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Weaviate 1.39.4 adds node-level query admission control and fixes HNSW dropping isolated nodes during compaction
The 2026-09-11 patch ships node-level query admission control (PR #12078) as its one new feature in a release whose notes list "New Features: none", alongside a fix preserving isolated nodes during HNSW compaction (#13033) and recovery of orphaned postings through reassign-all (#13035). It also bounds-checks read repair on replicas, barriers a new Raft leader's FSM before it judges proposals, and creates queue chunk files with `O_EXCL` to stop same-microsecond name collisions. A separate PR adds a Weaviate license and license switch.
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