v2.6.8

Release date: January 4, 2026

| Milvus Version | Python SDK Version | Node.js SDK Version | Java SDK Version | Go SDK Version | |:-------------- |:------------------|:--------------------|:-----------------|:---------------| | 2.6.8 | 2.6.6 | 2.6.9 | 2.6.11 | 2.6.1 |

We are excited to announce the release of Milvus 2.6.8! This version introduces search result highlighting, significantly enhancing the retrieval experience. Under the hood, we have optimized query processing, resource scheduling, and caching mechanisms to deliver superior performance and stability. Additionally, this release addresses critical bugs related to data security, storage handling, and concurrency. We highly recommend all users upgrade to this version for a more efficient and reliable production environment.

Features

• Supported search with highlighter. For details, refer to Text Highlighter. (#46052)

Improvements

• Moved query optimization logic to the Proxy to improve performance (#46549)
• Optimized LIKE operator performance using STL sort (#46535)
• Enabled concurrent execution of text index tasks for multiple fields (#46306)
• Supported pausing GC at the collection level (#46201)
• Implemented a penalty policy for QueryNodes to handle resource exhaustion (#46086)
• Optimized data caching by mapping multiple row groups to a single cache cell (#46542)
• Reduced CPU usage in QuotaCenter (#46615)
• Improved TIMESTAMPTZ data comparison performance (#46655)

Bug fixes

• Fixed RBAC ETCD prefix matching to prevent potential data leakage (#46708)
• Fixed incorrect root path handling for local storage mode (#46693)
• Fixed handling of mixed int64/float types in JSON fields (#46682)
• Fixed text log loading failures during cluster upgrade (#46698)
• Prevented deletion of other fields during raw data cleanup (#46689)
• Fixed failure when using highlighting with multiple analyzers (#46664)
• Ensured logs are flushed when the OS exits (#46609)
• Fixed ETCD RPC size limit exceeded error when dropping collections (#46645)