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vstreamclient: framework for robust + simple usage

Component: VReplication

NeedsWebsiteDocsUpdateWhat it saysWhat it says

Type: Feature

Status: Open (in progress).

vitessio/vitessnumber 17222

#17222 In vitessio/vitess;

· derekperkins opened on Nov 13, 2024

Memory Pressure / Load Shedding

Component: Query Serving

Type: Performance

Status: Open.

Feature

#8897 In vitessio/vitess;

· vmg opened on Sep 28, 2021

vttablet: add memory-pressure backpressure

Component: VTTablet

NeedsDescriptionUpdateThe description is not clear or comprehensive enough, and needs workThe description is not clear or comprehensive enough, and needs work

NeedsIssueA linked issue is missing for this Pull RequestA linked issue is missing for this Pull Request

NeedsWebsiteDocsUpdateWhat it saysWhat it says

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

Status: Draft (not ready).

vitessio/vitessnumber 19831

#19831 In vitessio/vitess;

· mattlord opened on Apr 9, 2026

vtgate: normalize viperutil keys and flag references to use dashes

Component: VTGate

Type: Internal Cleanup

Status: Open (in progress).

vitessio/vitessnumber 19825

#19825 In vitessio/vitess;

· ManthanNimodiya opened on Apr 9, 2026

Deprecate legacy replication lag algorithm v25

Component: Documentationdocs related issues/PRsdocs related issues/PRs

Component: VTGate

StaleMarks PRs as stale after a period of inactivity, which are then closed after a grace period.Marks PRs as stale after a period of inactivity, which are then closed after a grace period.

Type: Internal Cleanup

Status: Open (in progress).

vitessio/vitessnumber 19802

#19802 In vitessio/vitess;

· khkim6040 opened on Apr 6, 2026

mysqlctl: expose SOURCE_RETRY_COUNT through --replication-retry-count

Component: VTTablet

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

Status: Open (in progress).

vitessio/vitessnumber 19747

#19747 In vitessio/vitess;

· officialasishkumar opened on Mar 28, 2026

sqlparser: use utf8mb3_general_ci lower-casing rules for IdentifierCI comparisons

Component: Evalenginechanges to the evaluation enginechanges to the evaluation engine

Component: Online DDLOnline DDL (vitess/native/gh-ost/pt-osc)Online DDL (vitess/native/gh-ost/pt-osc)

Component: Query Serving

Component: TabletManager

Component: VDiff

Component: VTGate

Component: VTTablet

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

Status: Draft (not ready).

vitessio/vitessnumber 19745

#19745 In vitessio/vitess;

· arthurschreiber opened on Mar 28, 2026

sqlparser: faster parsing via slab allocations

Benchmark meAdd label to PR to run benchmarksAdd label to PR to run benchmarks

Component: Query Serving

Type: Performance

Status: Draft (not ready).

vitessio/vitessnumber 19695

#19695 In vitessio/vitess;

· arthurschreiber opened on Mar 24, 2026

sqlparser: use static strings for keyword tokens

Component: Evalenginechanges to the evaluation enginechanges to the evaluation engine

Component: Online DDLOnline DDL (vitess/native/gh-ost/pt-osc)Online DDL (vitess/native/gh-ost/pt-osc)

Component: Query Serving

Component: VTGate

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

Type: Internal Cleanup

Status: Draft (not ready).

vitessio/vitessnumber 19688

#19688 In vitessio/vitess;

· arthurschreiber opened on Mar 21, 2026

VTOrc: Leverage gossip protocol to ERS when primary tablet is down

Benchmark meAdd label to PR to run benchmarksAdd label to PR to run benchmarks

Component: VTOrcVitess Orchestrator integrationVitess Orchestrator integration

Component: VTTablet

Type: Bug

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

Status: Open (in progress).

vitessio/vitessnumber 19686

#19686 In vitessio/vitess;

· mattlord opened on Mar 21, 2026

sqlparser: preserve original input text for implicit column aliases

Benchmark meAdd label to PR to run benchmarksAdd label to PR to run benchmarks

Component: Query Serving

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

Status: Open (in progress).

vitessio/vitessnumber 19675

#19675 In vitessio/vitess;

· arthurschreiber opened on Mar 19, 2026

test: Add missing unit tests in vtgate/schema

Component: Build/CI

Component: VTGate

Type: CI/Build

Status: Open (in progress).

vitessio/vitessnumber 19647

#19647 In vitessio/vitess;

· Devanshusharma2005 opened on Mar 16, 2026

planbuilder: fix LEFT JOIN predicate pushdown breaking outer join semantics

Component: Query Serving

Component: VTGate

Type: Bug

Status: Open (in progress).

vitessio/vitessnumber 19642

#19642 In vitessio/vitess;

· ManthanNimodiya opened on Mar 15, 2026

Fix LAST_INSERT_ID for INSERT ... ON DUPLICATE KEY UPDATE on sharded tables

Component: Query Serving

Component: VTGate

StaleMarks PRs as stale after a period of inactivity, which are then closed after a grace period.Marks PRs as stale after a period of inactivity, which are then closed after a grace period.

Type: Compatibility Bug

Status: Draft (not ready).

vitessio/vitessnumber 19636

#19636 In vitessio/vitess;

· arthurschreiber opened on Mar 13, 2026

SetReplicationSource: handle mysqld down in PRIMARY self-demotion

Component: VTTablet

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

Status: Open (in progress).

vitessio/vitessnumber 19624

#19624 In vitessio/vitess;

· timvaillancourt opened on Mar 11, 2026

e2e: fix flaky .Teardown() logic to avoid orphaned processes

Component: Build/CI

Type: CI/Build

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

Type: Internal Cleanup

Status: Open (in progress).

vitessio/vitessnumber 19622

#19622 In vitessio/vitess;

· timvaillancourt opened on Mar 11, 2026

Add StreamExecuteRaw gRPC for zero-parse MySQL streaming

Benchmark meAdd label to PR to run benchmarksAdd label to PR to run benchmarks

Component: Query Serving

Component: VTAdminVTadmin interfaceVTadmin interface

Component: VTGate

Component: VTTablet

NeedsBackportReasonIf backport labels have been applied to a PR, a justification is requiredIf backport labels have been applied to a PR, a justification is required

NeedsDescriptionUpdateThe description is not clear or comprehensive enough, and needs workThe description is not clear or comprehensive enough, and needs work

NeedsIssueA linked issue is missing for this Pull RequestA linked issue is missing for this Pull Request

NeedsWebsiteDocsUpdateWhat it saysWhat it says

Type: Performance

Status: Draft (not ready).

vitessio/vitessnumber 19620

#19620 In vitessio/vitess;

· arthurschreiber opened on Mar 11, 2026

planbuilder: support DML in streaming, eliminate PlanSelectStream

Component: Query Serving

Component: VTTablet

NeedsBackportReasonIf backport labels have been applied to a PR, a justification is requiredIf backport labels have been applied to a PR, a justification is required

NeedsDescriptionUpdateThe description is not clear or comprehensive enough, and needs workThe description is not clear or comprehensive enough, and needs work

NeedsIssueA linked issue is missing for this Pull RequestA linked issue is missing for this Pull Request

NeedsWebsiteDocsUpdateWhat it saysWhat it says

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

Status: Draft (not ready).

vitessio/vitessnumber 19613

#19613 In vitessio/vitess;

· arthurschreiber opened on Mar 10, 2026

Support configurable 'slow query' detection for vtgate

Component: Query Serving

Component: VTGate

Type: Feature

Status: Open (in progress).

vitessio/vitessnumber 19603

#19603 In vitessio/vitess;

· varundeepsaini opened on Mar 7, 2026

Unify PKE selection semantics across schemadiff consumers

Status: Open (in progress).

vitessio/vitessnumber 19602

#19602 In vitessio/vitess;

· varundeepsaini opened on Mar 7, 2026

vttestserver: avoid race picking random port

Backport to: release-23.0Needs to be backport to release-23.0Needs to be backport to release-23.0

Component: Build/CI

Type: Bug

Type: CI/Build

Type: Internal Cleanup

Status: Open (in progress).

vitessio/vitessnumber 19546

#19546 In vitessio/vitess;

· timvaillancourt opened on Mar 3, 2026

chore: rewrite flagutil.OptionalFlag as a generic type

Component: Build/CI

Type: Testing

Status: Open (in progress).

vitessio/vitessnumber 19537

#19537 In vitessio/vitess;

· ManthanNimodiya opened on Mar 2, 2026

VReplication: Implement Experimental Parallel Applier

Component: VReplication

NeedsWebsiteDocsUpdateWhat it saysWhat it says

Type: Feature

Status: Open (in progress).

vitessio/vitessnumber 19535

#19535 In vitessio/vitess;

· mattlord opened on Mar 2, 2026

fix(vtexplain): case-sensitive COMMENT check for sequence tables

NeedsBackportReasonIf backport labels have been applied to a PR, a justification is requiredIf backport labels have been applied to a PR, a justification is required

NeedsDescriptionUpdateThe description is not clear or comprehensive enough, and needs workThe description is not clear or comprehensive enough, and needs work

NeedsIssueA linked issue is missing for this Pull RequestA linked issue is missing for this Pull Request

NeedsWebsiteDocsUpdateWhat it saysWhat it says

Status: Open (in progress).

vitessio/vitessnumber 19444

#19444 In vitessio/vitess;

· anujagrawal380 opened on Feb 22, 2026

refactor: VCursor/VSchema file splitting

Component: Query Serving

Type: Internal Cleanup

Status: Open (in progress).

vitessio/vitessnumber 19442

#19442 In vitessio/vitess;

· anujagrawal380 opened on Feb 22, 2026