fix bug when scorer for DisjunctionMaxQuery has skipTo() |
| called on it before next(). (Yonik Seeley) |
| |
| 19. LUCENE-569: Fixed SpanNearQuery bug, for 'inOrder' queries it would fail |
| to recognize ordered spans if they overlapped with unordered spans. |
| (Paul Elschot via Chris Hostetter) |
| |
| 20. LUCENE-706: Updated fileformats.xml|html concerning the docdelta value |
| in the frequency file. (Johan Stuyts, Doron Cohen via Grant Ingersoll) |
| |
| 21. LUCENE-715: Fixed private constructor in IndexWriter.java to |
| properly release the acquired write lock if there is an |
| IOException after acquiring the write lock but before finishing |
| instantiation. (Matthew Bogosian via Mike McCandless) |
| |
| 22. LUCENE-651: Multiple different threads requesting the same |
| FieldCache entry (often for Sorting by a field) at the same |
| time caused multiple generations of that entry, which was |
| detrimental to performance and memory use. |
| (Oliver Hutchison via Otis Gospodnetic) |
| |
| 23. LUCENE-717: Fixed build.xml not to fail when there is no lib dir. |
| (Doron Cohen via Otis Gospodnetic) |
| |
| 24. LUCENE-728: Removed duplicate/old MoreLikeThis and SimilarityQueries |
| classes from contrib/similarity, as their new home is under |
| contrib/queries. |
| (Otis Gospodnetic) |
| |
| 25. LUCENE-669: Do not double-close the RandomAccessFile in |
| FSIndexInput/Output during finalize(). Besides sending an |
| IOException up to the GC, this may also be the cause intermittent |
| "The handle is invalid" IOExceptions on Windows when trying to |
| close readers or writers. (Michael Busch via Mike McCandless) |
| |
| 26. LUCENE-702: Fix IndexWriter.addIndexes(*) to not corrupt the index |
| on any exceptions (eg disk full). The semantics of these methods |
| is now transactional: either all indices are merged or none are. |
| Also fixed IndexWriter.mergeSegments (called outside of |
| addIndexes(*) by addDocument, optimize, flushRamSegments) and |
| IndexReader.commit() (called by close) to clean up and keep the |
| instance state consistent to what's actually in the index (Mike |
| McCandless). |
| |
| 27. LUCENE-129: Change finalizers to do "try {...} finally |
| {super.finalize();}" to make sure we don't miss finalizers in |
| classes above us. (Esmond Pitt via Mike McCandless) |
| |
| 28. LUCENE-754: Fix a problem introduced by LUCENE-651, causing |
| IndexReaders to hang around forever, in addition to not |
| fixing the original FieldCache performance problem. |
| (Chris Hostetter, Yonik Seeley) |
| |
| 29. LUCENE-140: Fix IndexReader.deleteDocument(int docNum) to |
| correctly raise ArrayIndexOutOfBoundsException when docNum is too |
| large. Previously, if docNum was only slightly too large (within |
| the same multiple of 8, ie, up to 7 ints beyond maxDoc), no |
| exception would be raised and instead the index would become |
| silently corrupted. The corruption then only appears much later, |
| in mergeSegments, when the corrupted segment is merged with |
| segment(s) after it. (Mike McCandless) |
| |
| 30. LUCENE-768: Fix case where an Exception during deleteDocument, |
| undeleteAll or setNorm in IndexReader could leave the reader in a |
| state where close() fails to release the write lock. |
| (Mike McCandless) |
| |
| 31. Remove "tvp" from known index file extensions because it is |
| never used. (Nicolas Lalevée via Bernhard Messer) |
| |
| 32. LUCENE-767: Change how SegmentReader.maxDoc() is computed to not |
| rely on file length check and instead use the SegmentInfo's |
| docCount that's already stored explicitly in the index. This is a |
| defensive bug fix (ie, there is no known problem seen "in real |
| life" due to this, just a possible future problem). (Chuck |
| Williams via Mike McCandless) |
| |
| Optimizations |
| |
| 1. LUCENE-586: TermDocs.skipTo() is now more efficient for |
| multi-segment indexes. This will improve the performance of many |
| types of queries against a non-optimized index. (Andrew Hudson |
| via Yonik Seeley) |
| |
| 2. LUCENE-623: RAMDirectory.close now nulls out its reference to all |
| internal "files", allowing them to be GCed even if references to the |
| RAMDirectory itself still exist. (Nadav Har'El via Chris Hostetter) |
| |
| 3. LUCENE-629: Compressed fields are no longer uncompressed and |
| recompressed during segment merges (e.g. during indexing or |
| optimizing), thus improving performance . (Michael Busch via Otis |
| Gospodnetic) |
| |
| 4. LUCENE-388: Improve indexing performance when maxBufferedDocs is |
| large by keeping a count of buffered documents rather than |
| counting after each document addition. (Doron Cohen, Paul Smith, |
| Yonik Seeley) |
| |
| 5. Modified TermScorer.explain to use TermDocs.skipTo() instead of |
| looping through docs. (Grant Ingersoll) |
| |
| 6. LUCENE-672: New indexing segment merge policy flushes all |
| buffered docs to their own segment and delays a merge until |
| mergeFactor segments of a certain level have been accumulated. |
| This increases indexing performance in the presence of deleted |
| docs or partially full segments as well as enabling future |
| optimizations. |
| |
| NOTE: this also fixes an "under-merging" bug whereby it is |
| possible to get far too many segments in your index (which will |
| drastically slow down search, risks exhausting file descriptor |
| limit, etc.). This can happen when the number of buffered docs |
| at close, plus the number of docs in the last non-ram segment is |
| greater than mergeFactor. (Ning Li, Yonik Seeley) |
| |
| 7. Lazy loaded fields unnecessarily retained an extra copy of loaded |
| String data. (Yonik Seeley) |
| |
| 8. LUCENE-443: ConjunctionScorer performance increase. Speed up |
| any BooleanQuery with more than one mandatory clause. |
| (Abdul Chaudhry, Paul Elschot via Yonik Seeley) |
| |
| 9. LUCENE-365: DisjunctionSumScorer performance increase of |
| ~30%. Speeds up queries with optional clauses. (Paul Elschot via |
| Yonik Seeley) |
| |
| 10. LUCENE-695: Optimized BufferedIndexInput.readBytes() for medium |
| size buffers, which will speed up merging and retrieving binary |
| and compressed fields. (Nadav Har'El via Yonik Seeley) |
| |
| 11. LUCENE-687: Lazy skipping on proximity file speeds up most |
| queries involving term positions, including phrase queries. |
| (Michael Busch via Yonik Seeley) |
| |
| 12. LUCENE-714: Replaced 2 cases of manual for-loop array copying |
| with calls to System.arraycopy instead, in DocumentWriter.java. |
| (Nicolas Lalevee via Mike McCandless) |
| |
| 13. LUCENE-729: Non-recursive skipTo and next implementation of |
| TermDocs for a MultiReader. The old implementation could |
| recurse up to the number of segments in the index. (Yonik Seeley) |
| |
| 14. LUCENE-739: Improve segment merging performance by reusing |
| the norm array across different fields and doing bulk writes |
| of norms of segments with no deleted docs. |
| (Michael Busch via Yonik Seeley) |
| |
| 15. LUCENE-745: Add BooleanQuery.clauses(), allowing direct access |
| to the List of clauses and replaced the internal synchronized Vector |
| with an unsynchronized List. (Yonik Seeley) |
| |
| 16. LUCENE-750: Remove finalizers from FSIndexOutput and move the |
| FSIndexInput finalizer to the actual file so all clones don't |
| register a new finalizer. (Yonik Seeley) |
| |
| Test Cases |
| |
| 1. Added TestTermScorer.java (Grant Ingersoll) |
| |
| 2. Added TestWindowsMMap.java (Benson Margulies via Mike McCandless) |
| |
| 3. LUCENE-744 Append the user.name property onto the temporary directory |
| that is created so it doesn't interfere with other users. (Grant Ingersoll) |
| |
| Documentation |
| |
| 1. Added style sheet to xdocs named lucene.css and included in the |
| Anakia VSL descriptor. (Grant Ingersoll) |
| |
| 2. Added scoring.xml document into xdocs. Updated Similarity.java |
| scoring formula.(Grant Ingersoll and Steve Rowe. Updates from: |
| Michael McCandless, Doron Cohen, Chris Hostetter, Doug Cutting). |
| Issue 664. |
| |
| 3. Added javadocs for FieldSelectorResult.java. (Grant Ingersoll) |
| |
| 4. Moved xdocs directory to src/site/src/documentation/content/xdocs per |
| Issue 707. Site now builds using Forrest, just like the other Lucene |
| siblings. See http://wiki.apache.org/jakarta-lucene/HowToUpdateTheWebsite |
| for info on updating the website. (Grant Ingersoll with help from Steve Rowe, |
| Chris Hostetter, Doug Cutting, Otis Gospodnetic, Yonik Seeley) |
| |
| 5. Added in Developer and System Requirements sections under Resources (Grant Ingersoll) |
| |
| 6. LUCENE-713 Updated the Term Vector section of File Formats to include |
| documentation on how Offset and Position info are stored in the TVF file. |
| (Grant Ingersoll, Samir Abdou) |
| |
| 7. Added in link to Clover Test Code Coverage Reports under the Develop |
| section in Resources (Grant Ingersoll) |
| |
| 8. LUCENE-748: Added details for semantics of IndexWriter.close on |
| hitting an Exception. (Jed Wesley-Smith via Mike McCandless) |
| |
| 9. Added some text about what is contained in releases. |
| (Eric Haszlakiewicz via Grant Ingersoll) |
| |
| 10. LUCENE-758: Fix javadoc to clarify that RAMDirectory(Directory) |
| makes a full copy of the starting Directory. (Mike McCandless) |
| |
| 11. LUCENE-764: Fix javadocs to detail temporary space requirements |
| for IndexWriter's optimize(), addIndexes(*) and addDocument(...) |
| methods. (Mike McCandless) |
| |
| Build |
| |
| 1. Added in clover test code coverage per http://issues.apache.org/jira/browse/LUCENE-721 |
| To enable clover code coverage, you must have clover.jar in the ANT |
| classpath and specify -Drun.clover=true on the command line. |
| (Michael Busch and Grant Ingersoll) |
| |
| 2. Added a sysproperty in common-build.xml per Lucene 752 to map java.io.tmpdir to |
| ${build.dir}/test just like the tempDir sysproperty. |
| |
| 3. LUCENE-757 Added new target named init-dist that does setup for |
| distribution of both binary and source distributions. Called by package |
| and package-*-src |
| |
| ======================= Release 2.0.0 ======================= |
| |
| API Changes |
| |
| 1. All deprecated methods and fields have been removed, except |
| DateField, which will still be supported for some time |
| so Lucene can read its date fields from old indexes |
| (Yonik Seeley & Grant Ingersoll) |
| |
| 2. DisjunctionSumScorer is no longer public. |
| (Paul Elschot via Otis Gospodnetic) |
| |
| 3. Creating a Field with both an empty name and an empty value |
| now throws an IllegalArgumentException |
| (Daniel Naber) |
| |
| 4. LUCENE-301: Added new IndexWriter({String,File,Directory}, |
| Analyzer) constructors that do not take a boolean "create" |
| argument. These new constructors will create a new index if |
| necessary, else append to the existing one. (Dan Armbrust via |
| Mike McCandless) |
| |
| New features |
| |
| 1. LUCENE-496: Command line tool for modifying the field norms of an |
| existing index; added to contrib/miscellaneous. (Chris Hostetter) |
| |
| 2. LUCENE-577: SweetSpotSimilarity added to contrib/miscellaneous. |
| (Chris Hostetter) |
| |
| Bug fixes |
| |
| 1. LUCENE-330: Fix issue of FilteredQuery not working properly within |
| BooleanQuery. (Paul Elschot via Erik Hatcher) |
| |
| 2. LUCENE-515: Make ConstantScoreRangeQuery and ConstantScoreQuery work |
| with RemoteSearchable. (Philippe Laflamme via Yonik Seeley) |
| |
| 3. Added methods to get/set writeLockTimeout and commitLockTimeout in |
| IndexWriter. These could be set in Lucene 1.4 using a system property. |
| This feature had been removed without adding the corresponding |
| getter/setter methods. (Daniel Naber) |
| |
| 4. LUCENE-413: Fixed ArrayIndexOutOfBoundsException exceptions |
| when using SpanQueries. (Paul Elschot via Yonik Seeley) |
| |
| 5. Implemented FilterIndexReader.getVersion() and isCurrent() |
| (Yonik Seeley) |
| |
| 6. LUCENE-540: Fixed a bug with IndexWriter.addIndexes(Directory[]) |
| that sometimes caused the index order of documents to change. |
| (Yonik Seeley) |
| |
| 7. LUCENE-526: Fixed a bug in FieldSortedHitQueue that caused |
| subsequent String sorts with different locales to sort identically. |
| (Paul Cowan via Yonik Seeley) |
| |
| 8. LUCENE-541: Add missing extractTerms() to DisjunctionMaxQuery |
| (Stefan Will via Yonik Seeley) |
| |
| 9. LUCENE-514: Added getTermArrays() and extractTerms() to |
| MultiPhraseQuery (Eric Jain & Yonik Seeley) |
| |
| 10. LUCENE-512: Fixed ClassCastException in ParallelReader.getTermFreqVectors |
| (frederic via Yonik) |
| |
| 11. LUCENE-352: Fixed bug in SpanNotQuery that manifested as |
| NullPointerException when "exclude" query was not a SpanTermQuery. |
| (Chris Hostetter) |
| |
| 12. LUCENE-572: Fixed bug in SpanNotQuery hashCode, was ignoring exclude clause |
| (Chris Hostetter) |
| |
| 13. LUCENE-561: Fixed some ParallelReader bugs. NullPointerException if the reader |
| didn't know about the field yet, reader didn't keep track if it had deletions, |
| and deleteDocument calls could circumvent synchronization on the subreaders. |
| (Chuck Williams via Yonik Seeley) |
| |
| 14. LUCENE-556: Added empty extractTerms() implementation to MatchAllDocsQuery and |
| ConstantScoreQuery in order to allow their use with a MultiSearcher. |
| (Yonik Seeley) |
| |
| 15. LUCENE-546: Removed 2GB file size limitations for RAMDirectory. |
| (Peter Royal, Michael Chan, Yonik Seeley) |
| |
| 16. LUCENE-485: Don't hold commit lock while removing obsolete index |
| files. (Luc Vanlerberghe via cutting) |
| |
| |
| 1.9.1 |
| |
| Bug fixes |
| |
| 1. LUCENE-511: Fix a bug in the BufferedIndexOutput optimization |
| introduced in 1.9-final. (Shay Banon & Steven Tamm via cutting) |
| |
| 1.9 final |
| |
| Note that this release is mostly but not 100% source compatible with |
| the previous release of Lucene (1.4.3). In other words, you should |
| make sure your application compiles with this version of Lucene before |
| you replace the old Lucene JAR with the new one. Many methods have |
| been deprecated in anticipation of release 2.0, so deprecation |
| warnings are to be expected when upgrading from 1.4.3 to 1.9. |
| |
| Bug fixes |
| |
| 1. The fix that made IndexWriter.setMaxBufferedDocs(1) work had negative |
| effects on indexing performance and has thus been reverted. The |
| argument for setMaxBufferedDocs(int) must now at least be 2, otherwise |
| an exception is thrown. (Daniel Naber) |
| |
| Optimizations |
| |
| 1. Optimized BufferedIndexOutput.writeBytes() to use |
| System.arraycopy() in more cases, rather than copying byte-by-byte. |
| (Lukas Zapletal via Cutting) |
| |
| 1.9 RC1 |
| |
| Requirements |
| |
| 1. To compile and use Lucene you now need Java 1.4 or later. |
| |
| Changes in runtime behavior |
| |
| 1. FuzzyQuery can no longer throw a TooManyClauses exception. If a |
| FuzzyQuery expands to more than BooleanQuery.maxClauseCount |
| terms only the BooleanQuery.maxClauseCount most similar terms |
| go into the rewritten query and thus the exception is avoided. |
| (Christoph) |
| |
| 2. Changed system property from "org.apache.lucene.lockdir" to |
| "org.apache.lucene.lockDir", so that its casing follows the existing |
| pattern used in other Lucene system properties. (Bernhard) |
| |
| 3. The terms of RangeQueries and FuzzyQueries are now converted to |
| lowercase by default (as it has been the case for PrefixQueries |
| and WildcardQueries before). Use setLowercaseExpandedTerms(false) |
| to disable that behavior but note that this also affects |
| PrefixQueries and WildcardQueries. (Daniel Naber) |
| |
| 4. Document frequency that is computed when MultiSearcher is used is now |
| computed correctly and "globally" across subsearchers and indices, while |
| before it used to be computed locally to each index, which caused |
| ranking across multiple indices not to be equivalent. |
| (Chuck Williams, Wolf Siberski via Otis, bug #31841) |
| |
| 5. When opening an IndexWriter with create=true, Lucene now only deletes |
| its own files from the index directory (looking at the file name suffixes |
| to decide if a file belongs to Lucene). The old behavior was to delete |
| all files. (Daniel Naber and Bernhard Messer, bug #34695) |
| |
| 6. The version of an IndexReader, as returned by getCurrentVersion() |
| and getVersion() doesn't start at 0 anymore for new indexes. Instead, it |
| is now initialized by the system time in milliseconds. |
| (Bernhard Messer via Daniel Naber) |
| |
| 7. Several default values cannot be set via system properties anymore, as |
| this has been considered inappropriate for a library like Lucene. For |
| most properties there are set/get methods available in IndexWriter which |
| you should use instead. This affects the following properties: |
| See IndexWriter for getter/setter methods: |
| org.apache.lucene.writeLockTimeout, org.apache.lucene.commitLockTimeout, |
| org.apache.lucene.minMergeDocs, org.apache.lucene.maxMergeDocs, |
| org.apache.lucene.maxFieldLength, org.apache.lucene.termIndexInterval, |
| org.apache.lucene.mergeFactor, |
| See BooleanQuery for getter/setter methods: |
| org.apache.lucene.maxClauseCount |
| See FSDirectory for getter/setter methods: |
| disableLuceneLocks |
| (Daniel Naber) |
| |
| 8. Fixed FieldCacheImpl to use user-provided IntParser and FloatParser, |
| instead of using Integer and Float classes for parsing. |
| (Yonik Seeley via Otis Gospodnetic) |
| |
| 9. Expert level search routines returning TopDocs and TopFieldDocs |
| no longer normalize scores. This also fixes bugs related to |
| MultiSearchers and score sorting/normalization. |
| (Luc Vanlerberghe via Yonik Seeley, LUCENE-469) |
| |
| New features |
| |
| 1. Added support for stored compressed fields (patch #31149) |
| (Bernhard Messer via Christoph) |
| |
| 2. Added support for binary stored fields (patch #29370) |
| (Drew Farris and Bernhard Messer via Christoph) |
| |
| 3. Added support for position and offset information in term vectors |
| (patch #18927). (Grant Ingersoll & Christoph) |
| |
| 4. A new class DateTools has been added. It allows you to format dates |
| in a readable format adequate for indexing. Unlike the existing |
| DateField class DateTools can cope with dates before 1970 and it |
| forces you to specify the desired date resolution (e.g. month, day, |
| second, ...) which can make RangeQuerys on those fields more efficient. |
| (Daniel Naber) |
| |
| 5. QueryParser now correctly works with Analyzers that can return more |
| than one token per position. For example, a query "+fast +car" |
| would be parsed as "+fast +(car automobile)" if the Analyzer |
| returns "car" and "automobile" at the same position whenever it |
| finds "car" (Patch #23307). |
| (Pierrick Brihaye, Daniel Naber) |
| |
| 6. Permit unbuffered Directory implementations (e.g., using mmap). |
| InputStream is replaced by the new classes IndexInput and |
| BufferedIndexInput. OutputStream is replaced by the new classes |
| IndexOutput and BufferedIndexOutput. InputStream and OutputStream |
| are now deprecated and FSDirectory is now subclassable. (cutting) |
| |
| 7. Add native Directory and TermDocs implementations that work under |
| GCJ. These require GCC 3.4.0 or later and have only been tested |
| on Linux. Use 'ant gcj' to build demo applications. (cutting) |
| |
| 8. Add MMapDirectory, which uses nio to mmap input files. This is |
| still somewhat slower than FSDirectory. However it uses less |
| memory per query term, since a new buffer is not allocated per |
| term, which may help applications which use, e.g., wildcard |
| queries. It may also someday be faster. (cutting & Paul Elschot) |
| |
| 9. Added javadocs-internal to build.xml - bug #30360 |
| (Paul Elschot via Otis) |
| |
| 10. Added RangeFilter, a more generically useful filter than DateFilter. |
| (Chris M Hostetter via Erik) |
| |
| 11. Added NumberTools, a utility class indexing numeric fields. |
| (adapted from code contributed by Matt Quail; committed by Erik) |
| |
| 12. Added public static IndexReader.main(String[] args) method. |
| IndexReader can now be used directly at command line level |
| to list and optionally extract the individual files from an existing |
| compound index file. |
| (adapted from code contributed by Garrett Rooney; committed by Bernhard) |
| |
| 13. Add IndexWriter.setTermIndexInterval() method. See javadocs. |
| (Doug Cutting) |
| |
| 14. Added LucenePackage, whose static get() method returns java.util.Package, |
| which lets the caller get the Lucene version information specified in |
| the Lucene Jar. |
| (Doug Cutting via Otis) |
| |
| 15. Added Hits.iterator() method and corresponding HitIterator and Hit objects. |
| This provides standard java.util.Iterator iteration over Hits. |
| Each call to the iterator's next() method returns a Hit object. |
| (Jeremy Rayner via Erik) |
| |
| 16. Add ParallelReader, an IndexReader that combines separate indexes |
| over different fields into a single virtual index. (Doug Cutting) |
| |
| 17. Add IntParser and FloatParser interfaces to FieldCache, so that |
| fields in arbitrarily formats can be cached as ints and floats. |
| (Doug Cutting) |
| |
| 18. Added class org.apache.lucene.index.IndexModifier which combines |
| IndexWriter and IndexReader, so you can add and delete documents without |
| worrying about synchronization/locking issues. |
| (Daniel Naber) |
| |
| 19. Lucene can now be used inside an unsigned applet, as Lucene's access |
| to system properties will not cause a SecurityException anymore. |
| (Jon Schuster via Daniel Naber, bug #34359) |
| |
| 20. Added a new class MatchAllDocsQuery that matches all documents. |
| (John Wang via Daniel Naber, bug #34946) |
| |
| 21. Added ability to omit norms on a per field basis to decrease |
| index size and memory consumption when there are many indexed fields. |
| See Field.setOmitNorms() |
| (Yonik Seeley, LUCENE-448) |
| |
| 22. Added NullFragmenter to contrib/highlighter, which is useful for |
| highlighting entire documents or fields. |
| (Erik Hatcher) |
| |
| 23. Added regular expression queries, RegexQuery and SpanRegexQuery. |
| Note the same term enumeration caveats apply with these queries as |
| apply to WildcardQuery and other term expanding queries. |
| These two new queries are not currently supported via QueryParser. |
| (Erik Hatcher) |
| |
| 24. Added ConstantScoreQuery which wraps a filter and produces a score |
| equal to the query boost for every matching document. |
| (Yonik Seeley, LUCENE-383) |
| |
| 25. Added ConstantScoreRangeQuery which produces a constant score for |
| every document in the range. One advantage over a normal RangeQuery |
| is that it doesn't expand to a BooleanQuery and thus doesn't have a maximum |
| number of terms the range can cover. Both endpoints may also be open. |
| (Yonik Seeley, LUCENE-383) |
| |
| 26. Added ability to specify a minimum number of optional clauses that |
| must match in a BooleanQuery. See BooleanQuery.setMinimumNumberShouldMatch(). |
| (Paul Elschot, Chris Hostetter via Yonik Seeley, LUCENE-395) |
| |
| 27. Added DisjunctionMaxQuery which provides the maximum score across its clauses. |
| It's very useful for searching across multiple fields. |
| (Chuck Williams via Yonik Seeley, LUCENE-323) |
| |
| 28. New class ISOLatin1AccentFilter that replaces accented characters in the ISO |
| Latin 1 character set by their unaccented equivalent. |
| (Sven Duzont via Erik Hatcher) |
| |
| 29. New class KeywordAnalyzer. "Tokenizes" the entire stream as a single token. |
| This is useful for data like zip codes, ids, and some product names. |
| (Erik Hatcher) |
| |
| 30. Copied LengthFilter from contrib area to core. Removes words that are too |
| long and too short from the stream. |
| (David Spencer via Otis and Daniel) |
| |
| 31. Added getPositionIncrementGap(String fieldName) to Analyzer. This allows |
| custom analyzers to put gaps between Field instances with the same field |
| name, preventing phrase or span queries crossing these boundaries. The |
| default implementation issues a gap of 0, allowing the default token |
| position increment of 1 to put the next field's first token into a |
| successive position. |
| (Erik Hatcher, with advice from Yonik) |
| |
| 32. StopFilter can now ignore case when checking for stop words. |
| (Grant Ingersoll via Yonik, LUCENE-248) |
| |
| 33. Add TopDocCollector and TopFieldDocCollector. These simplify the |
| implementation of hit collectors that collect only the |
| top-scoring or top-sorting hits. |
| |
| API Changes |
| |
| 1. Several methods and fields have been deprecated. The API documentation |
| contains information about the recommended replacements. It is planned |
| that most of the deprecated methods and fields will be removed in |
| Lucene 2.0. (Daniel Naber) |
| |
| 2. The Russian and the German analyzers have been moved to contrib/analyzers. |
| Also, the WordlistLoader class has been moved one level up in the |
| hierarchy and is now org.apache.lucene.analysis.WordlistLoader |
| (Daniel Naber) |
| |
| 3. The API contained methods that declared to throw an IOException |
| but that never did this. These declarations have been removed. If |
| your code tries to catch these exceptions you might need to remove |
| those catch clauses to avoid compile errors. (Daniel Naber) |
| |
| 4. Add a serializable Parameter Class to standardize parameter enum |
| classes in BooleanClause and Field. (Christoph) |
| |
| 5. Added rewrite methods to all SpanQuery subclasses that nest other SpanQuerys. |
| This allows custom SpanQuery subclasses that rewrite (for term expansion, for |
| example) to nest within the built-in SpanQuery classes successfully. |
| |
| Bug fixes |
| |
| 1. The JSP demo page (src/jsp/results.jsp) now properly closes the |
| IndexSearcher it opens. (Daniel Naber) |
| |
| 2. Fixed a bug in IndexWriter.addIndexes(IndexReader[] readers) that |
| prevented deletion of obsolete segments. (Christoph Goller) |
| |
| 3. Fix in FieldInfos to avoid the return of an extra blank field in |
| IndexReader.getFieldNames() (Patch #19058). (Mark Harwood via Bernhard) |
| |
| 4. Some combinations of BooleanQuery and MultiPhraseQuery (formerly |
| PhrasePrefixQuery) could provoke UnsupportedOperationException |
| (bug #33161). (Rhett Sutphin via Daniel Naber) |
| |
| 5. Small bug in skipTo of ConjunctionScorer that caused NullPointerException |
| if skipTo() was called without prior call to next() fixed. (Christoph) |
| |
| 6. Disable Similiarty.coord() in the scoring of most automatically |
| generated boolean queries. The coord() score factor is |
| appropriate when clauses are independently specified by a user, |
| but is usually not appropriate when clauses are generated |
| automatically, e.g., by a fuzzy, wildcard or range query. Matches |
| on such automatically generated queries are no longer penalized |
| for not matching all terms. (Doug Cutting, Patch #33472) |
| |
| 7. Getting a lock file with Lock.obtain(long) was supposed to wait for |
| a given amount of milliseconds, but this didn't work. |
| (John Wang via Daniel Naber, Bug #33799) |
| |
| 8. Fix FSDirectory.createOutput() to always create new files. |
| Previously, existing files were overwritten, and an index could be |
| corrupted when the old version of a file was longer than the new. |
| Now any existing file is first removed. (Doug Cutting) |
| |
| 9. Fix BooleanQuery containing nested SpanTermQuery's, which previously |
| could return an incorrect number of hits. |
| (Reece Wilton via Erik Hatcher, Bug #35157) |
| |
| 10. Fix NullPointerException that could occur with a MultiPhraseQuery |
| inside a BooleanQuery. |
| (Hans Hjelm and Scotty Allen via Daniel Naber, Bug #35626) |
| |
| 11. Fixed SnowballFilter to pass through the position increment from |
| the original token. |
| (Yonik Seeley via Erik Hatcher, LUCENE-437) |
| |
| 12. Added Unicode range of Korean characters to StandardTokenizer, |
| grouping contiguous characters into a token rather than one token |
| per character. This change also changes the token type to "<CJ>" |
| for Chinese and Japanese character tokens (previously it was "<CJK>"). |
| (Cheolgoo Kang via Otis and Erik, LUCENE-444 and LUCENE-461) |
| |
| 13. FieldsReader now looks at FieldInfo.storeOffsetWithTermVector and |
| FieldInfo.storePositionWithTermVector and creates the Field with |
| correct TermVector parameter. |
| (Frank Steinmann via Bernhard, LUCENE-455) |
| |
| 14. Fixed WildcardQuery to prevent "cat" matching "ca??". |
| (Xiaozheng Ma via Bernhard, LUCENE-306) |
| |
| 15. Fixed a bug where MultiSearcher and ParallelMultiSearcher could |
| change the sort order when sorting by string for documents without |
| a value for the sort field. |
| (Luc Vanlerberghe via Yonik, LUCENE-453) |
| |
| 16. Fixed a sorting problem with MultiSearchers that can lead to |
| missing or duplicate docs due to equal docs sorting in an arbitrary order. |
| (Yonik Seeley, LUCENE-456) |
| |
| 17. A single hit using the expert level sorted search methods |
| resulted in the score not being normalized. |
| (Yonik Seeley, LUCENE-462) |
| |
| 18. Fixed inefficient memory usage when loading an index into RAMDirectory. |
| (Volodymyr Bychkoviak via Bernhard, LUCENE-475) |
| |
| 19. Corrected term offsets returned by ChineseTokenizer. |
| (Ray Tsang via Erik Hatcher, LUCENE-324) |
| |
| 20. Fixed MultiReader.undeleteAll() to correctly update numDocs. |
| (Robert Kirchgessner via Doug Cutting, LUCENE-479) |
| |
| 21. Race condition in IndexReader.getCurrentVersion() and isCurrent() |
| fixed by acquiring the commit lock. |
| (Luc Vanlerberghe via Yonik Seeley, LUCENE-481) |
| |
| 22. IndexWriter.setMaxBufferedDocs(1) didn't have the expected effect, |
| this has now been fixed. (Daniel Naber) |
| |
| 23. Fixed QueryParser when called with a date in local form like |
| "[1/16/2000 TO 1/18/2000]". This query did not include the documents |
| of 1/18/2000, i.e. the last day was not included. (Daniel Naber) |
| |
| 24. Removed sorting constraint that threw an exception if there were |
| not yet any values for the sort field (Yonik Seeley, LUCENE-374) |
| |
| Optimizations |
| |
| 1. Disk usage (peak requirements during indexing and optimization) |
| in case of compound file format has been improved. |
| (Bernhard, Dmitry, and Christoph) |
| |
| 2. Optimize the performance of certain uses of BooleanScorer, |
| TermScorer and IndexSearcher. In particular, a BooleanQuery |
| composed of TermQuery, with not all terms required, that returns a |
| TopDocs (e.g., through a Hits with no Sort specified) runs much |
| faster. (cutting) |
| |
| 3. Removed synchronization from reading of term vectors with an |
| IndexReader (Patch #30736). (Bernhard Messer via Christoph) |
| |
| 4. Optimize term-dictionary lookup to allocate far fewer terms when |
| scanning for the matching term. This speeds searches involving |
| low-frequency terms, where the cost of dictionary lookup can be |
| significant. (cutting) |
| |
| 5. Optimize fuzzy queries so the standard fuzzy queries with a prefix |
| of 0 now run 20-50% faster (Patch #31882). |
| (Jonathan Hager via Daniel Naber) |
| |
| 6. A Version of BooleanScorer (BooleanScorer2) added that delivers |
| documents in increasing order and implements skipTo. For queries |
| with required or forbidden clauses it may be faster than the old |
| BooleanScorer, for BooleanQueries consisting only of optional |
| clauses it is probably slower. The new BooleanScorer is now the |
| default. (Patch 31785 by Paul Elschot via Christoph) |
| |
| 7. Use uncached access to norms when merging to reduce RAM usage. |
| (Bug #32847). (Doug Cutting) |
| |
| 8. Don't read term index when random-access is not required. This |
| reduces time to open IndexReaders and they use less memory when |
| random access is not required, e.g., when merging segments. The |
| term index is now read into memory lazily at the first |
| random-access. (Doug Cutting) |
| |
| 9. Optimize IndexWriter.addIndexes(Directory[]) when the number of |
| added indexes is larger than mergeFactor. Previously this could |
| result in quadratic performance. Now performance is n log(n). |
| (Doug Cutting) |
| |
| 10. Speed up the creation of TermEnum for indices with multiple |
| segments and deleted documents, and thus speed up PrefixQuery, |
| RangeQuery, WildcardQuery, FuzzyQuery, RangeFilter, DateFilter, |
| and sorting the first time on a field. |
| (Yonik Seeley, LUCENE-454) |
| |
| 11. Optimized and generalized 32 bit floating point to byte |
| (custom 8 bit floating point) conversions. Increased the speed of |
| Similarity.encodeNorm() anywhere from 10% to 250%, depending on the JVM. |
| (Yonik Seeley, LUCENE-467) |
| |
| Infrastructure |
| |
| 1. Lucene's source code repository has converted from CVS to |
| Subversion. The new repository is at |
| http://svn.apache.org/repos/asf/lucene/java/trunk |
| |
| 2. Lucene's issue tracker has migrated from Bugzilla to JIRA. |
| Lucene's JIRA is at http://issues.apache.org/jira/browse/LUCENE |
| The old issues are still available at |
| http://issues.apache.org/bugzilla/show_bug.cgi?id=xxxx |
| (use the bug number instead of xxxx) |
| |
| |
| 1.4.3 |
| |
| 1. The JSP demo page (src/jsp/results.jsp) now properly escapes error |
| messages which might contain user input (e.g. error messages about |
| query parsing). If you used that page as a starting point for your |
| own code please make sure your code also properly escapes HTML |
| characters from user input in order to avoid so-called cross site |
| scripting attacks. (Daniel Naber) |
| |
| 2. QueryParser changes in 1.4.2 broke the QueryParser API. Now the old |
| API is supported again. (Christoph) |
| |
| |
| 1.4.2 |
| |
| 1. Fixed bug #31241: Sorting could lead to incorrect results (documents |
| missing, others duplicated) if the sort keys were not unique and there |
| were more than 100 matches. (Daniel Naber) |
| |
| 2. Memory leak in Sort code (bug #31240) eliminated. |
| (Rafal Krzewski via Christoph and Daniel) |
| |
| 3. FuzzyQuery now takes an additional parameter that specifies the |
| minimum similarity that is required for a term to match the query. |
| The QueryParser syntax for this is term~x, where x is a floating |
| point number >= 0 and < 1 (a bigger number means that a higher |
| similarity is required). Furthermore, a prefix can be specified |
| for FuzzyQuerys so that only those terms are considered similar that |
| start with this prefix. This can speed up FuzzyQuery greatly. |
| (Daniel Naber, Christoph Goller) |
| |
| 4. PhraseQuery and PhrasePrefixQuery now allow the explicit specification |
| of relative positions. (Christoph Goller) |
| |
| 5. QueryParser changes: Fix for ArrayIndexOutOfBoundsExceptions |
| (patch #9110); some unused method parameters removed; The ability |
| to specify a minimum similarity for FuzzyQuery has been added. |
| (Christoph Goller) |
| |
| 6. IndexSearcher optimization: a new ScoreDoc is no longer allocated |
| for every non-zero-scoring hit. This makes 'OR' queries that |
| contain common terms substantially faster. (cutting) |
| |
| |
| 1.4.1 |
| |
| 1. Fixed a performance bug in hit sorting code, where values were not |
| correctly cached. (Aviran via cutting) |
| |
| 2. Fixed errors in file format documentation. (Daniel Naber) |
| |
| |
| 1.4 final |
| |
| 1. Added "an" to the list of stop words in StopAnalyzer, to complement |
| the existing "a" there. Fix for bug 28960 |
| (http://issues.apache.org/bugzilla/show_bug.cgi?id=28960). (Otis) |
| |
| 2. Added new class FieldCache to manage in-memory caches of field term |
| values. (Tim Jones) |
| |
| 3. Added overloaded getFieldQuery method to QueryParser which |
| accepts the slop factor specified for the phrase (or the default |
| phrase slop for the QueryParser instance). This allows overriding |
| methods to replace a PhraseQuery with a SpanNearQuery instead, |
| keeping the proper slop factor. (Erik Hatcher) |
| |
| 4. Changed the encoding of GermanAnalyzer.java and GermanStemmer.java to |
| UTF-8 and changed the build encoding to UTF-8, to make changed files |
| compile. (Otis Gospodnetic) |
| |
| 5. Removed synchronization from term lookup under IndexReader methods |
| termFreq(), termDocs() or termPositions() to improve |
| multi-threaded performance. (cutting) |
| |
| 6. Fix a bug where obsolete segment files were not deleted on Win32. |
| |
| |
| 1.4 RC3 |
| |
| 1. Fixed several search bugs introduced by the skipTo() changes in |
| release 1.4RC1. The index file format was changed a bit, so |
| collections must be re-indexed to take advantage of the skipTo() |
| optimizations. (Christoph Goller) |
| |
| 2. Added new Document methods, removeField() and removeFields(). |
| (Christoph Goller) |
| |
| 3. Fixed inconsistencies with index closing. Indexes and directories |
| are now only closed automatically by Lucene when Lucene opened |
| them automatically. (Christoph Goller) |
| |
| 4. Added new class: FilteredQuery. (Tim Jones) |
| |
| 5. Added a new SortField type for custom comparators. (Tim Jones) |
| |
| 6. Lock obtain timed out message now displays the full path to the lock |
| file. (Daniel Naber via Erik) |
| |
| 7. Fixed a bug in SpanNearQuery when ordered. (Paul Elschot via cutting) |
| |
| 8. Fixed so that FSDirectory's locks still work when the |
| java.io.tmpdir system property is null. (cutting) |
| |
| 9. Changed FilteredTermEnum's constructor to take no parameters, |
| as the parameters were ignored anyway (bug #28858) |
| |
| 1.4 RC2 |
| |
| 1. GermanAnalyzer now throws an exception if the stopword file |
| cannot be found (bug #27987). It now uses LowerCaseFilter |
| (bug #18410) (Daniel Naber via Otis, Erik) |
| |
| 2. Fixed a few bugs in the file format documentation. (cutting) |
| |
| |
| 1.4 RC1 |
| |
| 1. Changed the format of the .tis file, so that: |
| |
| - it has a format version number, which makes it easier to |
| back-compatibly change file formats in the future. |
| |
| - the term count is now stored as a long. This was the one aspect |
| of the Lucene's file formats which limited index size. |
| |
| - a few internal index parameters are now stored in the index, so |
| that they can (in theory) now be changed from index to index, |
| although there is not yet an API to do so. |
| |
| These changes are back compatible. The new code can read old |
| indexes. But old code will not be able read new indexes. (cutting) |
| |
| 2. Added an optimized implementation of TermDocs.skipTo(). A skip |
| table is now stored for each term in the .frq file. This only |
| adds a percent or two to overall index size, but can substantially |
| speedup many searches. (cutting) |
| |
| 3. Restructured the Scorer API and all Scorer implementations to take |
| advantage of an optimized TermDocs.skipTo() implementation. In |
| particular, PhraseQuerys and conjunctive BooleanQuerys are |
| faster when one clause has substantially fewer matches than the |
| others. (A conjunctive BooleanQuery is a BooleanQuery where all |
| clauses are required.) (cutting) |
| |
| 4. Added new class ParallelMultiSearcher. Combined with |
| RemoteSearchable this makes it easy to implement distributed |
| search systems. (Jean-Francois Halleux via cutting) |
| |
| 5. Added support for hit sorting. Results may now be sorted by any |
| indexed field. For details see the javadoc for |
| Searcher#search(Query, Sort). (Tim Jones via Cutting) |
| |
| 6. Changed FSDirectory to auto-create a full directory tree that it |
| needs by using mkdirs() instead of mkdir(). (Mladen Turk via Otis) |
| |
| 7. Added a new span-based query API. This implements, among other |
| things, nested phrases. See javadocs for details. (Doug Cutting) |
| |
| 8. Added new method Query.getSimilarity(Searcher), and changed |
| scorers to use it. This permits one to subclass a Query class so |
| that it can specify its own Similarity implementation, perhaps |
| one that delegates through that of the Searcher. (Julien Nioche |
| via Cutting) |
| |
| 9. Added MultiReader, an IndexReader that combines multiple other |
| IndexReaders. (Cutting) |
| |
| 10. Added support for term vectors. See Field#isTermVectorStored(). |
| (Grant Ingersoll, Cutting & Dmitry) |
| |
| 11. Fixed the old bug with escaping of special characters in query |
| strings: http://issues.apache.org/bugzilla/show_bug.cgi?id=24665 |
| (Jean-Francois Halleux via Otis) |
| |
| 12. Added support for overriding default values for the following, |
| using system properties: |
| - default commit lock timeout |
| - default maxFieldLength |
| - default maxMergeDocs |
| - default mergeFactor |
| - default minMergeDocs |
| - default write lock timeout |
| (Otis) |
| |
| 13. Changed QueryParser.jj to allow '-' and '+' within tokens: |
| http://issues.apache.org/bugzilla/show_bug.cgi?id=27491 |
| (Morus Walter via Otis) |
| |
| 14. Changed so that the compound index format is used by default. |
| This makes indexing a bit slower, but vastly reduces the chances |
| of file handle problems. (Cutting) |
| |
| |
| 1.3 final |
| |
| 1. Added catch of BooleanQuery$TooManyClauses in QueryParser to |
| throw ParseException instead. (Erik Hatcher) |
| |
| 2. Fixed a NullPointerException in Query.explain(). (Doug Cutting) |
| |
| 3. Added a new method IndexReader.setNorm(), that permits one to |
| alter the boosting of fields after an index is created. |
| |
| 4. Distinguish between the final position and length when indexing a |
| field. The length is now defined as the total number of tokens, |
| instead of the final position, as it was previously. Length is |
| used for score normalization (Similarity.lengthNorm()) and for |
| controlling memory usage (IndexWriter.maxFieldLength). In both of |
| these cases, the total number of tokens is a better value to use |
| than the final token position. Position is used in phrase |
| searching (see PhraseQuery and Token.setPositionIncrement()). |
| |
| 5. Fix StandardTokenizer's handling of CJK characters (Chinese, |
| Japanese and Korean ideograms). Previously contiguous sequences |
| were combined in a single token, which is not very useful. Now |
| each ideogram generates a separate token, which is more useful. |
| |
| |
| 1.3 RC3 |
| |
| 1. Added minMergeDocs in IndexWriter. This can be raised to speed |
| indexing without altering the number of files, but only using more |
| memory. (Julien Nioche via Otis) |
| |
| 2. Fix bug #24786, in query rewriting. (bschneeman via Cutting) |
| |
| 3. Fix bug #16952, in demo HTML parser, skip comments in |
| javascript. (Christoph Goller) |
| |
| 4. Fix bug #19253, in demo HTML parser, add whitespace as needed to |
| output (Daniel Naber via Christoph Goller) |
| |
| 5. Fix bug #24301, in demo HTML parser, long titles no longer |
| hang things. (Christoph Goller) |
| |
| 6. Fix bug #23534, Replace use of file timestamp of segments file |
| with an index version number stored in the segments file. This |
| resolves problems when running on file systems with low-resolution |
| timestamps, e.g., HFS under MacOS X. (Christoph Goller) |
| |
| 7. Fix QueryParser so that TokenMgrError is not thrown, only |
| ParseException. (Erik Hatcher) |
| |
| 8. Fix some bugs introduced by change 11 of RC2. (Christoph Goller) |
| |
| 9. Fixed a problem compiling TestRussianStem. (Christoph Goller) |
| |
| 10. Cleaned up some build stuff. (Erik Hatcher) |
| |
| |
| 1.3 RC2 |
| |
| 1. Added getFieldNames(boolean) to IndexReader, SegmentReader, and |
| SegmentsReader. (Julien Nioche via otis) |
| |
| 2. Changed file locking to place lock files in |
| System.getProperty("java.io.tmpdir"), where all users are |
| permitted to write files. This way folks can open and correctly |
| lock indexes which are read-only to them. |
| |
| 3. IndexWriter: added a new method, addDocument(Document, Analyzer), |
| permitting one to easily use different analyzers for different |
| documents in the same index. |
| |
| 4. Minor enhancements to FuzzyTermEnum. |
| (Christoph Goller via Otis) |
| |
| 5. PriorityQueue: added insert(Object) method and adjusted IndexSearcher |
| and MultiIndexSearcher to use it. |
| (Christoph Goller via Otis) |
| |
| 6. Fixed a bug in IndexWriter that returned incorrect docCount(). |
| (Christoph Goller via Otis) |
| |
| 7. Fixed SegmentsReader to eliminate the confusing and slightly different |
| behaviour of TermEnum when dealing with an enumeration of all terms, |
| versus an enumeration starting from a specific term. |
| This patch also fixes incorrect term document frequencies when the same term |
| is present in multiple segments. |
| (Christoph Goller via Otis) |
| |
| 8. Added CachingWrapperFilter and PerFieldAnalyzerWrapper. (Erik Hatcher) |
| |
| 9. Added support for the new "compound file" index format (Dmitry |
| Serebrennikov) |
| |
| 10. Added Locale setting to QueryParser, for use by date range parsing. |
| |
| 11. Changed IndexReader so that it can be subclassed by classes |
| outside of its package. Previously it had package-private |
| abstract methods. Also modified the index merging code so that it |
| can work on an arbitrary IndexReader implementation, and added a |
| new method, IndexWriter.addIndexes(IndexReader[]), to take |
| advantage of this. (cutting) |
| |
| 12. Added a limit to the number of clauses which may be added to a |
| BooleanQuery. The default limit is 1024 clauses. This should |
| stop most OutOfMemoryExceptions by prefix, wildcard and fuzzy |
| queries which run amok. (cutting) |
| |
| 13. Add new method: IndexReader.undeleteAll(). This undeletes all |
| deleted documents which still remain in the index. (cutting) |
| |
| |
| 1.3 RC1 |
| |
| 1. Fixed PriorityQueue's clear() method. |
| Fix for bug 9454, http://nagoya.apache.org/bugzilla/show_bug.cgi?id=9454 |
| (Matthijs Bomhoff via otis) |
| |
| 2. Changed StandardTokenizer.jj grammar for EMAIL tokens. |
| Fix for bug 9015, http://nagoya.apache.org/bugzilla/show_bug.cgi?id=9015 |
| (Dale Anson via otis) |
| |
| 3. Added the ability to disable lock creation by using disableLuceneLocks |
| system property. This is useful for read-only media, such as CD-ROMs. |
| (otis) |
| |
| 4. Added id method to Hits to be able to access the index global id. |
| Required for sorting options. |
| (carlson) |
| |
| 5. Added support for new range query syntax to QueryParser.jj. |
| (briangoetz) |
| |
| 6. Added the ability to retrieve HTML documents' META tag values to |
| HTMLParser.jj. |
| (Mark Harwood via otis) |
| |
| 7. Modified QueryParser to make it possible to programmatically specify the |
| default Boolean operator (OR or AND). |
| (Péter Halácsy via otis) |
| |
| 8. Made many search methods and classes non-final, per requests. |
| This includes IndexWriter and IndexSearcher, among others. |
| (cutting) |
| |
| 9. Added class RemoteSearchable, providing support for remote |
| searching via RMI. The test class RemoteSearchableTest.java |
| provides an example of how this can be used. (cutting) |
| |
| 10. Added PhrasePrefixQuery (and supporting MultipleTermPositions). The |
| test class TestPhrasePrefixQuery provides the usage example. |
| (Anders Nielsen via otis) |
| |
| 11. Changed the German stemming algorithm to ignore case while |
| stripping. The new algorithm is faster and produces more equal |
| stems from nouns and verbs derived from the same word. |
| (gschwarz) |
| |
| 12. Added support for boosting the score of documents and fields via |
| the new methods Document.setBoost(float) and Field.setBoost(float). |
| |
| Note: This changes the encoding of an indexed value. Indexes |
| should be re-created from scratch in order for search scores to |
| be correct. With the new code and an old index, searches will |
| yield very large scores for shorter fields, and very small scores |
| for longer fields. Once the index is re-created, scores will be |
| as before. (cutting) |
| |
| 13. Added new method Token.setPositionIncrement(). |
| |
| This permits, for the purpose of phrase searching, placing |
| multiple terms in a single position. This is useful with |
| stemmers that produce multiple possible stems for a word. |
| |
| This also permits the introduction of gaps between terms, so that |
| terms which are adjacent in a token stream will not be matched by |
| and exact phrase query. This makes it possible, e.g., to build |
| an analyzer where phrases are not matched over stop words which |
| have been removed. |
| |
| Finally, repeating a token with an increment of zero can also be |
| used to boost scores of matches on that token. (cutting) |
| |
| 14. Added new Filter class, QueryFilter. This constrains search |
| results to only match those which also match a provided query. |
| Results are cached, so that searches after the first on the same |
| index using this filter are very fast. |
| |
| This could be used, for example, with a RangeQuery on a formatted |
| date field to implement date filtering. One could re-use a |
| single QueryFilter that matches, e.g., only documents modified |
| within the last week. The QueryFilter and RangeQuery would only |
| need to be reconstructed once per day. (cutting) |
| |
| 15. Added a new IndexWriter method, getAnalyzer(). This returns the |
| analyzer used when adding documents to this index. (cutting) |
| |
| 16. Fixed a bug with IndexReader.lastModified(). Before, document |
| deletion did not update this. Now it does. (cutting) |
| |
| 17. Added Russian Analyzer. |
| (Boris Okner via otis) |
| |
| 18. Added a public, extensible scoring API. For details, see the |
| javadoc for org.apache.lucene.search.Similarity. |
| |
| 19. Fixed return of Hits.id() from float to int. (Terry Steichen via Peter). |
| |
| 20. Added getFieldNames() to IndexReader and Segment(s)Reader classes. |
| (Peter Mularien via otis) |
| |
| 21. Added getFields(String) and getValues(String) methods. |
| Contributed by Rasik Pandey on 2002-10-09 |
| (Rasik Pandey via otis) |
| |
| 22. Revised internal search APIs. Changes include: |
| |
| a. Queries are no longer modified during a search. This makes |
| it possible, e.g., to reuse the same query instance with |
| multiple indexes from multiple threads. |
| |
| b. Term-expanding queries (e.g. PrefixQuery, WildcardQuery, |
| etc.) now work correctly with MultiSearcher, fixing bugs 12619 |
| and 12667. |
| |
| c. Boosting BooleanQuery's now works, and is supported by the |
| query parser (problem reported by Lee Mallabone). Thus a query |
| like "(+foo +bar)^2 +baz" is now supported and equivalent to |
| "(+foo^2 +bar^2) +baz". |
| |
| d. New method: Query.rewrite(IndexReader). This permits a |
| query to re-write itself as an alternate, more primitive query. |
| Most of the term-expanding query classes (PrefixQuery, |
| WildcardQuery, etc.) are now implemented using this method. |
| |
| e. New method: Searchable.explain(Query q, int doc). This |
| returns an Explanation instance that describes how a particular |
| document is scored against a query. An explanation can be |
| displayed as either plain text, with the toString() method, or |
| as HTML, with the toHtml() method. Note that computing an |
| explanation is as expensive as executing the query over the |
| entire index. This is intended to be used in developing |
| Similarity implementations, and, for good performance, should |
| not be displayed with every hit. |
| |
| f. Scorer and Weight are public, not package protected. It now |
| possible for someone to write a Scorer implementation that is |
| not in the org.apache.lucene.search package. This is still |
| fairly advanced programming, and I don't expect anyone to do |
| this anytime soon, but at least now it is possible. |
| |
| g. Added public accessors to the primitive query classes |
| (TermQuery, PhraseQuery and BooleanQuery), permitting access to |
| their terms and clauses. |
| |
| Caution: These are extensive changes and they have not yet been |
| tested extensively. Bug reports are appreciated. |
| (cutting) |
| |
| 23. Added convenience RAMDirectory constructors taking File and String |
| arguments, for easy FSDirectory to RAMDirectory conversion. |
| (otis) |
| |
| 24. Added code for manual renaming of files in FSDirectory, since it |
| has been reported that java.io.File's renameTo(File) method sometimes |
| fails on Windows JVMs. |
| (Matt Tucker via otis) |
| |
| 25. Refactored QueryParser to make it easier for people to extend it. |
| Added the ability to automatically lower-case Wildcard terms in |
| the QueryParser. |
| (Tatu Saloranta via otis) |
| |
| |
| 1.2 RC6 |
| |
| 1. Changed QueryParser.jj to have "?" be a special character which |
| allowed it to be used as a wildcard term. Updated TestWildcard |
| unit test also. (Ralf Hettesheimer via carlson) |
| |
| 1.2 RC5 |
| |
| 1. Renamed build.properties to default.properties and updated |
| the BUILD.txt document to describe how to override the |
| default.property settings without having to edit the file. This |
| brings the build process closer to Scarab's build process. |
| (jon) |
| |
| 2. Added MultiFieldQueryParser class. (Kelvin Tan, via otis) |
| |
| 3. Updated "powered by" links. (otis) |
| |
| 4. Fixed instruction for setting up JavaCC - Bug #7017 (otis) |
| |
| 5. Added throwing exception if FSDirectory could not create directory |
| - Bug #6914 (Eugene Gluzberg via otis) |
| |
| 6. Update MultiSearcher, MultiFieldParse, Constants, DateFilter, |
| LowerCaseTokenizer javadoc (otis) |
| |
| 7. Added fix to avoid NullPointerException in results.jsp |
| (Mark Hayes via otis) |
| |
| 8. Changed Wildcard search to find 0 or more char instead of 1 or more |
| (Lee Mallobone, via otis) |
| |
| 9. Fixed error in offset issue in GermanStemFilter - Bug #7412 |
| (Rodrigo Reyes, via otis) |
| |
| 10. Added unit tests for wildcard search and DateFilter (otis) |
| |
| 11. Allow co-existence of indexed and non-indexed fields with the same name |
| (cutting/casper, via otis) |
| |
| 12. Add escape character to query parser. |
| (briangoetz) |
| |
| 13. Applied a patch that ensures that searches that use DateFilter |
| don't throw an exception when no matches are found. (David Smiley, via |
| otis) |
| |
| 14. Fixed bugs in DateFilter and wildcardquery unit tests. (cutting, otis, carlson) |
| |
| |
| 1.2 RC4 |
| |
| 1. Updated contributions section of website. |
| Add XML Document #3 implementation to Document Section. |
| Also added Term Highlighting to Misc Section. (carlson) |
| |
| 2. Fixed NullPointerException for phrase searches containing |
| unindexed terms, introduced in 1.2RC3. (cutting) |
| |
| 3. Changed document deletion code to obtain the index write lock, |
| enforcing the fact that document addition and deletion cannot be |
| performed concurrently. (cutting) |
| |
| 4. Various documentation cleanups. (otis, acoliver) |
| |
| 5. Updated "powered by" links. (cutting, jon) |
| |
| 6. Fixed a bug in the GermanStemmer. (Bernhard Messer, via otis) |
| |
| 7. Changed Term and Query to implement Serializable. (scottganyo) |
| |
| 8. Fixed to never delete indexes added with IndexWriter.addIndexes(). |
| (cutting) |
| |
| 9. Upgraded to JUnit 3.7. (otis) |
| |
| 1.2 RC3 |
| |
| 1. IndexWriter: fixed a bug where adding an optimized index to an |
| empty index failed. This was encountered using addIndexes to copy |
| a RAMDirectory index to an FSDirectory. |
| |
| 2. RAMDirectory: fixed a bug where RAMInputStream could not read |
| across more than across a single buffer boundary. |
| |
| 3. Fix query parser so it accepts queries with unicode characters. |
| (briangoetz) |
| |
| 4. Fix query parser so that PrefixQuery is used in preference to |
| WildcardQuery when there's only an asterisk at the end of the |
| term. Previously PrefixQuery would never be used. |
| |
| 5. Fix tests so they compile; fix ant file so it compiles tests |
| properly. Added test cases for Analyzers and PriorityQueue. |
| |
| 6. Updated demos, added Getting Started documentation. (acoliver) |
| |
| 7. Added 'contributions' section to website & docs. (carlson) |
| |
| 8. Removed JavaCC from source distribution for copyright reasons. |
| Folks must now download this separately from metamata in order to |
| compile Lucene. (cutting) |
| |
| 9. Substantially improved the performance of DateFilter by adding the |
| ability to reuse TermDocs objects. (cutting) |
| |
| 10. Added IndexReader methods: |
| public static boolean indexExists(String directory); |
| public static boolean indexExists(File directory); |
| public static boolean indexExists(Directory directory); |
| public static boolean isLocked(Directory directory); |
| public static void unlock(Directory directory); |
| (cutting, otis) |
| |
| 11. Fixed bugs in GermanAnalyzer (gschwarz) |
| |
| |
| 1.2 RC2: |
| - added sources to distribution |
| - removed broken build scripts and libraries from distribution |
| - SegmentsReader: fixed potential race condition |
| - FSDirectory: fixed so that getDirectory(xxx,true) correctly |
| erases the directory contents, even when the directory |
| has already been accessed in this JVM. |
| - RangeQuery: Fix issue where an inclusive range query would |
| include the nearest term in the index above a non-existant |
| specified upper term. |
| - SegmentTermEnum: Fix NullPointerException in clone() method |
| when the Term is null. |
| - JDK 1.1 compatibility fix: disabled lock files for JDK 1.1, |
| since they rely on a feature added in JDK 1.2. |
| |
| 1.2 RC1 (first Apache release): |
| - packages renamed from com.lucene to org.apache.lucene |
| - license switched from LGPL to Apache |
| - ant-only build -- no more makefiles |
| - addition of lock files--now fully thread & process safe |
| - addition of German stemmer |
| - MultiSearcher now supports low-level search API |
| - added RangeQuery, for term-range searching |
| - Analyzers can choose tokenizer based on field name |
| - misc bug fixes. |
| |
| 1.01b (last Sourceforge release) |
| . a few bug fixes |
| . new Query Parser |
| . new prefix query (search for "foo*" matches "food") |
| |
| 1.0 |
| |
| This release fixes a few serious bugs and also includes some |
| performance optimizations, a stemmer, and a few other minor |
| enhancements. |
| |
| 0.04 |
| |
| Lucene now includes a grammar-based tokenizer, StandardTokenizer. |
| |
| The only tokenizer included in the previous release (LetterTokenizer) |
| identified terms consisting entirely of alphabetic characters. The |
| new tokenizer uses a regular-expression grammar to identify more |
| complex classes of terms, including numbers, acronyms, email |
| addresses, etc. |
| |
| StandardTokenizer serves two purposes: |
| |
| 1. It is a much better, general purpose tokenizer for use by |
| applications as is. |
| |
| The easiest way for applications to start using |
| StandardTokenizer is to use StandardAnalyzer. |
| |
| 2. It provides a good example of grammar-based tokenization. |
| |
| If an application has special tokenization requirements, it can |
| implement a custom tokenizer by copying the directory containing |
| the new tokenizer into the application and modifying it |
| accordingly. |
| |
| 0.01 |
| |
| First open source release. |
| |
| The code has been re-organized into a new package and directory |
| structure for this release. It builds OK, but has not been tested |
| beyond that since the re-organization. |