v12.0.0-beta.16

What's Changed

Breaking Changes 🛠

• feat: make data file parts serializable by @Xuanwo in #9072

New Features 🎉

• fix(mem-wal): resolve writer shard spec identity by @u70b3 in #8112
• feat(java): expose merge insert write mode by @zhangyue19921010 in #8918
• feat(index): proportional hierarchical k-means for IVF training by @BubbleCal in #9050
• feat: expose public accessor for the fragment reuse index by @brendanclement in #9112

Bug Fixes 🐛

• fix(python): correct the misspelled materialize_deletions_threshold option by @jonasdedden in #8487
• fix(python): declare CompactionOptions with total=False by @jonasdedden in #8488
• fix(python): let create_index_uncommitted accept an IndexConfig by @jonasdedden in #8490
• fix: reject lossy null structs in v2.0 by @app/lance-gatefixer in #8507
• fix: preserve typed DataFusion errors through Shared and ReplayExec by @app/copilot-swe-agent in #8677
• fix(mem_wal): run grace eviction on its own task, not the flush handler's ticker by @xuanyu-z in #9022
• fix(cache): bypass Moka single-flight for zero-capacity caches by @jiaqizho in #9038
• fix(index): keep every HNSW node reachable after a parallel build by @BubbleCal in #9053
• fix(fts): preserve prewarmed state across request store wrappers by @BubbleCal in #9075
• fix: stamp overlay row lineage at commit by @app/lance-gatefixer in #9084

Documentation 📚

• docs: add Apache Doris integration by @Gabriel39 in #8983

Performance Improvements 🚀

• perf(fts): defer decoding for underfilled conjunctions by @BubbleCal in #9031
• perf(fts): reuse resident statistics and prepared scorers by @BubbleCal in #9032
• perf(index): read IVF prewarm in parallel byte windows by @BubbleCal in #9049

Other Changes

• refactor: merge JsonConvertingReader into SchemaAdapter by @xloya in #7678

Full Changelog: v12.0.0-beta.15...v12.0.0-beta.16