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.

milvus-0.9.1

Release date：2020-5-29

Compatibility

Milvus version	Python SDK version	Java SDK version	Go SDK version
0.9.1	0.2.12	0.8.1	0.4.1

Fixed issues

• In a multi-partition situation, data is inserted twice after the server reboots. #2378
• A cudaMalloc failure occurs with GPU IVF index when nq (number of queries) is high. #2395.
• Deleted vectors are still found in GPU-enabled Milvus. #2450

See CHANGELOG for more information.

milvus-0.9.0

Release date：2020-5-15

Compatibility

Milvus version	Python SDK version	Java SDK version	Go SDK version
0.9.0	0.2.11	0.8.0	0.4.0

New features

• Checks the CPU instruction set, GPU driver version, and CUDA version, when Milvus starts up. #2054 #2111
• Prevents multiple Milvus instances from accessing the same Milvus database at the same time. #2059
• Supports log file rotating. #2206
• Suspends index building when a search request comes in. #2283

Improvements

• Refactors log output. #221
• Upgrades OpenBLAS to improve Milvus' performance. #1796
• Unifies the vector distance calculation algorithms among FAISS, NSG, HNSW, and ANNOY. #1965
• Supports SSE4.2 instruction set. #2039
• Refactors the configuration files. #2149 #2167
• Uses Elkan K-means algorithm to improve the IVF index performance. #2178

Fixed issues

See CHANGELOG for more information.

API changes

Added methods

C++	Python	Java	Go
HasPartition	has_partition	hasPartition	HasPartition

Changed methods

	C++	Python	Java	Go
Earlier than v0.9.0	DescribeCollection	describe_collection	describeCollection	DescribeCollection
v0.9.0	GetCollectionInfo	get_collection_info	getCollectionInfo	GetCollectionInfo

	C++	Python	Java	Go
Earlier than v0.9.0	CountCollection	count_collection	getCollectionRowCount	CountCollection
v0.9.0	CountEntities	count_entities	countEntities	CountEntities

	C++	Python	Java	Go
Earlier than v0.9.0	ShowCollections	show_collections	showCollections	ShowCollections
v0.9.0	ListCollections	list_collections	listCollections	ListCollections

	C++	Python	Java	Go
Earlier than v0.9.0	ShowCollectionInfo	collection_info	showCollectionInfo	ShowCollectionInfo
v0.9.0	GetCollectionStats	get_collection_stats	getCollectionStats	GetCollectionStats

	C++	Python	Java	Go
Earlier than v0.9.0	DescribeIndex	describe_index	describeIndex	DescribeIndex
v0.9.0	GetIndexInfo	get_index_info	getIndexInfo	GetIndexInfo

	C++	Python	Java	Go
Earlier than v0.9.0	ShowPartitions	show_partitions	showPartitions	ShowPartitions
v0.9.0	ListPartitions	list_partitions	listPartitions	ListPartitions

	C++	Python	Java	Go
Earlier than v0.9.0	GetEntitiesByID	get_vectors_by_ids	getVectorsByIds	GetVectorsByID
v0.9.0	GetEntityByID	get_entity_by_id	getEntityByID	GetEntityByID

	C++	Python	Java	Go
Earlier than v0.9.0	GetIDsInSegment	get_vector_ids	getVectorIds	GetEntityIDs
v0.9.0	ListIDInSegment	list_id_in_segment	listIDInSegment	ListIDInSegment

	C++	Python	Java	Go
Earlier than v0.9.0	N/A	search_in_files	searchInFiles	N/A
v0.9.0	N/A	search_in_segment	DELETED	N/A

	C++	Python	Java	Go
Earlier than v0.9.0	DeleteByID	delete_by_id	deleteByIds	DeleteByID
v0.9.0	DeleteEntityByID	delete_entity_by_id	deleteEntityByID	DeleteEntityByID

	C++	Python	Java	Go
Earlier than v0.9.0	PreloadCollection	preload_collection	preloadCollection	PreloadCollection
v0.9.0	LoadCollection	load_collection	loadCollection	LoadCollection

	C++	Python	Java	Go
Earlier than v0.9.0	FlushCollection and Flush	flush	flush and flushAsync	Flush
v0.9.0	Flush	UNCHANGED	UNCHANGED	UNCHANGED

	C++	Python	Java	Go
Earlier than v0.9.0	CompactCollection and Compact	compact	compact and compactAsync	Compact
v0.9.0	Compact	UNCHANGED	UNCHANGED	UNCHANGED

	C++	Python	Java	Go
Earlier than v0.9.0	Connect	connect	connect	Connect
v0.9.0	UNCHANGED	DELETED	UNCHANGED	UNCHANGED

	C++	Python	Java	Go
Earlier than v0.9.0	Connected	connected	isConnected	IsConnected
v0.9.0	UNCHANGED	DELETED	UNCHANGED	UNCHANGED

	C++	Python	Java	Go
Earlier than v0.9.0	Disconnect	disconnect	disconnect	Disconnect
v0.9.0	UNCHANGED	DELETED	UNCHANGED	UNCHANGED

milvus-0.8.0

Compatibility

Milvus version	Python SDK version	Java SDK version	Go SDK version
0.8.0	0.2.10	0.7.0	0.3.0

New features

• ANNOY index support

  Added support for ANNOY index type. Refer to our documentation for more information. #261

• Vector deletion

  Added support to delete one or multiple vectors for more index types. #1655 #1660 #1661 #1849

  Including: Flat/IVFlat/IVFPQ/IVFSQ8/IVFSQ8H/NSG/HNSW/ANNOY

Enhancements

• Added new metric SuperStructure and SubStructure in HTTP module. #1784

Bug fixes

• Limited the maximum number of partitions to 4096. #1276
• Forbidden to create partition with name _default. #1762
• Resolved the issue that concurrent operations from multiple clients cause system crash. #1789
• Resolved the issue that some raw vectors are missed when the raw data file size is larger than 2GB. #1883