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Redisearch 2.10 Release Notes

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Requirements

RediSearch v2.10.25 requires:

  • Minimum Redis compatibility version (database): 7.4
  • Minimum Redis Enterprise Software version (cluster): 7.8

v2.10.25 (December 2025)

This is a maintenance release for RediSearch 2.10.

Update urgency: LOW: No need to upgrade unless there are new features you want to use.

Improvements:

  • #7157 Show background Indexing OOM warning in FT.AGGREGATE reply in RESP3.
  • #7086 Add the default text scorer as a new configuration.
  • #7380 Rename FT.PROFILE counter fields.
  • #7366 Reduce temporary memory overhead upon index load from RDB.
  • #7393 Improve timeout check for FT.AGGREGATE in cluster mode.
  • #7451 Enhance FT.PROFILE with vector search execution details.
  • #7480 Ensure full profile output on timeout with RETURN policy.

Bug Fixes:

  • #7216 Fix a concurrency issue on Reducer in FT.AGGREGATE.
  • #7259 Fix underflow in BM25STD.
  • #7278 Report used memory as unsigned long long to avoid underflows.
  • #7340 Fix a rare leak in GC.
  • #7462 Fix Fork GC potential double-free on error path.
  • #7525 Avoid draining workers thread pool from FLUSHDB callback to avoid potential deadlocks.

Full Changelog: https://github.com/RediSearch/RediSearch/compare/v2.10.24...v2.10.25

v2.10.24 (October 2025)

This is a maintenance release for RediSearch 2.10.

Update urgency: LOW: No need to upgrade unless there are new features you want to use.

Bug Fixes

  • #6960 - FT.INFO returns the wrong number of documents in OSS Cluster with replicas.
  • #6938 - Fix for the HIGHLIGHT feature, where if some fields have empty strings, wrong tokens might be highlighted.
  • #7047 - Avoid crashing in the FT.AGGREGATE command in clusters where different shards have different ON_TIMEOUT policies configured (fail vs return).

Full Changelog: https://github.com/RediSearch/RediSearch/compare/v2.10.23...v2.10.24.

v2.10.23 (September 2025)

This is a maintenance release for RediSearch 2.10.

Update urgency: HIGH : There is a critical bug that may affect a subset of users. Upgrade!

Bug fixes:

  • #6672 Fix potential file descriptor leak when OOM.
  • #6763 Fix potential deadlock during RDB loading in cases where the INFO command is sent to the server.

Full Changelog: https://github.com/RediSearch/RediSearch/compare/v2.10.22...v2.10.23

v2.10.22 (August 2025)

This is a maintenance release for RediSearch 2.10.

Update urgency: HIGH : There is a critical bug that may affect a subset of users. Upgrade!

Bug fixes:

  • #6600 FLUSHDB while active queries are still running could lead to a crash due to premature release of the CURSOR (MOD-10681).

Improvements:

  • #6664 Time measurement on FT.PROFILE using thread-independent clock mechanism (MOD-10622).
  • #6647 Response on RESP2/3 validation was inefficiently consuming excessive CPU cycles (MOD-9687).

v2.10.21 (July 2025)

This is a maintenance release for RediSearch 2.10.

Update urgency: LOW: No need to upgrade unless there are new features you want to use.

Bug fixes:

  • #6405 Validate compatibility against RedisJSON version upon open key.

Improvements:

  • #6340 Handle excessive logging when processing JSON.DEL errors.

v2.10.20 (June 2025)

This is a maintenance release for RediSearch 2.10.

Update urgency: LOW No need to upgrade unless there are new features you want to use.

Improvements:

  • #6279 Added a locking mechanism for collecting FT.INFO statistics when concurrently running the index sanitiser (MOD-10007, MOD-9761).

v2.10.19 (June 2025)

This is a maintenance release for RediSearch 2.10.

Update urgency: LOW No need to upgrade unless there are new features you want to use.

Bug fixes:

  • #6211 Some languages (like Russian) could have multiple lower and upper case matches, causing index misbehaviour (MOD-9835).

Improvements:

  • #5637 Memory allocation when converting special UTF-8 symbols requires more memory (MOD-8799).

v2.10.18 (May 2025)

This is a maintenance release for RediSearch 2.10.

Update urgency: HIGH : There is a critical bug that may affect a subset of users. Upgrade!

Bug fixes:

  • #6184 Reindexing from RDB with multiple vector indices could lead to a crash due to cluster health check - NodeWD (MOD-9220,MOD-8809)
  • #6028 FT.CURSOR...DEL while another thread is reading it could lead to a crash (MOD-9408,MOD-9432,MOD-9433,MOD-9434,MOD-9435)
  • #5967 Indexing documents using TEXT without the text in the documents leads to an inf or nan score (MOD-9423)
  • #6056 Avoid lazy expiration in background indexing for Active-Active setup preventing keys from expiring incorrectly (MOD-9486)
  • #6108 A timeout failure is returned when the ON_TIMEOUT RETURN policy is set to stop the collection of partial results - best effort (MOD-9612)

Improvements:

  • #6007 Parser for intersections on parentheses and sub-queries order won't affect full-text scores (MOD-9278)
  • #6020 Prevent access to the Redis key space when LOAD...@__key is used (MOD-9419)

v2.10.17 (April 2025)

This is a maintenance release for RediSearch 2.10.

Update urgency: HIGH : There is a critical bug that may affect a subset of users. Upgrade!

Bug fixes:

  • #5859 Last query result using FT.AGGREGATE with ON_TIMEOUT RETURN and using multi-threading could be missing (MOD-9222)
  • #5858 Collecting empty results from shards during FT.AGGREGATE with RESP3 could cause a crash (MOD-9174)

Improvements:

  • #5938 Improved performance (reduced CPU time) of collecting vector index statistics(MOD-9354)
  • #5800 Improved accuracy of index memory reporting by correcting a bug that caused negative memory counts (MOD-5904)

v2.10.15 (March 2025)

This is a maintenance release for RediSearch 2.10.

Update urgency: HIGH : There is a critical bug that may affect a subset of users. Upgrade!

Bug fixes:

  • #5788 Cursor with SORTBY is never depleted, blocking queries if the cursor limit is reached (MOD-8483)
  • #5788 Empty results with RESP3 due to the TIMEOUT, even if ON_TIMEOUT is set to RETURN(MOD-8482)
  • #5788 Cursor with RESP3 on FT.AGGREGATE is never depleted, blocking queries if cursor the limit is achieved (MOD-8515)
  • #5788 Using FT.CURSOR READ on queries that timed out led to fewer results than expected (MOD-8606)
  • #5810 The total_results field of the FT.AGGREGATE command is not correct in RESP3 (MOD-9054)

Improvements:

  • #5788 Corrected a coordinator race condition that prevented premature release, avoiding errors and inconsistencies during query executions (MOD-8794)

v2.10.14 (March 2025)

This is a maintenance release for RediSearch 2.10.

Update urgency: LOW No need to upgrade unless there are new features you want to use.

Bug fixes:

  • #5704 Weights in the query string are ignored if using SCORER BM25 (MOD-7896).

v2.10.13 (February 2025)

This is a maintenance release for RediSearch 2.10.

Update urgency: LOW No need to upgrade unless there are new features you want to use.

Bug fixes:

  • #5646 FT.SEARCH using Cyrillic characters and wildcards delivering no results (MOD-7944)

v2.10.12 (February 2025)

This is a maintenance release for RediSearch 2.10.

Update urgency: HIGH : There is a critical bug that may affect a subset of users. Upgrade!

Bug fixes:

  • #5596 Changes on the memory block reading logic could cause crash on FT.SEARCH with error "Redis 7.4.2 crashed by signal: 11, si_code: 128"

Known limitations:

  • Only the first 128 characters of string fields are normalized to lowercase during ingestion (for example, on HSET). Example:

    HSET doc __score 1.0 name "idx1S...S" mynum 1          # Assume "S...S" is a string of 252 capital S's
FT.CREATE "idx" SCHEMA "name" "TEXT" "mynum" "NUMERIC"
FT.SEARCH "idx" "@name:idx1S...S"                      # Assume "S...S" is a string of 252 capital S's

    The FT.SEARCH command will return no documents.

v2.10.11 (January 2025)

This is a maintenance release for RediSearch 2.10.

Update urgency: HIGH : There is a critical bug that may affect a subset of users. Upgrade!

Bug fixes:

  • #5536 Querying for the latest document added to the index may result in a crash if the last block is not read (MOD-8561).

v2.10.10 (January 2025)

This is a maintenance release for RediSearch 2.10

Update urgency: SECURITY: There are security fixes in the release.

Security and privacy:

  • #5459 (CVE-2024-51737) Query: potential out-of-bounds write (MOD-8486)

Bug fixes:

  • #5392 NOSTEM option does not work on query, just on tokenisation (index creation) (MOD-7634)
  • #5300 Prefix/Infix/Suffix queries longer than 1024 chars could cause a crash (MOD-7882)
  • #5294 Expired keys while background indexing could cause cross slot error when using replicaof (MOD-7949)
  • #5282 FT.CURSOR READ retrieving deleted TAG fields cause a crash (MOD-8011)
  • #5424 FT.AGGREGATE on numeric fields lead to failed_calls count increase on clustered DBs (MOD-8058)
  • #5241 Memory count on bytes_collected by the index sanitiser with missing values (MOD-8097, MOD-8114)

Improvements:

  • #5257 Optimizing index consumed memory with the creation only upon write operations (MOD-8125)

v2.10.7 (Septermber 2024)

This is a maintenance release for RediSearch 2.10

Update urgency: HIGH : There is a critical bug that may affect a subset of users. Upgrade!

Bug Fixes:

v2.10.6 (August 2024):

This is a maintenance release for RediSearch 2.10.

Update urgency: HIGH - There is a critical bug that may affect a subset of users. Upgrade!

Bug fixes:

  • #4916 - Union query, similar to "is|the", starting with 2 storwords could cause a crash (MOD-7495)
  • #4895 - FT.AGGREGATE with VERBATIM option is not handled by the shards in cluster mode (MOD-7463)
  • #4922 - Counting twice the field statistics at #search section of INFO response (MOD-7339)

v2.10 GA (v2.10.5) (July 2024)

This is the General Availability release of RediSearch 2.10

Headlines:

This latest RediSearch introduces memory-efficient vector data types, enhanced indexing capabilities with support for empty and missing fields, simplified query syntax, and expanded geospatial search features.

What's new in 2.10.5

This new major version introduces new BFLOAT16 and FLOAT16 vector data types, reducing memory consumed by vectors while preserving accuracy. This update also includes highly-requested support for indexing empty and missing values and enhances the developer experience for queries with exact matching capabilities. Developers can now match TAG fields without needing to escape special characters, making the onboarding process and use of the query syntax easier. Lastly, Geospatial search capabilities have been expanded with new INTERSECT and DISJOINT operators, and ergonomics have been improved by providing better reporting of the memory consumed by the index and exposing the full-text scoring in an aggregation pipeline.

Features:

  • Enhancing exact matching queries with TAG avoiding escaping special meaning characters using the simpler syntax '@tag:{"my-query%term"}' and NUMERIC queries:

    • #4802 - Using double quotes to wrap exact matching query terms such as @email:{"[email protected]"} in DIALECT 2 ( MOD-7299)
    • #4676, #4433 - Enhancing query parser to avoid unnecessary escaping (MOD-5756)
    • #4527 - Enhancing exact matching queries for NUMERIC using single value FT.SEARCH idx @numeric:[3456] (MOD-6623)
    • #4802 - Enabling support for single operators in NUMERIC queries such as equivalence ==, difference !=, greater than > and >= and less than < and <= as in FT.SEARCH idx '@numeric==3456' (MOD-6749)

  • Adding new keywords to support indexing empty values using INDEXEMPTY and missing values using INDEXMISSING per field in the SCHEMA while defining the index with FT.CREATE

    • #4663, #4721 - Indexing empty strings values "" for TAG and TEXT fields (MOD-6540, MOD-7200)
    • #4721 - Updating the query parser to support empty value queries for TEXT as FT.SEARCH idx '@text_field:""'or FT.SEARCH idx '""' and for TAG as in FT.SEARCH idx '@tag_field:{""}' (MOD-7200)
    • #4720, #4635 - Indexing missing values for all field types introducing the query syntax function ismissing(@field) enabling query for missing fields as in FT.SEARCH idx 'ismissing(@text)' (MOD-6532)

  • Enabling new vector data types reducing memory consumed by vectors with the new BFLOAT16 and FLOAT16

  • Exposing the full-text score values during the aggregation pipeline using ADDSCORE. When calling the scores you can use @__score in the pipeline as in FT.AGGREGATE idx 'hello' ADDSCORES SORTBY 2 @__score DESC

    • #4859 - Expose scores to FT.AGGREGATE pipeline (MOD-7190)

  • #4227 - Adding support for new operators INTERSECT and DISJOINT when querying for GEOSHAPE polygons (MOD-6178)

Bug fixes (since 2.10.4):

  • #4854 - Avoid expansion on stemming from numeric values (MOD-7025)

Improvements (since 2.10.4):

  • #4865 - Add coverage for cleaning garbage entries when indexing missing fields (MOD-7415)

{{< note >}}

  • The version inside Redis will be 2.10.5 in semantic versioning. Since the version of a module in Redis is numeric, we could not add a Release Candidate flag.
  • Minimal Redis version: 7.4
  • If indexing and querying RedisJSON data structures, this version is best combined with RedisJSON 2.8 (v2.8.2 onwards)
  • If one or more fields of a hash key expire after a query begins (using FT.SEARCH or FT.AGGREGATE), Redis does not account for these lazily expired fields. As a result, keys with expired fields may still be included in the query results, leading to potentially incorrect or inconsistent results. {{< /note >}}