Pymilvus

**Release date**：2021-08-16
Compatible with Milvus v2.x

Fixed bugs:
- Remove a mistake check in search future (608)
- Fix the parameter timeout of load_collection API not working problem (620)
- Fix the logic of retry for RPC calling (622)

Enhancements:
- Add a check of parameter anns_field in search (609)
- Add a check of parameter search_data in search (610)
- Add a check of parameter output_fields in search (613)
- Set the default metric of calc_distance API (616)
- Provide more info when create index failed (618)
- Support output binary vector in query API (623)

Release date：2021-07-12
Compatible with Milvus 2.X

Fixed bugs:

When search parameter `limit` is 0, it should return a meaningful error message (583)
The callback of insert dose not take effect (587)
Error message does not specify the reason accurately when search using vector with not matched dim (592)
Fix float vector result handler crashed when `dim` not set (603)

1. Compatibility

PyMilvus 2.x **only supports** Milvus 2.x and is **not compatible** with Milvus 1.x.

See [Milvus v2.0.0-RC1 Release Notes](https://milvus.io/docs/v2.0.0/release_notes.md)

2. Breaking changes

Following are changes on PyMilvus APIs in **v2.0.0rc1**.

- **The package name is changed to `pymilvus`**, which means the former statement `from milvus import Milvus` is no longer valid. Please change it to the following statement.

python
from pymilvus import Milvus


- `Milvus v2.0.0-RC1` does not support delete, so **all the APIs about delete are not supported in this release**.

- `get_entity_by_id()` is replaced by `query()`.

3. Miscellaneous

These APIs have some changes: `get_collection_stats()` , `create_index()`.

These APIs are removed: `get_collection_info()`, `count_entities()`, `compact()`, `delete_entity_by_id()`, `get_entity_by_id()`, `reload_segments()`, `list_id_in_segment()`, `get_index_info()`, `search_in_segment()`, `get_config()`, `set_config()`.

These APIs are new in PyMilvus v2.0.0rc1: `describe_collection()`, `load_partitions()`, `release_partitions()`, `describe_index()`, `get_partition_stats()`, `search_with_expression()`, `query()`.

Release date：2021-06-09
Compatible with Milvus v1.1.x

Fixed bugs:
Fix Pymilvus connection timeout bug( 545 539 )

Release date：2021-05-28
Compatible with Milvus v1.1.x

Fixed bugs:
Control required version for grpcio and grpcio-tools (522)

Enhancements:
Update OWNER file

**Release date**：2021-04-29
Compatible with Milvus v1.1.x

Fixed bugs:
- Force using http/https scheme with http-handler(\497)

Enhancements:
- Bump jinja2 pygments and py(\498)
- Complete all tests( \295)
- Remove Numpy in require packages (\456)

API updating(\484):
- updating `get_entity_by_id` and `delete_entity_by_id`, add new parameter "partition_tag"
- new api `release_collection`