v2.5.14

## v2.5.14 (Deprecated)

Release date: July 2, 2025

| Milvus version | Python SDK version | Node.js SDK version | Java SDK version |
|----------------|--------------------|---------------------|------------------|
| 2.5.14          | 2.5.11            | 2.5.11              | 2.5.10           |

We're excited to announce Milvus 2.5.14! This release delivers a range of performance and stability enhancements, including a separate chunk cache pool, auto-indexing for JSON fields, and local caching for BM25 segment statistics. This version also resolves several critical bugs, such as a thread explosion in the file watcher and potential panics in QueryCoord, to ensure a more robust and reliable system. We encourage you to upgrade to 2.5.14 to benefit from these latest updates!

### Dependency upgrade

- Upgraded Minio to RELEASE.2024-05-28T17-19-04Z to fix a few CVEs ([#43063](https://github.com/milvus-io/milvus/pull/43063)).

### Improvements

- Added a separate chunk cache pool ([#42901](https://github.com/milvus-io/milvus/pull/42901)).
- Added support for `AUTOINDEX` on JSON fields ([#42161](https://github.com/milvus-io/milvus/pull/42161)).
- Used English name as language identifiers for all language types ([#42601](https://github.com/milvus-io/milvus/pull/42601)).
- Enabled running an analyzer by a collection field ([#42812](https://github.com/milvus-io/milvus/pull/42812)).
- Updated the Knowhere version ([#42939](https://github.com/milvus-io/milvus/pull/42939)).
- Added a size interface to the file reader to eliminate `statobject` calls during reads ([#42911](https://github.com/milvus-io/milvus/pull/42911)).
- Introduced a local cache for BM25 segment statistics ([#42924](https://github.com/milvus-io/milvus/pull/42924), [#42646](https://github.com/milvus-io/milvus/pull/42646)).
- Filled in `dbname` for `operateprivilegev2request` in the interceptor ([#42904](https://github.com/milvus-io/milvus/pull/42904)).
- Avoided modifying field metadata when renaming a collection or database ([#42876](https://github.com/milvus-io/milvus/pull/42876)).
- Made the Web UI toggleable via configuration ([#42815](https://github.com/milvus-io/milvus/pull/42815)).
- Avoided using the thread pool when a column is ready in the chunk cache ([#42804](https://github.com/milvus-io/milvus/pull/42804)).
- Enabled the Tantivy collector to set bitset directly ([#39748](https://github.com/milvus-io/milvus/pull/39748), [#42881](https://github.com/milvus-io/milvus/pull/42881)).
- Replaced pointer-based map keys with IDs in the garbage collector ([#42654](https://github.com/milvus-io/milvus/pull/42654)).
- Optimized memory usage during garbage collection ([#42631](https://github.com/milvus-io/milvus/pull/42631)).
- Added support for printing NQ and parameters for search and query logs ([#42545](https://github.com/milvus-io/milvus/pull/42545)).
- Handled nullable and default values correctly during bulk insert ([#42072](https://github.com/milvus-io/milvus/pull/42072)).
- Set thread names for the Segcore thread pool ([#42596](https://github.com/milvus-io/milvus/pull/42596)).

### Bug fixes

- Pre-allocated sufficient IDs during data import to avoid failures ([#42935](https://github.com/milvus-io/milvus/pull/42935)).
- Updated Tantivy to fix a thread explosion in the file watcher ([#42828](https://github.com/milvus-io/milvus/pull/42828), [#42713](https://github.com/milvus-io/milvus/pull/42713)).
- Fixed an issue where filtered data became invisible under TTL ([#42944](https://github.com/milvus-io/milvus/pull/42944)).
- Removed cached null expression results to prevent incorrect filtering ([#42783](https://github.com/milvus-io/milvus/pull/42783)).
- Rejected division or modulo by zero in binary arithmetic expressions ([#42887](https://github.com/milvus-io/milvus/pull/42887)).
- Ensured the flow graph frees function resources after all nodes are closed ([#42775](https://github.com/milvus-io/milvus/pull/42775)).
- Fixed an issue where DataCoord could get stuck during an upgrade from v2.5 to v2.6 ([#42669](https://github.com/milvus-io/milvus/pull/42669)).
- Added a pre-check to prevent unsupported data type casting ([#42678](https://github.com/milvus-io/milvus/pull/42678)).
- Added concurrency and close protection for the BM25 function ([#42599](https://github.com/milvus-io/milvus/pull/42599)).
- Filtered out streaming query nodes from the resource group during upgrades ([#42594](https://github.com/milvus-io/milvus/pull/42594)).
- Fixed an issue with `is_not_in` expressions for the Trie index ([#42886](https://github.com/milvus-io/milvus/pull/42886)).
- Fixed an issue preventing Rocksmq from stopping gracefully ([#42843](https://github.com/milvus-io/milvus/pull/42843)).
- Corrected pruning optimization for `OR` logical expressions to only prune if child nodes are prunable ([#42915](https://github.com/milvus-io/milvus/pull/42915)).
- Fixed a QueryCoord panic caused by the controller not waiting for the checker to finish ([#42726](https://github.com/milvus-io/milvus/pull/42726)).
- Fixed an issue where small segments missed primary key sorting tasks due to being incorrectly marked as indexed ([#42615](https://github.com/milvus-io/milvus/pull/42615)).
- Reduced total DataNode task concurrency in Standalone mode to prevent OOM errors ([#42809](https://github.com/milvus-io/milvus/pull/42809)).
- Provided explicit errors for arithmetic operations on unsupported types ([#42890](https://github.com/milvus-io/milvus/pull/42890)).