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Tantivy 0.17

  • Change to non-strict schema. Ignore fields in data which are not defined in schema. Previously this returned an error. #1211
  • Facets are necessarily indexed. Existing index with indexed facets should work out of the box. Index without facets that are marked with index: false should be broken (but they were already broken in a sense). (@fulmicoton) #1195 .

Tantivy 0.16.2

  • Bugfix in FuzzyTermQuery. (tranposition_cost_one was not doing anything)

Tantivy 0.16.1

  • Major Bugfix on multivalued fastfield. #1151
  • Demux operation (@PSeitz)

Tantivy 0.16.0

  • Bugfix in the filesum check. (@evanxg852000) #1127
  • Bugfix in positions when the index is sorted by a field. (@appaquet) #1125

Tantivy 0.15.3

  • Major bugfix. Deleting documents was broken when the index was sorted by a field. (@appaquet, @fulmicoton) #1101

Tantivy 0.15.2

  • Major bugfix. DocStore still panics when a deleted doc is at the beginning of a block. (@appaquet) #1088

Tantivy 0.15.1

  • Major bugfix. DocStore panics when first block is deleted. (@appaquet) #1077

Tantivy 0.15.0

  • API Changes. Using Range instead of (start, end) in the API and internals (FileSlice, OwnedBytes, Snippets, ...) This change is breaking but migration is trivial.
  • Added an Histogram collector. (@fulmicoton) #994
  • Added support for Option. (@fulmicoton)
  • DocAddress is now a struct (@scampi) #987
  • Bugfix consistent tie break handling in facet's topk (@hardikpnsp) #357
  • Date field support for range queries (@rihardsk) #516
  • Added lz4-flex as the default compression scheme in tantivy (@PSeitz) #1009
  • Renamed a lot of symbols to avoid all uppercasing on acronyms, as per new clippy recommendation. For instance, RAMDirectory -> RamDirectory. (@fulmicoton)
  • Simplified positions index format (@fulmicoton) #1022
  • Moved bitpacking to bitpacker subcrate and add BlockedBitpacker, which bitpacks blocks of 128 elements (@PSeitz) #1030
  • Added support for more-like-this query in tantivy (@evanxg852000) #1011
  • Added support for sorting an index, e.g presorting documents in an index by a timestamp field. This can heavily improve performance for certain scenarios, by utilizing the sorted data (Top-n optimizations)(@PSeitz). #1026
  • Add iterator over documents in doc store (@PSeitz). #1044
  • Fix log merge policy (@PSeitz). #1043
  • Add detection to avoid small doc store blocks on merge (@PSeitz). #1054
  • Make doc store compression dynamic (@PSeitz). #1060
  • Switch to json for footer version handling (@PSeitz). #1060
  • Updated TermMerger implementation to rely on the union feature of the FST (@scampi) #469
  • Add boolean marking whether position is required in the query_terms API call (@fulmicoton). #1070

Tantivy 0.14.0

  • Remove dependency to atomicwrites #833 .Implemented by @fulmicoton upon suggestion and research from @asafigan).
  • Migrated tantivy error from the now deprecated failure crate to thiserror #760. (@hirevo)
  • API Change. Accessing the typed value off a Schema::Value now returns an Option instead of panicking if the type does not match.
  • Large API Change in the Directory API. Tantivy used to assume that all files could be somehow memory mapped. After this change, Directory return a FileSlice that can be reduced and eventually read into an OwnedBytes object. Long and blocking io operation are still required by they do not span over the entire file.
  • Added support for Brotli compression in the DocStore. (@ppodolsky)
  • Added helper for building intersections and unions in BooleanQuery (@guilload)
  • Bugfix in Query::explain
  • Removed dependency on notify #924. Replaced with FileWatcher struct that polls meta file every 500ms in background thread. (@halvorboe @guilload)
  • Added FilterCollector, which wraps another collector and filters docs using a predicate over a fast field (@barrotsteindev)
  • Simplified the encoding of the skip reader struct. BlockWAND max tf is now encoded over a single byte. (@fulmicoton)
  • FilterCollector now supports all Fast Field value types (@barrotsteindev)
  • FastField are not all loaded when opening the segment reader. (@fulmicoton)
  • Added an API to merge segments, see tantivy::merge_segments #1005. (@evanxg852000)

This version breaks compatibility and requires users to reindex everything.

Tantivy 0.13.2

Bugfix. Acquiring a facet reader on a segment that does not contain any doc with this facet returns None. (#896)

Tantivy 0.13.1

Made Query and Collector Send + Sync. Updated misc dependency versions.

Tantivy 0.13.0

Tantivy 0.13 introduce a change in the index format that will require you to reindex your index (BlockWAND information are added in the skiplist). The index size increase is minor as this information is only added for full blocks. If you have a massive index for which reindexing is not an option, please contact me so that we can discuss possible solutions.

  • Bugfix in FuzzyTermQuery not matching terms by prefix when it should (@Peachball)
  • Relaxed constraints on the custom/tweak score functions. At the segment level, they can be mut, and they are not required to be Sync + Send.
  • MMapDirectory::open does not return a Result anymore.
  • Change in the DocSet and Scorer API. (@fulmicoton). A freshly created DocSet point directly to their first doc. A sentinel value called TERMINATED marks the end of a DocSet. .advance() returns the new DocId. Scorer::skip(target) has been replaced by Scorer::seek(target) and returns the resulting DocId. As a result, iterating through DocSet now looks as follows
let mut doc = docset.doc();
while doc != TERMINATED {
   // ...
   doc = docset.advance();
}

The change made it possible to greatly simplify a lot of the docset's code.

  • Misc internal optimization and introduction of the Scorer::for_each_pruning function. (@fulmicoton)
  • Added an offset option to the Top(.*)Collectors. (@robyoung)
  • Added Block WAND. Performance on TOP-K on term-unions should be greatly increased. (@fulmicoton, and special thanks to the PISA team for answering all my questions!)

Tantivy 0.12.0

  • Removing static dispatch in tokenizers for simplicity. (#762)
  • Added backward iteration for TermDictionary stream. (@halvorboe)
  • Fixed a performance issue when searching for the posting lists of a missing term (@audunhalland)
  • Added a configurable maximum number of docs (10M by default) for a segment to be considered for merge (@hntd187, landed by @halvorboe #713)
  • Important Bugfix #777, causing tantivy to retain memory mapping. (diagnosed by @poljar)
  • Added support for field boosting. (#547, @fulmicoton)

How to update?

Crates relying on custom tokenizer, or registering tokenizer in the manager will require some minor changes. Check https://github.com/quickwit-inc/tantivy/blob/main/examples/custom_tokenizer.rs to check for some code sample.

Tantivy 0.11.3

  • Fixed DateTime as a fast field (#735)

Tantivy 0.11.2

  • The future returned by IndexWriter::merge does not borrow self mutably anymore (#732)
  • Exposing a constructor for WatchHandle (#731)

Tantivy 0.11.1

  • Bug fix #729

Tantivy 0.11.0

  • Added f64 field. Internally reuse u64 code the same way i64 does (@fdb-hiroshima)
  • Various bugfixes in the query parser.
    • Better handling of hyphens in query parser. (#609)
    • Better handling of whitespaces.
  • Closes #498 - add support for Elastic-style unbounded range queries for alphanumeric types eg. "title:>hello", "weight:>=70.5", "height:<200" (@petr-tik)
  • API change around Box<BoxableTokenizer>. See detail in #629
  • Avoid rebuilding Regex automaton whenever a regex query is reused. #639 (@brainlock)
  • Add footer with some metadata to index files. #605 (@fdb-hiroshima)
  • Add a method to check the compatibility of the footer in the index with the running version of tantivy (@petr-tik)
  • TopDocs collector: ensure stable sorting on equal score. #671 (@brainlock)
  • Added handling of pre-tokenized text fields (#642), which will enable users to load tokens created outside tantivy. See usage in examples/pre_tokenized_text. (@kkoziara)
  • Fix crash when committing multiple times with deleted documents. #681 (@brainlock)

How to update?

  • The index format is changed. You are required to reindex your data to use tantivy 0.11.
  • Box<dyn BoxableTokenizer> has been replaced by a BoxedTokenizer struct.
  • Regex are now compiled when the RegexQuery instance is built. As a result, it can now return an error and handling the Result is required.
  • tantivy::version() now returns a Version object. This object implements ToString()

Tantivy 0.10.2

  • Closes #656. Solving memory leak.

Tantivy 0.10.1

  • Closes #544. A few users experienced problems with the directory watching system. Avoid watching the mmap directory until someone effectively creates a reader that uses this functionality.

Tantivy 0.10.0

Tantivy 0.10.0 index format is compatible with the index format in 0.9.0.

  • Added an API to easily tweak or entirely replace the default score. See TopDocs::tweak_scoreand TopScore::custom_score (@fulmicoton)
  • Added an ASCII folding filter (@drusellers)
  • Bugfix in query.count in presence of deletes (@fulmicoton)
  • Added .explain(...) in Query and Weight to (@fulmicoton)
  • Added an efficient way to delete_all_documents in IndexWriter (@petr-tik). All segments are simply removed.

Minor

  • Switched to Rust 2018 (@uvd)
  • Small simplification of the code. Calling .freq() or .doc() when .advance() has never been called on segment postings should panic from now on.
  • Tokens exceeding u16::max_value() - 4 chars are discarded silently instead of panicking.
  • Fast fields are now preloaded when the SegmentReader is created.
  • IndexMeta is now public. (@hntd187)
  • IndexWriter add_document, delete_term. IndexWriter is Sync, making it possible to use it with a Arc<RwLock<IndexWriter>>. add_document and delete_term can only require a read lock. (@fulmicoton)
  • Introducing Opstamp as an expressive type alias for u64. (@petr-tik)
  • Stamper now relies on AtomicU64 on all platforms (@petr-tik)
  • Bugfix - Files get deleted slightly earlier
  • Compilation resources improved (@fdb-hiroshima)

How to update?

Your program should be usable as is.

Fast fields

Fast fields used to be accessed directly from the SegmentReader. The API changed, you are now required to acquire your fast field reader via the segment_reader.fast_fields(), and use one of the typed method:

  • .u64(), .i64() if your field is single-valued ;
  • .u64s(), .i64s() if your field is multi-valued ;
  • .bytes() if your field is bytes fast field.

Tantivy 0.9.0

0.9.0 index format is not compatible with the previous index format.

  • MAJOR BUGFIX : Some Mmap objects were being leaked, and would never get released. (@fulmicoton)
  • Removed most unsafe (@fulmicoton)
  • Indexer memory footprint improved. (VInt comp, inlining the first block. (@fulmicoton)
  • Stemming in other language possible (@pentlander)
  • Segments with no docs are deleted earlier (@barrotsteindev)
  • Added grouped add and delete operations. They are guaranteed to happen together (i.e. they cannot be split by a commit). In addition, adds are guaranteed to happen on the same segment. (@elbow-jason)
  • Removed INT_STORED and INT_INDEXED. It is now possible to use STORED and INDEXED for int fields. (@fulmicoton)
  • Added DateTime field (@barrotsteindev)
  • Added IndexReader. By default, index is reloaded automatically upon new commits (@fulmicoton)
  • SIMD linear search within blocks (@fulmicoton)

How to update ?

tantivy 0.9 brought some API breaking change. To update from tantivy 0.8, you will need to go through the following steps.

  • schema::INT_INDEXED and schema::INT_STORED should be replaced by schema::INDEXED and schema::INT_STORED.

  • The index now does not hold the pool of searcher anymore. You are required to create an intermediary object called IndexReader for this.

    // create the reader. You typically need to create 1 reader for the entire
// lifetime of you program.
let reader = index.reader()?;

// Acquire a searcher (previously `index.searcher()`) is now written:
let searcher = reader.searcher();

// With the default setting of the reader, you are not required to
// call `index.load_searchers()` anymore.
//
// The IndexReader will pick up that change automatically, regardless
// of whether the update was done in a different process or not.
// If this behavior is not wanted, you can create your reader with
// the `ReloadPolicy::Manual`, and manually decide when to reload the index
// by calling `reader.reload()?`.

Tantivy 0.8.2

Fixing build for x86_64 platforms. (#496) No need to update from 0.8.1 if tantivy is building on your platform.

Tantivy 0.8.1

Hotfix of #476.

Merge was reflecting deletes before commit was passed. Thanks @barrotsteindev for reporting the bug.

Tantivy 0.8.0

No change in the index format

  • API Breaking change in the collector API. (@jwolfe, @fulmicoton)
  • Multithreaded search (@jwolfe, @fulmicoton)

Tantivy 0.7.1

No change in the index format

  • Bugfix: NGramTokenizer panics on non ascii chars
  • Added a space usage API

Tantivy 0.7

  • Skip data for doc ids and positions (@fulmicoton), greatly improving performance
  • Tantivy error now rely on the failure crate (@drusellers)
  • Added support for AND, OR, NOT syntax in addition to the +,- syntax
  • Added a snippet generator with highlight (@vigneshsarma, @fulmicoton)
  • Added a TopFieldCollector (@pentlander)

Tantivy 0.6.1

  • Bugfix #324. GC removing was removing file that were still in useful
  • Added support for parsing AllQuery and RangeQuery via QueryParser
    • AllQuery: *
    • RangeQuery:
      • Inclusive field:[startIncl to endIncl]
      • Exclusive field:{startExcl to endExcl}
      • Mixed field:[startIncl to endExcl} and vice versa
      • Unbounded field:[start to *], field:[* to end]

Tantivy 0.6

Special thanks to @drusellers and @jason-wolfe for their contributions to this release!

  • Removed C code. Tantivy is now pure Rust. (@fulmicoton)
  • BM25 (@fulmicoton)
  • Approximate field norms encoded over 1 byte. (@fulmicoton)
  • Compiles on stable rust (@fulmicoton)
  • Add &[u8] fastfield for associating arbitrary bytes to each document (@jason-wolfe) (#270)
    • Completely uncompressed
    • Internally: One u64 fast field for indexes, one fast field for the bytes themselves.
  • Add NGram token support (@drusellers)
  • Add Stopword Filter support (@drusellers)
  • Add a FuzzyTermQuery (@drusellers)
  • Add a RegexQuery (@drusellers)
  • Various performance improvements (@fulmicoton)_

Tantivy 0.5.2

  • bugfix #274
  • bugfix #280
  • bugfix #289

Tantivy 0.5.1

  • bugfix #254 : tantivy failed if no documents in a segment contained a specific field.

Tantivy 0.5

  • Faceting
  • RangeQuery
  • Configurable tokenization pipeline
  • Bugfix in PhraseQuery
  • Various query optimisation
  • Allowing very large indexes
    • 64 bits file address
    • Smarter encoding of the TermInfo objects

Tantivy 0.4.3

  • Bugfix race condition when deleting files. (#198)

Tantivy 0.4.2

  • Prevent usage of AVX2 instructions (#201)

Tantivy 0.4.1

  • Bugfix for non-indexed fields. (#199)

Tantivy 0.4.0

  • Raise the limit of number of fields (previously 256 fields) (@fulmicoton)
  • Removed u32 fields. They are replaced by u64 and i64 fields (#65) (@fulmicoton)
  • Optimized skip in SegmentPostings (#130) (@lnicola)
  • Replacing rustc_serialize by serde. Kudos to @KodrAus and @lnicola
  • Using error-chain (@KodrAus)
  • QueryParser: (@fulmicoton)
    • Explicit error returned when searched for a term that is not indexed
    • Searching for a int term via the query parser was broken (age:1)
    • Searching for a non-indexed field returns an explicit Error
    • Phrase query for non-tokenized field are not tokenized by the query parser.
  • Faster/Better indexing (@fulmicoton)
    • using murmurhash2
    • faster merging
    • more memory efficient fast field writer (@lnicola )
    • better handling of collisions
    • lesser memory usage
  • Added API, most notably to iterate over ranges of terms (@fulmicoton)
  • Bugfix that was preventing to unmap segment files, on index drop (@fulmicoton)
  • Made the doc! macro public (@fulmicoton)
  • Added an alternative implementation of the streaming dictionary (@fulmicoton)

Tantivy 0.3.1

  • Expose a method to trigger files garbage collection

Tantivy 0.3

Special thanks to @Kodraus @lnicola @Ameobea @manuel-woelker @celaus for their contribution to this release.

Thanks also to everyone in tantivy gitter chat for their advise and company :)

https://gitter.im/tantivy-search/tantivy

Warning:

Tantivy 0.3 is NOT backward compatible with tantivy 0.2 code and index format. You should not expect backward compatibility before tantivy 1.0.

New Features

  • Delete. You can now delete documents from an index.
  • Support for windows (Thanks to @lnicola)

Various Bugfixes & small improvements

  • Added CI for Windows (https://ci.appveyor.com/project/fulmicoton/tantivy) Thanks to @KodrAus ! (#108)
  • Various dependy version update (Thanks to @Ameobea) #76
  • Fixed several race conditions in Index.wait_merge_threads
  • Fixed #72. Mmap were never released.
  • Fixed #80. Fast field used to take an amplitude of 32 bits after a merge. (Ouch!)
  • Fixed #92. u32 are now encoded using big endian in the fst in order to make there enumeration consistent with the natural ordering.
  • Building binary targets for tantivy-cli (Thanks to @KodrAus)
  • Misc invisible bug fixes, and code cleanup.
  • Use