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VReplication: engine should reconcile controllers with _vt.vreplication rows after partial VReplicationExec failures

Component: VReplication

Type: Bug

Status: Open.

#20975 In vitessio/vitess;

· mattlord opened on Sep 2, 2026

vtgate: information_schema IN lists naming only system schemas fail with VT12001

Component: Query Serving

Type: Bug

Status: Open.

#20974 In vitessio/vitess;

· mattlord opened on Sep 2, 2026

vtgate: InfoSchemaRouting replays already-rewritten predicates in resetRoutingLogic

Component: Query Serving

Type: Bug

Status: Open.

#20972 In vitessio/vitess;

· mattlord opened on Sep 2, 2026

Bug Report: a constant UNION ALL branch merged into a scatter route returns its rows once per shard

Needs TriageThis issue needs to be correctly labelled and triagedThis issue needs to be correctly labelled and triaged

Type: Bug

Status: Open.

#20962 In vitessio/vitess;

· migue opened on Aug 31, 2026

Bug Report: uncorrelated aggregate subquery inside a derived table is routed to a single shard, returning a partial result

Status: Open.

#20961 In vitessio/vitess;

· migue opened on Aug 31, 2026

Bug Report: predicate pushdown into a UNION with three or more branches substitutes the wrong branch's expression

Status: Open.

#20960 In vitessio/vitess;

· migue opened on Aug 31, 2026

Bug Report: pushing a predicate into UNION branches duplicates non-deterministic expressions, returning wrong rows

Status: Open.

#20957 In vitessio/vitess;

· migue opened on Aug 31, 2026

Bug Report: join predicates pushed into UNION branches survive route merging, leaving unbound bind variables

Status: Open.

#20955 In vitessio/vitess;

· migue opened on Aug 31, 2026

Bug Report: VStreamRows source tablet retains a per-stream row buffer at its high-water mark (grows with wide-row tables)

Component: VReplication

Type: EnhancementLogical improvement (somewhere between a bug and feature)Logical improvement (somewhere between a bug and feature)

Status: Open.

Task

#20954 In vitessio/vitess;

· pedroalb opened on Aug 31, 2026

VTGate: merge ordered non-streaming scatter results without a full sort

Component: Query Serving

Type: Performance

Status: Open.

#20951 In vitessio/vitess;

· tsenart opened on Aug 31, 2026

Bug Report: length fields from replication input size allocations before validation (GTID set intervals, compressed transaction payload events)

Status: Open.

#20945 In vitessio/vitess;

· tzh476 opened on Aug 29, 2026

Release of v23.0.6

Component: GeneralChanges throughout the code baseChanges throughout the code base

Type: Release

Status: Open.

#20935 In vitessio/vitess;

· mattlord opened on Aug 28, 2026