v2.3.16

## v2.3.16

Release date: May 24, 2024

| Milvus version | Python SDK version | Java SDK version | Go SDK version | Node.js SDK version |
|----------------|--------------------|------------------|----------------|---------------------|
| 2.3.16         | 2.3.7              | 2.3.6            | 2.3.6          | 2.3.5               |


Milvus v2.3.16 focuses on stability, performance, and security. It includes bug fixes for auto-balancing, checkpoint handling, memory leaks, and transaction limits. Additionally, authentication for the REST v2 API has been strengthened, and query result retrieval has been optimized. Overall, this update aims to provide a more reliable, efficient, and secure platform for your needs.

## Improvements

- Enhanced authentication for the REST v2 API.([#33254](https://github.com/milvus-io/milvus/pull/33254))
- Improved checkpoint handling for message failures.([#33159](https://github.com/milvus-io/milvus/pull/33159))([#33128](https://github.com/milvus-io/milvus/pull/33128))
- Improved the triggering mechanism for segment sync tasks so that it will only be triggered once by flushts ([#33034](https://github.com/milvus-io/milvus/pull/33034))
- Improved the query result retrieval mechanism to get enough query results ([#33177](https://github.com/milvus-io/milvus/pull/33177))

## Bug fixes

- Fixed a bug that when suspending auto balance querynode will unexpectedly exit stopping balance  ([#32941](https://github.com/milvus-io/milvus/pull/32941))
- Resolved an issue leading to endless binlog path downloads during compaction ([#33246](https://github.com/milvus-io/milvus/pull/33246))
- Addressed memory leaks in rendezvousflushmanager ([#33112](https://github.com/milvus-io/milvus/pull/33112))
- Prevented system panics related to nil array field data ([#33119](https://github.com/milvus-io/milvus/pull/33119))
- Fixed "SegmentNotLoaded" errors triggered by concurrent segment tasks in search ([#33087](https://github.com/milvus-io/milvus/pull/33087))
- Fixed a bug that Etcd txn exceeds limit due to too many fields  ([#33049](https://github.com/milvus-io/milvus/pull/33049))
- Fixed a bug related to the incorrect calculation of the milvus_rootcoord_indexed_entity_num metric ([#33002](https://github.com/milvus-io/milvus/pull/33002))