Features
| estimated deliver release | Urgency | Importance | Workload(month*person) | Details | |
|---|---|---|---|---|---|
| SQL Support | 2.4 Beta, 3.0 release | 4 | 5 | 12 | Support mysql connector, with insert, delete, search, aggregate, ddl support |
| Velox execution engine | 2.3/2.4 | 4 | 4 | 6 | Use velox to execute TableScan, Predicate, aggregation operators |
| MMap data management | 2.4 | 3 | 4 | 3+ | Load data into disk and mmap for searching. Let Milvus to serve data large than memory |
| Hybrid search with BM25 and vector | 3.0 or later | 2 | 4 | 6+ | Search jointedly with bm25 score and vector distance score |
| Dynamic schema change | 3.0 | 4 | 5 | 6+ | Add, remove column |
| Distributed Log store | 3.0 or later | 2 | 3 | 6+ | Implement distributed log device to replace kafka/pulsar for faster speed and recovery |
| Add Log Node and remove datanode | 3.0 | 2 | 3 | 3+ | Add log node to handle write/flush, datanode will merge with indexnode and only handle stateless jobs |
| Dynamic shard change | 3.0 or later | 2 | 2 | 3+ | Change collection shard number in flight |
| Change data capture | 2.3/2.4 | 3 | 3 | 3+ | export inserted data to kafka and datawarehouse |
| Cluster level replication | 2.4 | 4 | 4 | 3+ | replicate data between two clusters for cross datacenter failure recovery |
| PITR | 3.0 or later | 1 | 2 | 3+ | replay backup at any time |
| New persistent format | 2.3 | 4 | 5 | 3+ | Change bin log data format to improve search and recovery speed. |
| Ranking Support | 3.0 or later | 1 | 2 | 3+ | Support complex ranking between scalar and vector score with machine learning model |
| Primary key dedup | 3.0 | 4 | 4 | 3+ | Dedup or overwrite when user write same primary key |
| Aggregation | 2.3 | 5 | 4 | 3 | Support count/groupby with where condition |
| Complex data type | 3.0 | 2 | 4 | 3 | Support list, set, json datatype and there queries such as IN |
| GPU | 2.4/3.0 | 3 | 5 | 3 | Support GPU based faiss and graph index |
| Multi vector support | 3.0 or later | 1 | 1 | 3 | Need more user scenario |
| Condition delete | 3.0 | 1 | 4 | 3 | Delete from xxx where nonPK = ?? |
| Fp16/Bf16 support | 3.0 | 2 | 4 | 1+ | Support BF16 and Fp16 could improve search latency and throught to 2X |
| Snapshot/Rollback | 3.0 or later | 1 | 1 | 3+ | Snapshot is cool, but it's not as urgent for now |
| Support Quantization for graph index | 2.4 | 4 | 4 | 1+ | HNSW + PQ/SQ, NGT-PG |
| Auto Index 2.0 | 3.0 | 1 | 3 | 3+ | Smart index parameter tuning |
| Support Models in Milvus | 3.0 or later | 1 | 4 | 6+ | Support onnx models to do ranking and other models such as PCA |
| Data iterator | 2.4 | 5 | 4 | 3 | Iterate through all data with condition in the collection |
| Spark Connector | 3.0 | 3 | 3 | 3 | Combine spark to work with milvus together on offline processing |
| ScaNN Support | 2.3 | 4 | 4 | 1+ | Support scaNN in knowhere |
| Hedged Read | 2.4 | 4 | 3 | 1+ | when collection enable multiple replicas, hedged read helps to improve availability and reduce tail latency |
| Binary vector support | 3.0 | 2 | 4 | 1+ | Support binary vector in graph index |
| Support null data | 2.4 | 2 | 4 | 3+ | Support data to be null |
Knowhere/Segcore metrics | 2.4 | 5 | 5 | 3 | Support prometheus based metrics collection |
| Vector as output field | 2.4 | 3 | 4 | 1+ | Support to retrieve vector field when search |
| Bulkload with clustering data | 2.4 | 2 | 4 | 3 | Support clustering data into segment before bulkload |
| Multi Vector | 3.0 | 3 | 3 | 3 | Support multiple vector field in single entity |
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