v2.5.19

## v2.5.19

Release date: October 22, 2025

| Milvus version | Python SDK version | Node.js SDK version | Java SDK version |
|----------------|--------------------|---------------------|------------------|
| 2.5.19          | 2.5.16            | 2.5.13              | 2.5.14           |

We are excited to announce Milvus 2.5.19! This release includes important performance optimizations, updates to Go and Arrow/Go versions, and enhanced support for hybrid search requery policies and granular flush targets. Several bug fixes also improve stability. We recommend upgrading to Milvus 2.5.19 to benefit from these improvements.

### Improvements

- bump go verion to 1.24.6 ([#44718](https://github.com/milvus-io/milvus/pull/44718))
- Bump Arrow/Go to v17 ([#44663](https://github.com/milvus-io/milvus/pull/44663))
- Ensure accesslog.$consistency_level represents the actual value used ([#44708](https://github.com/milvus-io/milvus/pull/44708))
- Refactor balance checker using priority queue ([#44588](https://github.com/milvus-io/milvus/pull/44588))
- Add support for granular flush targets in flushall operation ([#44431](https://github.com/milvus-io/milvus/pull/44431))
- Add configuration for hybrid search requery policy via `common.requery.hybridSearchPolicy` ([#44467](https://github.com/milvus-io/milvus/pull/44467))
- Optimize binary_search_string performance ([#44470](https://github.com/milvus-io/milvus/pull/44470))

### Bug fixes

- Fix duplicate L0 segment load task generation during channel balancing ([#44700](https://github.com/milvus-io/milvus/pull/44700))
- Skip empty loop when processing growing segments ([#44608](https://github.com/milvus-io/milvus/pull/44608))
- Fix bulk import issue with auto ID ([#44601](https://github.com/milvus-io/milvus/pull/44601))
- Clean up collection metrics after dropping on RootCoord  ([#44525](https://github.com/milvus-io/milvus/pull/44525))
- Fix incorrect local path usage in IDF Oracle ([#44328](https://github.com/milvus-io/milvus/pull/44328))