Issues

• [Bug]: 4.2 No-PK prepared random-points falls from 3374 to 8 TPS with base-table scan/materialization

  kind/bugneeds-triage
  matrixorigin/matrixone#29621 · Filter by author LeftHandCold opened on Oct 5, 2026

• [Bug]: BigData 1B indexed INSERT fails with rpc stream closed after CN-to-CN read timeout

  kind/bugneeds-triage
  matrixorigin/matrixone#29620 · Filter by author LeftHandCold opened on Oct 5, 2026

• [Bug]: Decimal256 arithmetic precision guard lets MinInt256 escape the declared SQL domain

  kind/bugseverity/s0
  matrixorigin/matrixone#29615 · Filter by author XuPeng-SH opened on Oct 4, 2026
  

• [Bug]: Decimal256 rounded division violates full unsigned magnitude contract and forces BigInt fallback

  kind/bugseverity/s0
  matrixorigin/matrixone#29614 · Filter by author XuPeng-SH opened on Oct 4, 2026
  

• [Bug]: Decimal256 modulo narrowing returns wrong remainder or panics at magnitude boundaries

  matrixorigin/matrixone#29610 · Filter by author XuPeng-SH opened on Oct 4, 2026
  

• [Bug]: Decimal256 vector alignment and modulo panic beyond 38-digit scale differences

  kind/bugseverity/s0
  matrixorigin/matrixone#29607 · Filter by author XuPeng-SH opened on Oct 4, 2026
  

• [Bug]: Prepared random_ranges regression disables pruning and loses index access with BIGINT bindings

  area/optimizerarea/performancekind/bugneeds-triage
  matrixorigin/matrixone#29606 · Filter by author XuPeng-SH opened on Oct 4, 2026
  

• [Bug]: main CREATE INDEX backfill is ~2x slower than 4.2 with serialized lock-key preparation

  area/performancekind/bugseverity/s-1
  matrixorigin/matrixone#29602 · Filter by author LeftHandCold opened on Oct 4, 2026
  

• [Bug]: Row/column policy rewrite drops save_result SQL source classification and prevents result_scan

  kind/bugseverity/s0
  matrixorigin/matrixone#29597 · Filter by author zhangxu19830126 opened on Oct 4, 2026
  

• [Bug]: DECIMAL/DOUBLE comparison narrowing bypasses safety proof and changes query results

  kind/bugneeds-triage
  matrixorigin/matrixone#29593 · Filter by author XuPeng-SH opened on Oct 3, 2026
  

• [Bug]: main Chaos Kill CN 时 TPCC 两条单语句一致性查询短暂返回错误结果

  kind/bugneeds-triage
  Bug

  matrixorigin/matrixone#29588 · Filter by author Ariznawlll opened on Oct 3, 2026 · MO-202610

• SELECT on constant views bypasses VIEW privilege checks after REVOKE

  kind/bugseverity/s0
  matrixorigin/matrixone#29572 · Filter by author XuPeng-SH opened on Oct 2, 2026
  

• [Bug]: UnionOne regresses indexed-write copy and varlen marshal performance vs 4.2

  area/performancekind/bugseverity/s-1
  matrixorigin/matrixone#29571 · Filter by author LeftHandCold opened on Oct 2, 2026
  

• [Bug]: 4.2-dev lacks #27714 logtail subscription fix; Chaos leaves TPCC checks failing for ~19h

  kind/bugneeds-triage
  Bug

  matrixorigin/matrixone#29569 · Filter by author Ariznawlll opened on Oct 2, 2026 · MO-202610
  

• [Tech Request]: Reduce race UT CI wall time by at least ten minutes with lower CPU and memory cost

  kind/tech-request
  matrixorigin/matrixone#29562 · Filter by author XuPeng-SH opened on Oct 1, 2026
  

• Prepared DOUBLE expression peers lose DECIMAL filter pushdown

  kind/bugneeds-triageseverity/s0
  matrixorigin/matrixone#29515 · Filter by author XuPeng-SH opened on Sep 29, 2026
  2

  

• [Bug]: SF1000 seed order_line INSERT exhausts HashBuild memory budget

  kind/bugseverity/s0
  matrixorigin/matrixone#29497 · Filter by author daviszhen opened on Sep 29, 2026
  

• [Feature Request]: arm64 NEON SIMD vector distance kernels (requires Go 1.27)

  kind/feature
  matrixorigin/matrixone#29495 · Filter by author cpegeric opened on Sep 29, 2026
  

• [Bug]: multi-CN percentile cancellation connector cleanup times out

  kind/bugneeds-triage
  matrixorigin/matrixone#29492 · Filter by author slyunnn opened on Sep 29, 2026 · MO-202609
  1

  

• [Subtask]: C12 — Establish differential, application and performance release acceptance

  kind/subtask
  matrixorigin/matrixone#29491 · Filter by author ck89119 opened on Sep 29, 2026
  

• [Subtask]: C11 — Gate rollout and preserve legacy data through migration and recovery

  kind/subtask
  matrixorigin/matrixone#29490 · Filter by author ck89119 opened on Sep 29, 2026
  

• [Subtask]: C10 — Implement GBK encoding and gbk_bin/gbk_chinese_ci semantics

  kind/subtask
  matrixorigin/matrixone#29489 · Filter by author ck89119 opened on Sep 29, 2026
  

• [Subtask]: C08 — Make indexed access and persisted filtering collation-correct

  kind/subtask
  matrixorigin/matrixone#29487 · Filter by author ck89119 opened on Sep 29, 2026
  

• [Subtask]: C05 — Unify collation semantics across sort, aggregation, joins and shuffle

  kind/subtask
  matrixorigin/matrixone#29484 · Filter by author ck89119 opened on Sep 29, 2026
  

• [Subtask]: C02 — Implement connection encodings and reject latin1 consistently

  kind/subtask
  matrixorigin/matrixone#29481 · Filter by author ck89119 opened on Sep 29, 2026