milvus-1.1.0

Release date：2021-05-07

Compatibility

Milvus version	Python SDK version	Java SDK version	Go SDK version
1.1.0	1.1.0	1.1.0	1.1.0

New Features

• #4564 Supports specifying partition in a get_entity_by_id() method call.
• #4806 Supports specifying partition in a delete_entity_by_id() method call.
• #4905 Adds the release_collection() method, which unloads a specific collection from cache.

Improvements

• #4756 Improves the performance of the get_entity_by_id() method call.
• #4856 Upgrades hnswlib to v0.5.0.
• #4958 Improves the performance of IVF index training.

Fixed issues

• #4778 Fails to access vector index in Mishards.
• #4797 The system returns false results after merging search requests with different topK parameters.
• #4838 The server does not respond immediately to an index building request on an empty collection.
• #4858 For GPU-enabled Milvus, the system crashes on a search request with a large topK (> 2048).
• #4862 A read-only node merges segments during startup.
• #4894 The capacity of a Bloom filter does not equal to the row count of the segment it belongs to.
• #4908 The GPU cache is not cleaned up after a collection is dropped.
• #4933 It takes a long while for the system to build index for a small segment.
• #4952 Fails to set timezone as "UTC + 5:30".
• #5008 The system crashes randomly during continuous, concurrent delete, insert, and search operations.
• #5010 For GPU-enabled Milvus, query fails on IVF_PQ if nbits ≠ 8.
• #5050 get_collection_stats() returns false index type for segments still in the process of index building.
• #5063 The system crashes when an empty segment is flushed.
• #5078 For GPU-enabled Milvus, the system crashes when creating an IVF index on vectors of 2048, 4096, or 8192 dimensions.

Many thanks to @BossZou @shengjun1985 @op-hunter @matrixji @yhmo @ericsyh @LocoRichard @del-zhenwu @XuanYang-cn @fishpenguin

A special thank to Chris from yinxiang.com

milvus-1.0.0

Release date：2021-03-09

Compatibility

Milvus version	Python SDK version	Java SDK version	Go SDK version
1.0.0	1.0.1	1.0.0	1.0.0

New Features

• Supports writing log to stdout. #3977

Improvements

• Reduces the package size of grpc-milvus for the C++ SDK. #4754

Fixed issues

• Memory leaks during indexing or querying operations. #4749, #4757, #4765, #4766

milvus-0.10.6

Release date：2021-02-23

Compatibility

Milvus version	Python SDK version	Java SDK version	Go SDK version
0.10.6	0.4.0	0.8.6	0.4.6

Compatibility changes

• Adds an optional argument nbits to the create_index() method for the IVF_PQ index. #3920

For more information about setting IVF_PQ parameters, see Vector index.

Improvements

• Improves the FLAT search performance on binary vectors using the AVX2 instruction set.#1970
• Adds an optional parameter nbits to the create_index() method for the IVF_PQ index. #3920
• Supports configuring Prometheus labels cluster_label and instance_label under metric.#4614

Fixed issues

• The system returns a -0 distance, if metric type is tanimoto.#4683
• A FLAT search on binary vectors causes the server to crash, if the dimension of the vectors is not multiple of 2.#4678
• The GPU cache holds more data than specified.#4719

See CHANGELOG for more information.

milvus-0.10.5

Release date：2021-01-07

Compatibility

Milvus version	Python SDK version	Java SDK version	Go SDK version
0.10.5	0.2.15	0.8.6	0.4.5

Compatibility changes

• The load_collection() method supports preloading specified partitions. #4307

Improvements

• Optimizes the process of indexing and querying. #4454

Fixed issues

• Calling load_collection() and search() in multiple threads causes Milvus to hang. #4378
• Milvus only searches the default partition if the search parameter partition_tags contains _default. #4484

See CHANGELOG for more information.

milvus-0.10.4

Release date：2020-12-03

Compatibility

Milvus version	Python SDK version	Java SDK version	Go SDK version
0.10.4	0.2.14	0.8.5	0.4.4

Improvements

• Improves the query performance in situations where no entities are deleted. #3775
• Reduces the time to create a large number of partitions. #4318

Fixed issues

• The server crashes when searching with IVF_PQ on GPU. #3626
• The performance of query on IVF_SQ8H worsens. #3903
• The server crashes when deleting entities. #3906
• The server occasionally hangs when creating and dropping partitions continuously. #4012
• An out-of-memory error occurs when searching on GPU. #4174
• Memory leaks when building an IVF index. #4318

See CHANGELOG for more information.

milvus-0.10.3

Release date：2020-9-21

Compatibility

Milvus version	Python SDK version	Java SDK version	Go SDK version
0.10.3	0.2.14	0.8.4	0.4.4

Improvements

• Allows the user to specify metric_type when searching in a collection with FLAT index. #3213
• Adds more valid values to the indexing parameter m of IVF_PQ: An m is valid so long as it can be divided by dim, the number of vector dimensions. #3254
• Expands the range of nprobe to [1, 16384] for all IVF indexes. #3606
• Expands the range of top_k in an embeddings search to [1, 16384]. #3639
• Optimizes the memory release strategy to avoid memory overuse. #3536

Fixed issues

• Milvus running on multiple GPU devices and using IVF_SQ8H crashes if GPU cache is set too low. #3742
• Milvus reports a CUDA error when quitting, if the index is IVF_SQ8H. #3760

See CHANGELOG for more information.

milvus-0.10.2

Release date：2020-8-15

Compatibility

Milvus version	Python SDK version	Java SDK version	Go SDK version
0.10.2	0.2.14	0.8.4	0.4.4

Improvements

• Improved IVF search performance when both nq and nprobe are large. #2653

Fixed issues

• Inaccurate calculation of the memory allocated for index files. #2890
• Search result sets based on IVF_PQ index with IP metric are incorrectly merged in situations where multiple segments are produced for the inserted data. #2952
• The server crashes if you set cache.cache_size smaller than the size of an index file in a multi-GPU scenario. #3012
• Search result sets based on IP metric are incorrectly merged, if you insert vectors to multiple partitions in Mishards. #3133

See CHANGELOG for more information.

milvus-0.10.1

Release date：2020-7-20

Compatibility

Milvus version	Python SDK version	Java SDK version	Go SDK version
0.10.1	0.2.14	0.8.3	0.4.3

Fixed issues

• Occasionally, the result count does not match the query count. #2578
• IVF_PQ does not support IP on GPU-enabled Milvus. #2585
• Milvus reports "illegal instruction" when running on some legacy CPUs. #2598
• Updated the range of HNSW settings. #2637
• Milvus processes crash when building an index. #2642
• The default ANNOY settings do not match the settings specified in the document. #2649
• Milvus does not respond under a stress test. #2692
• The precision of the returned vectors is incorrect in an HTTP interface. #2752
• The upper limit of nprobe is incorrect on the GPU-enabled Milvus. #2767
• The number of the vectors changes occasionally after building an index. #2768

See CHANGELOG for more information.

milvus-0.8.1

Release date：2020-6-22

Compatibility

Milvus version	Python SDK version	Java SDK version	Go SDK version
0.8.1	0.2.10	0.7.0	0.3.0

Fixed issues

• Index files are missing after a compact operation. #1997
• Too many files are opened when metric_config.enable_monitor is set to true. #2264
• The server hangs when multiple clients query different collections at the same time. #2266
• nlist set by the user may not take effect. #2399
• Deleted vectors are still found in GPU-enabled Milvus. #2450

See CHANGELOG for more information.

milvus-0.10.0

Release date：2020-6-15

Compatibility

Milvus version	Python SDK version	Java SDK version	Go SDK version
0.10.0	0.2.13	0.8.2	0.4.2

Compatibility changes

• Updates the Milvus configuration file. #2510

Improvements

• Optimizes the index building performance when many small segments exist. #2373
• FAISS is upgraded to 1.6.3. #2381
• Optimizes dropping collection performance when too many partitions exist. #2394
• Optimizes the implementation of k-selection algorithm for GPU-enabled Milvus. #2466

Fixed issues

• The search performance degrades on Milvus 0.9.1. #2429

See CHANGELOG for more information.