MatrixOne-v3.0.6

Release date: Jan 28 2026
MatrixOne version: v3.0.6

MatrixOne 3.0.6 introduces improvements and bug fixes that enhance usability. Below are the major updates.

Key Improvements

1. Bloom filter & multi‑CN: Support Bloom filters without regular filters and broadcast Bloom filters across CNs to improve distributed query performance.
2. Backup & export: Add a file index for backups and fix table data export issues to make backup/restore and export more reliable.
3. Vector features: Enable simsimd (MO_CL_SIMSIMD=1), support vector indexes for prepared statements, and refine vector test cases for better performance and stability.
4. Optimizer & execution: Improve UNION result stability, refine filter push‑down and hint handling (including CTE and type matching), and correct NDV estimation for modulo operations.
5. GC & storage: Optimize GC behavior, fix tmp‑fs GC logging nil‑entry handling, and scope CN segment maps by transaction and table to avoid clone‑related delete skips.

Bug Fixes

1. Fix a hang that could occur after packet loss during data loading.
2. Fix inconsistent caching in the auto‑increment service, stabilize nested SQL/auto‑increment retry paths, and remove noisy auto‑increment logs.
3. Fix multi‑CN scan statistics consistency, a window function compatibility issue, and cap out of range crashes.
4. Correct default MARCH for x86_64 (was incorrectly set to haswell) to avoid compatibility and performance issues.

What's Changed

• modify year from 2025 to 2026. by @Ariznawlll in #23441
• use bf without filter and broadcast bf with multi cn by @iamlinjunhong in #23446
• alter cases by @heni02 in #23466
• Add file index for backup by @LeftHandCold in #23474
• Fixed a bug that caused the system to stuck after packet loss during data loading by @LeftHandCold in #23390
• remove a useless warning 3.0 by @aptend in #23482
• Fixed a bug related to inconsistent caching in the auto-increment service by @LeftHandCold in #23489
• to 3.0: Fix multi-CN scan collection consistency and document AP shuffle/merg… by @gouhongshen in #23492
• enable simsimd library with MO_CL_SIMSIMD=1 by @cpegeric in #23490
• modify vector case for stable test by @iamlinjunhong in #23496
• fix: Correct NDV estimation for modulo operations to 3.0-dev by @XuPeng-SH in #23486
• chore: change code owner 3.0-dev by @XuPeng-SH in #23500
• to 3.0: Fix nil entry handling in tmp fs GC logging by @gouhongshen in #23479
• order for union for stable test by @iamlinjunhong in #23505
• to 3.0: Stabilize retry paths for nested SQL and auto‑increment allocation by @gouhongshen in #23343
• enable vector index for prepared stmt by @aunjgr in #23517
• Fix window function compatibility bug by @LeftHandCold in #23515
• to 3.0: fix export table data by @gouhongshen in #23539
• fix remap hint after cte and match int to float by @iamlinjunhong in #23537
• GC optimization by @LeftHandCold in #23491
• BUG: default MARCH set to haswell for x86_64 by @cpegeric in #23547
• to 3.0: Scope CN segment map by txn and table to prevent clone-induced delete skips by @gouhongshen in #23556
• #23579 fix cap out of range by @cpegeric in #23585
• remove auto-increment log by @LeftHandCold in #23596
• to 3.0: unlimited filtering on workspace entry by @gouhongshen in #23595

Full Changelog: v3.0.5...v3.0.6