Atlas Search Changelog¶

28 September 2021 Release¶

Autocomplete improvements in this release:

• Adds support for analyzers in the index definition for autocomplete.
• Boosts exact matches in autocomplete operator.
• Adds rightEdgeGram tokenization strategy to create edgeGram-like tokens starting at the right side of words (instead of the left side).

Bug fixes in this release:

• Fixes objectId highlighting error.

07 Septermber 2021 Release¶

• Allows indexes to enter a recovering state and remain available after encountering certain replication errors.

13 July 2021 Release¶

• Adds support for synonyms, which can be defined in a source collection and mapped to search indexes via the Atlas API.

01 June 2021 Release¶

• Supports wildcard path for Highlighting.

05 April 2021 Release¶

• Adds stopword token filter for removing tokens that match the specified stop words.

19 March 2021 Release¶

• Adds additional language analyzers, token filters, and tokenizers.
• Adds support for function scores, which allows you to alter the relevance score of a document using a numeric field in the same document.

05 February 2021 Release¶

• Supports explain for $search queries.

16 January 2021 Release¶

• Fixes an issue with highlighting raising errors when combined with ObjectID equality operators.

14 January 2021 Release¶

• Improves performance of initial sync indexing.

15 December 2020 Release¶

• Adds maxNumPassages and maxCharsToExamine for Highlighting.

19 November 2020 Release¶

• Improves performance of steady state indexing.

13 November 2020 Release¶

• Fixes a bug in custom analyzers where only the first charMap character filter was being executed.

1 October 2020 Release¶

• Removes downtime requirement when rebuilding modified index definitions.

2 September 2020 Release¶

• Adds custom analyzers for index definitions and search queries.

23 August 2020 Release¶

• Adds support for wildcard path.

9 June 2020 Release¶

• Releases Atlas Search to general availability.
• Adds support for data types boolean and objectId.

18 May 2020 Release¶

• Adds a new index option to exclude the norms field, allowing a search index to ignore field length when scoring search results.
• Adds the tokenOrder option to the autocomplete operator, supporting unordered terms in search queries.
• Improves error messages to facilitate query debugging, including eliminating stack traces and other Java-specific messages.

30 April 2020 Release¶

• Adds support for geospatial queries, including:

  • A new geo data type for indexing geographic point and shape coordinates.
  • Two new operators, geoWithin and geoShape, to support queries on geospatial data, such as points and polygons.

• Adds autocomplete features to support better search-as-you-type functionality, including:

  • A new autocomplete operator and index type.
  • Analyzer-agnostic diacritic folding of field values.
  • Scoring options, such as boost and constant.
  • Compound queries that combine autocomplete with other $search operators.
  • n-grams/shingles and edge n-grams from analyzed text.