Last release of 2022 🎅

Change log

Features 🎀

#1283 - implement an ability to lookup vectors in different collection in recommendation API. Might be useful for item-to-user recommendations, where user and item embeddings are stored in a different collection with different index configuration.

#1280 - optimize shard live-cycle operations, stop optimizer faster on deletion and remove files in async task, so the API response faster, preventing timeouts even on network-mounted disks.
#1286 - Fix a list of problems, related to consensus operations, including:
- Properly handle sync transfer cancellation
- Replicas now have a local state, which is periodically synchronized with consensus. It allows to notify consensus of failed operations and cancelled transfers even if original notification was dropped due to leader failure.
- Improved validation on transfer initialization - prevent creating a transfer which involved a replica, which is already being transferred
- Fixed bug related to replica inconsistency caused by updates during transfer finish
- Improve shards transfer workflow - prevent re-try in case if transfer was cancelled externally