changelog.md

Changelog of Vitess v19.0.0

Announcement

General

• summary: updated summary with 19.0 changes #15132

Bug fixes

Backup and Restore

• MysqlCtl: implement missing ReadBinlogFilesTimestamps function #14525
• Replication: Have the DB flavor process waiting for a pos #14745
• [release-19.0 backport] Mysqld: capture mysqlbinlog std error output (#15278) #15379

Build/CI

• Update create_release.sh #14492
• Set minimal tokens for auto_approve_pr #14534
• Run Go deps upgrade every week #14910

CLI

• Fix anonymous paths in cobra code-gen #14185
• [release-19.0] Fix some binaries to print the versions (#15306) #15310
• [release-19.0] tablet: remove max-waiters setting (#15323) #15325

Cluster management

• Fix Panic in PRS due to a missing nil check #14656
• Fix hearbeatWriter Close being stuck if waiting for a semi-sync ACK #14823
• Block replication and query RPC calls until wait for dba grants has completed #14836
• Fix the parser to allow multiple strings one after the other #15076

Docker

• [Docker] Fix VTadmin build #14363

Evalengine

• evalengine: Misc bugs #14351
• datetime: obey the evalengine's environment time #14358
• Fix nullability checks in evalengine #14556
• evalengine: Handle zero dates correctly #14610
• evalengine: Fix the min / max calculation for decimals #14614
• evalengine: Fix week overflow #14859
• evalengine: Return evalTemporal types for current date / time #15079
• mysql/datetime: Improve TIME parsing logic #15135

Examples

• examples: fix flag syntax for zkctl #14469

General

• viper: register dynamic config with both disk and live #14453
• Protect ExecuteFetchAsDBA against multi-statements, excluding a sequence of CREATE TABLE|VIEW. #14954
• Use the correct parser for truncation #14985
• Fix log format error in vttls.go #15035

Observability

• Fix #14414: resilient_server metrics name/prefix logic is inverted, leading to no metrics being recorded #14415

Online DDL

• Online DDL: timeouts for all gRPC calls #14182
• OnlineDDL: fix scenarios where migration hangs instead of directly failing #14290
• schemadiff: fix missing DROP CONSTRAINT in duplicate/redundant constraints scenario. #14387
• [release-19.0] VReplication/OnlineDDL: reordering enum values (#15103) #15352

Query Serving

• bugfix: use the proper interface for comment directives #14267
• evalengine: Use the right unknown type to initialize #14313
• engine: fix race when reading fields in Concatenate #14324
• tabletserver: do not consolidate streams on primary tablet when consolidator mode is notOnPrimary #14332
• Planner bugfix #14365
• semantics: Fix missing union pop from scoper #14401
• fix: mismatch in column count and value count #14417
• Make column resolution closer to MySQL #14426
• vtgate/engine: Fix race condition in join logic #14435
• Bug fix: Use target tablet from health stats cache when checking replication status #14436
• Ensure hexval and int don't share BindVar after Normalization #14451
• Make connection killing resilient to MySQL hangs #14500
• planbuilder bugfix: expose columns through derived tables #14501
• Fix missing query serving error code #14520
• Fix type coercion in cascading non-literal updates #14524
• Type Cast all update expressions in verify queries #14555
• expression rewriting: enable more rewrites and limit CNF rewrites #14560
• bug fix: stop all kinds of expressions from cnf-exploding #14585
• fix concurrency on stream execute engine primitives #14586
• bugfix: do not rewrite an expression twice #14641
• txserializer: change log message based on dry run #14651
• Vindexes: Pass context in consistent lookup handleDup #14653
• Fail correlated subquery in planning phase instead of a runtime error #14701
• bugfix: use the original expression and not the alias #14704
• Fix RegisterNotifier to use a copy of the tables to prevent data races #14716
• fix: flush tables with read lock to run only with reserved connection #14720
• TabletServer: Handle nil targets properly everywhere #14734
• bugfix: don't panic when missing schema information #14787
• schemadiff: allow char->varchar FK reference type matching #14849
• sqlparser: FORCE_CUTOVER is a non-reserved keyword #14885
• Improve err extraction logic #14887
• Add nil check to prevent panics #14902
• evalengine bugfix: handle nil evals correctly when coercing values #14906
• Vttablet panic in requests Wait #14924
• schemadiff: fix diffing of textual columns with implicit charsets #14930
• bugfix: Columns alias expanding #14935
• Fix panic for unknown columns in foreign key managed mode #15025
• Fix subquery cloning and dependencies #15039
• Fix buffer_drain_concurrency not doing anything #15042
• Copy expression types to avoid weight_strings and derived tables #15069
• Improve efficiency and accuracy of mysqld.GetVersionString #15096
• mysql: Ensure we set up the initial collation correctly #15115
• make sure to handle unsupported collations well #15134
• [release-19.0] make sure to handle unsupported collations well #15143
• [release-19.0] fix: ignore internal tables in schema tracking (#15141) #15147
• [release-19.0] Planner Bug: Joins inside derived table (#14974) #15177
• [release-19.0] TxThrottler: dont throttle unless lag (#14789) #15196
• [release-19.0] bugfix: wrong field type returned for SUM (#15192) #15206
• [release-19.0] Avoid rewriting unsharded queries and split semantic analysis in two (#15217) #15230
• [release-19.0] Fix Delete with multi-tables related by foreign keys (#15218) #15255
• [release-19.0] sqlparser: use integers instead of literals for Length/Precision (#15256) #15269
• [release-19.0] Fix Go routine leaks in streaming calls (#15293) #15301
• [release-19.0] planner: support union statements with ctes (#15312) #15324
• [release-19.0] Column alias expanding on ORDER BY (#15302) #15329
• [release-19.0] go/vt/discovery: use protobuf getters for SrvVschema (#15343) #15346
• [release-19.0] SHOW VITESS_REPLICATION_STATUS: Only use replication tracker when it's enabled (#15348) #15362
• [release-19.0] Bugfix: GROUP BY/HAVING alias resolution (#15344) #15377

Schema Tracker

• discovery: fix crash with nil server vschema #15086

TabletManager

• mysqlctl: Cleanup stale socket lockfile #14553
• mysqlctl: Fix cleaning up the stale lock file #14600
• tabletserver: Skip wait for DBA grants for external tablets #14629
• mysqlctl: Error out on stale socket #14650

Throttler

• Throttler: set timeouts on gRPC communication and on topo communication #14165
• examples: rm heartbeat flags #14980
• [release-19.0] Throttler: fix nil pointer dereference error (#15180) #15181

Topology

• Ignore non-Shard keys in FindAllShardsInKeyspace List impl #15117

VReplication

• VReplication: error on vtctldclient commands w/o tablet types #14294
• VDiff: wait for shard streams of one table diff to complete for before starting that of the next table #14345
• Vtctld SwitchReads: fix bug where writes were also being switched as part of switching reads when all traffic was switched using SwitchTraffic #14360
• VDiff tablet selection: pick non-serving tablets in Reshard workflows #14413
• VDiff: "show all" should only report vdiffs for the specified keyspace and workflow #14442
• VReplication: Properly Handle FK Constraints When Deferring Secondary Keys #14543
• Materializer: normalize schema via schemadiff on --atomic-copy #14636
• VReplication TableStreamer: Only stream tables in tablestreamer (ignore views) #14646
• VDiff: Fix vtctldclient limit bug #14778
• VReplication: Guard against unsafe _vt.vreplication writes #14797
• VReplication SwitchWrites: Properly return errors in SwitchWrites #14800
• VReplication: Update singular workflow in traffic switcher #14826
• Flakes: Fix flaky vtctl unit test TestMoveTables #14886
• VReplication: send unique key name to rowstreamer, which can then use with FORCE INDEX #14916
• VDiff: Make max diff duration upgrade/downgrade safe #14995
• [release-19.0] VReplication: disable foreign_key_checks for bulk data cleanup (#15261) #15265
• [release-19.0] VReplication: Make Target Sequence Initialization More Robust (#15289) #15308

VTCombo

• [release-19.0] Correctly set log_dir default in vtcombo (#15153) #15155

vtctl

• VReplication: Add missing info to vtctldclient workflow SHOW output #14225

vtctldclient

• vtctldclient: Apply tablet type filtering for keyspace+shard in GetTablets #14467

vtexplain

• [release-19.0] vtexplain: Fix setting up the column information (#15275) #15282
• [release-19.0] vtexplain: Ensure memory topo is set up for throttler (#15279) #15285

vttestserver

• [release-19.0] Revert unwanted logging change to vttestserver (#15148) #15150
• [release-19.0] use proper mysql version in the vttestserver images (#15235) #15239

CI/Build

Backup and Restore

• Incremental backup: fix race condition in reading 'mysqlbinlog' output #14330

Build/CI

• Enhance PR template + CI workflow for backport labels. #14779
• Update MySQL apt package and GPG signature #14785
• fix: build on delete operator #14833
• CI: Adjust FOSSA API secret name #14918
• CI: Tweak our code coverage profile behavior #14967
• Fix relevant files listing for endtoend CI #15104
• [release-19.0] Remove concurrency group for check labels workflow (#15197) #15209
• [release-19.0] Update toolchain version in go.mod (#15245) #15246

Docker

• Vitess MySQL Docker Image #14158
• Build and push Docker vitess/vttestserver DockerHub from GitHub Actions #14314
• Add vtexplain and vtbackup to base docker auto-build #14318

Evalengine

• Fix codegen command with the right type #14376

General

• [main] Upgrade the Golang version to go1.21.2 #14193
• [main] Upgrade the Golang version to go1.21.3 #14231
• [main] Upgrade the Golang version to go1.21.4 #14488
• [main] Upgrade the Golang version to go1.21.5 #14689
• connpool: fix racy test #14731
• [release-19.0] Upgrade the Golang version to go1.22.0 #15169
• [release-19.0] Upgrade the Golang version to go1.22.1 #15406

Online DDL

• onlineddl_vrepl_stress: fix flakiness caused by timeouts #14295
• OnlineDDL: reduce vrepl_stress workload in forks #14302
• Online DDL: fix endtoend test dropping foreign key #14522
• VTGate/foreign keys stress test: add tests for 'standard' replica #14747

VTAdmin

• Update vtadmin dependencies #14336
• Fix stray vtadmin package-lock.json content #14350

VTorc

• docker: add dedicated vtorc container #14126

Dependabot

General

• Bump github.com/cyphar/filepath-securejoin from 0.2.3 to 0.2.4 #14239
• Bump golang.org/x/net from 0.14.0 to 0.17.0 #14260
• Bump google.golang.org/grpc from 1.55.0-dev to 1.59.0 #14364
• build(deps): bump golang.org/x/crypto from 0.16.0 to 0.17.0 #14814

Java

• build(deps): bump com.google.guava:guava from 30.1.1-jre to 32.0.0-jre in /java #14759
• build(deps): bump io.netty:netty-handler from 4.1.93.Final to 4.1.94.Final in /java #14863

VTAdmin

• Bump @cypress/request and cypress in /vitess-mixin/e2e #14038
• Bump postcss from 8.4.21 to 8.4.31 in /web/vtadmin #14173
• Bump @babel/traverse from 7.21.4 to 7.23.2 in /web/vtadmin #14304
• Bump @adobe/css-tools from 4.3.1 to 4.3.2 in /web/vtadmin #14654
• build(deps-dev): bump vite from 4.2.3 to 4.5.2 in /web/vtadmin #15001

Documentation

CLI

• Bypass cobra completion commands so they still function #14217

Documentation

• release notes: edit summary for consistency #14319
• release notes: add FK import to summary #14518
• 19.0 release notes: ExecuteFetchAsDBA breaking change #15021

General

• Add summary changes for recent PRs #14598
• Add summary changes to indicate MySQL 5.7 is EOL and Vitess is dropping support for it in v19 #14663

Enhancement

Backup and Restore

• increase vtctlclient backupShard command success rate #14604
• Backup: --incremental-from-pos supports backup name #14923
• Incremental backup: do not error on empty backup #15022

Build/CI

• CI: Re-enable FOSSA scan and add Codecov #14333
• Automatic approval of vitess-bot clean backports #14352
• Tell shellcheck to follow sourced files #14377
• Add step to static check to ensure consistency of GHA workflows #14724
• Add release-19.0 to the auto go upgrade #15157
• [release-19.0] Update paths filter action (#15254) #15264

CLI

• VReplication: Add traffic state to vtctldclient workflow status output #14280
• vtctldclient,grpcvtctldserver ApplySchema: return unknown params from grpcvtctldserver.ApplySchema, log them in vtctldclient.ApplySchema #14672

Cluster management

• Add HealthCheck's healthy map to the VTGate UI #14521
• Make vttablet wait for vt_dba user to be granted privileges #14565
• Add wait for reading mycnf to prevent race #14626
• Add log for error to help debug #14632
• Take replication lag into account while selecting primary candidate #14634
• Postpone waiting for dba grants after restore has succeeded #14680
• vtctldclient: --strict rejects unknown vindex params in ApplyVSchema #14862
• Respect tolerable replication lag even when the new primary has been provided in PRS #15090
• [release-19.0] go/vt/wrangler: pass reparent options structs (#15251) #15286

Docker

• Build and push Docker vitess/lite to DockerHub from GitHub Actions #14243
• Build and push Docker vitess/base and component images to DockerHub from GitHub Actions #14271
• Be more explicit in release notes regarding the deprecation of certain vitess/lite tags #15040

Evalengine

• evalengine: Improve the typing situation for functions #14533
• evalengine: Implement SUBSTRING #14899
• evalengine: Implement FROM_DAYS #15058
• evalengine: Implement TO_DAYS #15065
• evalengine: Add MID alias #15066
• evalEngine: Implement TIME_TO_SEC #15094

Examples

• Tools: Remove dependencies installed by make tools #14309
• Deprecate mysqld in vitess/lite and use mysql:8.0.30 image for the operator #14990

General

• build: Allow compilation on Windows #14718

Observability

• Debug vars: Expose build version in /debug/vars #14713
• [servenv] optional pprof endpoints #14796
• vtgate: increment vtgate_warnings counter for non atomic commits #15010
• query_executor: Record WaitingForConnection stat in all cases #15073

Online DDL

• Online DDL: support DROP FOREIGN KEY statement #14338
• Online DDL: revert considerations for migrations with foreign key constraints #14368
• Enable Online DDL foreign key support (also in vtgate stress tests) when backing MySQL includes appropriate patch #14370
• Online DDL: lint DDL strategy flags #14373
• schemadiff: remove table name from auto-generated FK constraint name #14385
• TableGC: speed up GC process via RequestChecks(). Utilized by Online DDL for artifact cleanup #14431
• Support fast_analyze_table variable, introduced in public MySQL fork #14494
• Online DDL: edit CONSTRAINT names in CREATE TABLE #14517
• Online DDL: support migration cut-over backoff and forced cut-over #14546
• ApplySchema: log selected flags #14798
• schemadiff: using MySQL capabilities to analyze a SchemaDiff and whether changes are applicable instantly/immediately. #14878
• OnlineDDL to use schemadiff version capabilities; refactor some flavor code. #14883
• schemadiff: formalize InstantDDLCapability #14900

Query Serving

• add option for warming reads to mirror primary read queries onto replicas from vtgates to warm bufferpools #13206
• Add support for new lock syntax in MySQL8 #13965
• gen4: Support explicit column aliases on derived tables #14129
• Gracefully shutdown VTGate instances #14219
• Mark non-unique lookup vindex as backfill to ignore vindex selection #14227
• UNION column type coercion #14245
• Add support for common table expressions #14321
• Add cycle detection for foreign keys #14339
• feat: support invisible columns #14366
• Add support for more queries #14369
• schemadiff: identify a FK sequential execution scenario, and more #14397
• Add support for AVG on sharded queries #14419
• Use hash joins when nested loop joins are not feasible #14448
• Make Foreign_key_checks a Vitess Aware variable #14484
• Add SHOW VSCHEMA KEYSPACES query #14505
• Support unlimited number of ORs in ExtractINFromOR #14566
• planbuilder: push down ordering through filter #14583
• refactor the INSERT engine primitive #14606
• Optimise hash joins #14644
• schemadiff: granular foreign key reference errors #14682
• schemadiff: pursue foreign key errors and proceed to build schema #14705
• schemadiff: additional FK column type matching rules #14751
• Fix order by and group by normalization #14764
• reduce NOWAIT usage to tables with unique keys for foreign key plans #14772
• vtgate: record warning for partially successful cross-shard commits #14848
• Added support for group_concat and count distinct with multiple expressions #14851
• Multi Table Delete Planner Support #14855
• Improve sharded query routing for tuple list #14892
• Make Schema Tracking case-sensitive #14904
• Explain Statement plan improvement #14928
• planner: support cross shard DELETE with LIMIT/ORDER BY #14959
• transaction_mode variable to return flag default if unset #15032
• evalengine: Implement LAST_DAY #15038
• schemadiff: analyze and report foreign key loops/cycles #15062
• Add support for multi table deletes with foreign keys #15081
• Add support for delete planning with limits in presence of foreign keys #15097

TabletManager

• Allow for passing in the MySQL shutdown timeout #14568

Throttler

• Tablet throttler: post 18 refactoring, race condition fixes, unit & race testing, deprecation of HTTP checks #14181

VReplication

• vreplication timeout query optimizer hints #13840
• VReplication: Ensure that RowStreamer uses optimal index when possible #13893
• go/vt/wrangler: add len(qr.Rows) check to no streams found log msg #14062
• Migrate CreateLookupVindex and ExternalizeVindex to vtctldclient #14086
• set vreplication net read and net write timeout session vars to high values #14203
• allow tablet picker to exclude specified tablets from its candidate list #14224
• VReplication: Add --all-cells flag to create sub-commands #14341
• go/vt/wrangler: reduce VReplicationExec calls when getting copy state #14375
• VStream: Skip vindex keyrange filtering when we can #14384
• implement --max-report-sample-rows for VDiff #14437
• VReplication VPlayer: support statement and transaction batching #14502
• Snapshot connection: revert to explicit table locks when FTWRL is unavailable #14578
• VReplication: Improve replication plan error messages #14752
• VDiff: Support a max diff time for tables #14786
• VDiff: Support diffing tables without a defined Primary Key #14794

VTAdmin

• Optimize the GetWorkflows RPC #14212

vtctldclient

• Support cluster bootstrapping in vtctldclient #14315

vttestserver

• Make vttestserver docker image work with vtctldclient #14665

Feature Request

Build/CI

• Automatically update the Golang dependencies using a CRON #14891

Cluster management

• [release-19.0] [vtctldclient] Add GetShardReplication (#15389) #15390

Evalengine

• evalengine: implement AggregateEvalTypes #15085

Query Serving

• Cache stream query plans in vttablet #13264
• Foreign key on update action with non literal values #14278
• Replace into statement plan with foreign keys : unsharded #14396
• Enable REPLACE INTO engine and Fix Foreign key locking issue #14532
• Add foreign key support for insert on duplicate key update #14638
• Multi Table Delete Support: join with reference table #14784
• schemadiff: EnumReorderStrategy, checking if enum or set values change ordinal #15106

VReplication

• Provide subset of shards for certain VReplication Commands #14873

VTAdmin

• vtadmin onlineddl endpoints #15114
• [release-19.0] vtadmin onlineddl endpoints (#15114) #15144

Internal Cleanup

Backup and Restore

• vtbackup: Fix copy pasta typo in option description #14664

Build/CI

• Typo fix and remove unsupported branch for go version upgrade matrix #14896
• Reduce the frequency of the golang dependency upgrade CRON #15008
• Remove codebeat badge #15116

CLI

• Make vtctldclient mount command more standard #14281
• remove deprecated flags from the codebase #14544
• cleanup deprecated flag types in tabletenv #14733

Cluster management

• Enable verbose logging for some more RPCs #14770
• go/vt/topo: add error value to GetTablet logs #14846

Docker

• Remove MYSQL_FLAVOR from all Docker images #14159

Documentation

• Fix broken link in docker readme #14222
• Mention roadmap planning/modification in the release process #14254

Evalengine

• refactor: introduce evalengine type and use it #14292
• sqlparser: export all Expr interfaces #14371
• evalengine: Proper support for bit literals #14374
• evalengine: fix numeric coercibility #14473
• evalengine: Internal cleanup and consistency fixes #14854

General

• chore: unnecessary use of fmt.Sprintf #14328
• Miscellaneous typo fixes to comments #14472
• Refactor: use NonEmpty() instead of !IsEmpty() #14499
• Fix license header typo #14630
• go/vt/vtgate: fix nilness issues #14685
• go/vt/vttablet: fix nilness issues #14686
• go/vt/vtadmin: fix nilness issues #14687
• go/cache: fix nilness issues and unused code #14688
• Keyspace ServedFrom: remove this deprecated attribute and related code #14694
• go/vt/topo: fix nilness issues and unused variables #14709
• go/vt/wrangler: fix nilness issues and unused variable #14710
• go/vt/vtctl: fix nilness issues and error scopes #14711
• mysql: Refactor out usage of servenv #14732
• Remove servenv usage and config flags from collations #14781
• Remove unused EventStreamer #14783
• Cleanup of dead code #14799
• go: resolve various nilness issues #14803
• sqlparser: Refactor out servenv and inject everywhere #14822
• Allow for building 32 bit libraries for subparts #14841
• Improve links in README #14867
• Use one canonical style for unlimited queries #14870
• Fix a number of CodeQL warnings #14882
• Update Go dependencies #14888
• Modify the release instructions to properly clone Vitess when using the vtop examples #14889
• Dead code cleanup #14894
• Refactor out more usage of servenv for mysql version #14938
• refac: deprecate vitess/go/maps2 for golang.org/x/exp/maps #14960
• vtenv: Introduce vtenv for passing in collation & parser information #14994

Observability

• Remove some logs that are logging excessively on large clusters #14825
• vstreamer: rm excessive logging #14856

Online DDL

• New unified internal table names format, part 1: identifying and accepting new format tables #14613

Query Serving

• Use panic instead of errors inside the operator package #14085
• sqlparser: normalize IndexInfo #14177
• refactor plan test cases #14192
• Rename BinaryIsAtVersion to BinaryIsAtLeastAtVersion #14269
• Refactor: foreign key in semantic analysis phase #14273
• Rename Foreign Key enum values in VSchema and drop FK_ prefix #14274
• Refactor: New operator InsertionSelection to adhere to the operator model #14286
• refactor: move more code from logical plans to ops #14287
• evalengine: serialize to SQL #14337
• vindexes: Efficient unicode hashing #14395
• tx throttler: remove unused topology watchers #14412
• sqlparser: Use KEY instead of INDEX for normalized form #14416
• tx_throttler: delete topo watcher metric instead of deprecating #14445
• Remove excessive VTGate logging of default planner selection #14554
• refactor: minor cleanups in planner code #14642
• planbuilder: clean up code #14657
• Pass on vindex errors with wrap than overriding them #14737
• refactor: remove more errors from operator planning #14767
• Change variable name for better readability #14771
• go/cache: use generics and remove unused API #14850
• Export convertMySQLVersionToCommentVersion to use it in vitess-operator #14988
• [release-19.0] schemadiff: Clean up MySQL version from diff hints (#15210) #15213

TabletManager

• logging: log time taken for tablet initialization only once #14597
• Replace use of WAIT_UNTIL_SQL_THREAD_AFTER_GTIDS with WAIT_FOR_EXECUTED_GTID_SET #14612

Throttler

• MaxReplicationLagModule.recalculateRate no longer fills the log #14875

VReplication

• VReplication: VTTablet flag cleanup #14297

vtctl

• Move all examples to vtctldclient #14226

vtctldclient

• Fix typo for --cells flag help description in ApplyRoutingRules #14721

Performance

Evalengine

• Tiny Weights #14402

General

• Replace usages of bytes.Buffer with strings.Builder #14539
• [release-19.0] prevent vtctld from creating tons of S3 connections (#15296) #15401

Query Serving

• Improved Connection Pooling #14034
• schemadiff: improved heuristic for dependent migration permutation evaluation time #14249
• mysql/conn: do not allocate during writes #14482
• Use GetTabletsByCell in healthcheck #14693
• mysql: do not allocate in parseOKPacket #15067
• mysql: remove more allocations from parseOKPacket #15082

Throttler

• Throttler: Use tmclient pool for CheckThrottler tabletmanager RPC #14979

Topology

• go/vt/topo: enable concurrency for FindAllShardsInKeyspace #14670
• Improve TopoServer Performance and Efficiency For Keyspace Shards #15047

Regression

Query Serving

• use aggregation engine over distinct engine when overlapping order by #14359
• Performance Fixes for Vitess 18 #14383
• tuple: serialized form #14392
• planbuilder: use OR for not in comparisons #14607
• add foreign key as part of set statement when reserved connection is needed #14696
• fix: insert on duplicate key update missing BindVars #14728
• Subquery inside aggregration function #14844
• [release-19.0] Fix routing rule query rewrite (#15253) #15259

Throttler

• [release-19.0] Enable 'heartbeat_on_demand_duration' in local/examples (#15204) #15292

vttestserver

• [release-19.0] Fix logging issue when running in Docker with the syslog daemon disabled (#15176) #15186

Release

CLI

• [main] Add vtctldclient info to the 18.0 summary (#14259) #14265

Documentation

• Add release instructions for Milestones #14175
• Update v17 Release notes with a Breaking Change #14215

General

• add release-18.0 to golang upgrade #14133
• moving main to 19.0 snapshot #14137
• update release notes on main after releases #14171
• tooling: don't add bots to authors list #14411
• move release notes of 18 to main #14474
• v18.0.1 release notes to main #14579
• port release notes of v18.0.2, v17.0.5 and v16.0.7 to main #14840
• [release-19.0] Code Freeze for v19.0.0-RC1 #15137
• [release-19.0] Release of v19.0.0-RC1 #15139
• [release-19.0] Bump to v19.0.0-SNAPSHOT after the v19.0.0-RC1 release #15165
• [release-19.0] Code Freeze for v19.0.0 #15358

Testing

Backup and Restore

• Add a retry to remove the vttablet directory during upgrade/downgrade backup tests #14753

Build/CI

• Flakes: Shutdown vttablet before mysqld in backup tests #14647
• Tests: Fix vdiff test breakage from concurrent merge #14865
• Flakes: De-flake TestGatewayBufferingWhenPrimarySwitchesServingState #14968
• Remove usage of additional test package #15007
• Revert "exclude test from race" #15014
• Added missing tests for the sqltypes package #15056

CLI

• Fixed bug in flagutil package and added tests #15046

General

• Reduce wait time in test helpers #14476
• go/vt/tlstest: fix nilness issues #14812
• Add logging for failing tests in CI #14821
• bytes2: Add tests for StringUnsafe and Reset methods #14940
• Tests: Add test in syslogger for LOG_EMERG level #14942
• Add required tests for go/acl #14943
• Add missing test for go/bucketpool #14944
• test: adds test for acl #14956
• tests: improve coverage for go/bytes2/buffer.go #14958
• tests: add tests for go/list #14962
• tests: add tests for go/json2 #14964
• tests: add tests for go/protoutil/duration #14965
• tests: add tests to go/mathutil #14969
• tests: add tests for vitess/go/cmd/zk/internal/zkfilepath #14970
• unit test for go/sets/set.go #14973
• Add required tests for go/mysql/hex #14976
• Remove AppendFloat from go/mysql/format and add required tests #14986
• tests: add tests for go/sqlescape #14987
• tests: add tests for go/slice #14989
• tests: Add tests for go/textutil #14991
• tests: increase coverage for multiple files in vitess/go/stats to 100% #14997
• tests: add tests for zkfs utilities #15002
• Add missing tests for go/event/syslogger #15005
• fix: Unescape(Escape(str)) now returns the original string #15009
• tests: add tests for go/vt/hook #15015
• Added unit tests for the tools/codegen package #15016
• Added unit tests for the tools/releases package #15017
• tests: Add tests for go/vt/external #15023
• Move test files to regular names again #15037
• Add required tests for go/unicode2 #15051
• tests: add tests for go/mathstats #15054
• Added tests for the go/vt/callinfo package #15059
• Added tests for the vt/logz package #15060
• Add required tests for go/tb #15063
• [release-19.0] modernize various tests (#15184) #15198

Query Serving

• Fix data race in TestWarmingReads #14187
• vtgate: Allow more errors for the warning check #14421
• vtgate: Allow additional errors in warnings test #14461
• Foreign Key Fuzzer Benchmark #14542
• test: enable test in downgrade testing #14625
• Refactor Upgrade downgrade tests #14782
• Add check to avoid runtime error and add tests for go/mysql/fastparse #15000
• tests: add tests for vt/vtgate/engine/opcode #15045
• tests: add tests to go/vt/vtgate/semantics/bitset #15049
• Added test for AnalyzeStrict #15126

Throttler

• Throttler: refactor global configuration setting as throttler member #14853
• Throttler: fix race conditions in Operate() termination and in tests #14971

Topology

• FlakyFix: TestZk2Topo #14162

VReplication

• VReplication: extended e2e test for workflows with tables containing foreign key constraints #14327
• TestStreamMigrateMainflow: fix panic in test #14420
• Flaky TestFKExtWorkflow: fix Foreign Key stress test flakiness #14714
• Some VReplication e2e Refactoring #14735
• Test: Take test host/runner specs into account for VDiff diff duration test #14868
• vtctldclient CLI validation: Add e2e test to check that options to the vtctldclient commands are supported #14957
• [release-19.0] VtctldClient Reshard: add e2e tests to confirm CLI options and fix discovered issues. (#15353) #15364

vtctl

• Reduce flakiness in TestShardReplicationPositions #14708