v2.4.12

## v2.4.12

Release Date: September 26, 2024

| Milvus version | Python SDK version | Java SDK version | Node.js SDK version |
|----------------|--------------------|------------------|---------------------|
| 2.4.12         | 2.4.7              | 2.4.4            | 2.4.9               |

Milvus 2.4.12 introduces significant enhancements and critical bug fixes. This release addresses data duplication issues and improves failure recovery speed, particularly when handling large numbers of deletions. However, a known issue persists where failure recovery can be slow when deleting massive amounts of data. We are actively working on resolving this issue.

### Improvements

- Implemented graceful stop for flowgraph manager ([#36358](https://github.com/milvus-io/milvus/pull/36358))
- Disabled index checks for non-loaded vector fields ([#36280](https://github.com/milvus-io/milvus/pull/36280))
- Filtered out non-hit delete records during delta loading ([#36272](https://github.com/milvus-io/milvus/pull/36272))
- Improved error handling for std::stoi exceptions ([#36296](https://github.com/milvus-io/milvus/pull/36296))
- Disallowed keywords as field names or dynamic field names ([#36108](https://github.com/milvus-io/milvus/pull/36108))
- Added metrics for delete entries in L0 segments ([#36227](https://github.com/milvus-io/milvus/pull/36227))
- Implemented L0 forward policy to support remote loading ([#36208](https://github.com/milvus-io/milvus/pull/36208))
- Added ANN field loading check in proxy ([#36194](https://github.com/milvus-io/milvus/pull/36194))
- Enabled empty sparse row support ([#36061](https://github.com/milvus-io/milvus/pull/36061))
- Fixed a security vulnerability ([#36156](https://github.com/milvus-io/milvus/pull/36156))
- Implemented stats handler for request/response size metrics ([#36118](https://github.com/milvus-io/milvus/pull/36118))
- Corrected size estimation for encoded array data ([#36379](https://github.com/milvus-io/milvus/pull/36379))

### Bug fixes

- Resolved metric type errors for collections with two vector fields ([#36473](https://github.com/milvus-io/milvus/pull/36473))
- Fixed long buffering issues causing message queue reception failures ([#36425](https://github.com/milvus-io/milvus/pull/36425))
- Implemented proper compact-to-segments return after split support ([#36429](https://github.com/milvus-io/milvus/pull/36429))
- Resolved data race issues with node ID check goroutine ([#36377](https://github.com/milvus-io/milvus/pull/36377))
- Removed element type check ([#36324](https://github.com/milvus-io/milvus/pull/36324))
- Fixed concurrent access issues for growing and sealed segments ([#36288](https://github.com/milvus-io/milvus/pull/36288))
- Implemented future stateful lock ([#36333](https://github.com/milvus-io/milvus/pull/36333))
- Corrected offset usage in HybridSearch ([#36287](https://github.com/milvus-io/milvus/pull/36287), [#36253](https://github.com/milvus-io/milvus/pull/36253))
- Resolved dirty segment/channel leaks on QueryNode ([#36259](https://github.com/milvus-io/milvus/pull/36259))
- Fixed primary key duplication handling ([#36274](https://github.com/milvus-io/milvus/pull/36274))
- Enforced metric type setting in search requests ([#36279](https://github.com/milvus-io/milvus/pull/36279))
- Fixed stored_index_files_size metric clearing issue ([#36161](https://github.com/milvus-io/milvus/pull/36161))
- Corrected readwrite privilege group behavior for global API access ([#36145](https://github.com/milvus-io/milvus/pull/36145))