MatrixOne-v4.2.5

Release date: September 28, 2026
MatrixOne version: v4.2.5

MatrixOne 4.2.5 is a patch release on top of 4.2.4, improving multi-file data loading, reducing memory-management overhead, and fixing checkpoint filtering, log recovery, and Proxy connection deadlines.

Key Improvements

Data Loading

• Multi-File and Compressed Sources: Support file patterns for LOAD DATA and external tables, parallelize multi-file CSV reads by whole file, and add zip/zstd source support.

Memory Efficiency

• Lower Allocation and Teardown Overhead: Use compact bitsets for multi-term read filtering and narrow on-heap ownership scans during memory-pool teardown.

Key Bug Fixes

Correctness and Reliability

• Multi-Scope Loading: Preserve rows when a TP-classified plan contains multiple scopes.
• Statistics Refresh: Filter checkpoint change ranges against the requested time window, avoiding repeated statistics recalculation for historical table changes.
• Log-Service Recovery: Include Dragonboat torn-tail repair and failure-safe log rebuilding to address the tan CRC-mismatch startup failure after a crash.
• Proxy Long-Lived Connections: Clear phase-owned read deadlines after handshake, migration, and cached-backend reuse so active connections do not inherit an expired control-phase deadline.

What's Changed

• test(fulltext2): cover WAND acceptance paths by @VioletQwQ-0 in #28720
• [4.2-dev] perf: backport mpool teardown and read filter allocation fixes by @gouhongshen in #29292
• fix(stats): backport checkpoint change filtering to 4.2 by @gouhongshen in #29338
• fix(logservice): pick up dragonboat fix for tan torn-tail crc mismatch [port to 4.2-dev of #29304] by @fengttt in #29324
• feat(load): multi-file CSV fanout + zip/zstd sources [port to 4.2-dev of #29245, #29301] by @fengttt in #29321
• [4.2-dev] fix(proxy): clear backend handoff read deadlines by @LeftHandCold in #29408

Full Changelog: v4.2.4...v4.2.5