Change log

Features 🧀

#2796, #3124 - Add support for sparse vectors, also supporting SPLADE and BM25 datasets (docs)
#2790 - Add discovery search, explore and discover vectors in a defined context (docs)
#2807 - Add user defined sharding, partition data with a custom sharding distribution (docs)
#2432 - Add shard snapshot transfer, fast transfer of shards using snapshots including their index and quantized data (docs)
#3079 - Add Manhattan distance metric
#2979 - Add support for read-only API key (docs)

#2869 - Improve quality of HNSW index building on high CPU systems
#2768 - Add index for geo map payloads to improve search performance
#3013, #3026, #2942, #3103, #3054 - Improve stability of consensus on big high load clusters
#2931 - Improve search tail latencies with many parallel searches on high CPU systems
#2748, #2771 - Allow to configure the timeout for searches
#3067 - Improve group by performance by fetching vectors only once
#3076 - Improve group by performance by handling with_payloads more efficiently
#2803 - Improve performance for empty match-any filters
#3088 - Randomize shard placement to roughly get an even spread across all peers
#3155 - Make indexed_only more lenient
#3084 - Improve /readyz health check, only mark as ready when started node has caught up
#2855 - Add support for using API key with HTTP Bearer authentication
#2848 - Expose update rate limiter parameter in configuration
#3169 - Show actual bind address instead of localhost for Web UI in greeting message
#2846 - Clean up recovered snapshots from an URL instead of leaving them behind
#3036 - Clean up old RocksDB files more often to save disk space
#3054 - Improve WAL performance by implementing a faster checksum algorithm

#2933, #3039 - Fix potential divide by zero panic in numeric and geo index
#2888 - Fix panic if gRPC request has multiple validation errors
#3034 - Fix overvalidation on vector names in internal requests
#2904 - Fix best_score formula with just negative examples
#2927 - Fix duplicate numeric index entry for empty payload
#2969 - Fix potentially syncing local consensus state when there are still pending commits
#2895 - Fix custom TLS certificate not working when recovering snapshots from URL
#3093 - Fix panic when loading from RocksDB with corrupted tail
#3105 - Fix hard error for missing column family not found when flushing data
#3156 - Fix shard transfers potentially starting too early
#2960 - Fix potential memory overallocation in vector storage
#3079 - Fix binary quantization for euclidean distance
#2864 - Fix bad recall performance on payload indexes
#3174 - Fix response codes being too strict, breaking snapshot creation in Python client
#3073 - Fix NO_COLOR not having an effect on output logs
#3086 - Fix migration from local to distributed on systems with 1 or 2 CPU cores
#2921 - Fix storage and snapshot directory permission errors with Qdrant Docker image

#2785 - Mark point, vector and index counts as approximate, we may eventually remove these