Tasks By Assignee

Assignee: aaron (Aaron Schulz)

Switch to Active Tasks 116 Phabricator task(s).

Phabricator Link	Wiki Link	Status	Priority	Author	Assignee	Projects	Subtasks	Parent Tasks
T108253	T108253: Make sure CentralAuth login tokens work with two datacenters	resolved	Medium (orange)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	Epic Patch-For-Review MediaWiki-extensions-CentralAuth (Done) Sustainability (Tag) WMF-deploy-2015-09-08_(1.26wmf22) (Backlog) WMF-deploy-2015-09-01_(1.26wmf21) (Backlog)	T111575: Make $wgSessionCacheType and $wgMainStash caches multi-DC ready	T88445: MediaWiki active/active datacenter investigation and work (tracking)
T111264	T111264: Decouple chronology protector from authentication	resolved	Medium (orange)	GWicke (Gabriel Wicke)	aaron (Aaron Schulz)	Platform Team Legacy (Watching / External) Sustainability (Tag) Performance-Team (Radar) (Watching) Parsoid (Non-Parsing-Team Tasks) RESTBase (Backlog) Services (watching)
T111266	T111266: Make LoadBalancer slave lag check and read-only mode more robust (for example, using pt-heartbeat)	resolved	High (red)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	Sustainability (Blocked) MW-1.27-release-notes DBA (Done) Performance-Team (Blocked (old)) MW-1.27-release (WMF-deploy-2016-04-05_(1.27.0-wmf.20)) Patch-For-Review Performance Issue	T119648: Fix getLagFromPtHeartbeat() to use the pt entry for the root master, not the immediate one	T88445: MediaWiki active/active datacenter investigation and work (tracking)
T111575	T111575: Make $wgSessionCacheType and $wgMainStash caches multi-DC ready	declined	Medium (orange)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	Performance-Team (Doing (old)) Sustainability (MediaWiki-MultiDC) (Later) Epic	T134811: Consider REST with SSL (HyperSwitch/Cassandra) for session storage	T108253: Make sure CentralAuth login tokens work with two datacenters T88445: MediaWiki active/active datacenter investigation and work (tracking)
T111877	T111877: incorporate master/slave datacenter guidelines into developer docs	resolved	Medium (orange)	Spage (S Page)	aaron (Aaron Schulz)	Documentation (Organize or Reorganize Technical Documentation) Performance-Team (Next: Goal / Oct-Dec '21) MediaWiki-General		T88666: RFC: Master/slave datacenter strategy for MediaWiki
T112708	T112708: Support for master/slave FileBackend distinction in FileBackendMultiwrite	resolved	Medium (orange)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	MW-1.27-release-notes MW-1.27-release (WMF-deploy-2015-10-06_(1.27.0-wmf.2)) (Tag) MW-1.26-release (Backlog) Patch-For-Review Sustainability (Blocked) WMF-deploy-2015-09-22_(1.26wmf24) (Tag)		T88445: MediaWiki active/active datacenter investigation and work (tracking)
T113192	T113192: Consider using delayed rebound purges for CDN	resolved	Medium (orange)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	Sustainability (Doing) MW-1.27-release-notes Patch-For-Review MW-1.27-release (WMF-deploy-2015-12-15_(1.27.0-wmf.9)) (Backlog)		T88445: MediaWiki active/active datacenter investigation and work (tracking)
T113204	T113204: Smart caching logic for handling cross-DC network outages	resolved	Medium (orange)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	MW-1.27-release (WMF-deploy-2015-10-06_(1.27.0-wmf.2)) (Tag) MW-1.27-release (WMF-deploy-2015-10-13_(1.27.0-wmf.3)) (Backlog) Patch-For-Review Performance-Team (Doing (old)) Sustainability (Doing) MW-1.27-release-notes		T88445: MediaWiki active/active datacenter investigation and work (tracking)
T113916	T113916: Switch ResourceLoader file dependency tracking to MultiDC-friendly backend	open	High (red)	Krinkle (Timo Tijhof)	aaron (Aaron Schulz)	MediaWiki-ResourceLoader (Accepted Enhancement) Patch-For-Review Performance-Team (Backlog: Future Goals) Epic	T212129: Move MainStash out of Redis to a simpler multi-dc aware solution T247028: Database 'INSERT' query rate doubled (module_deps regression?) T253433: Web installer CSS fails with ServiceDisabledException T253697: Support hash-based deduplication in KeyValueDependencyStore	T270223: FY2021-2022: Enable basic Multi-DC operations for read traffic (tracking)
T119648	T119648: Fix getLagFromPtHeartbeat() to use the pt entry for the root master, not the immediate one	resolved	Low (yellow)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	Performance-Team (Doing (old)) Patch-For-Review Sustainability (Tag) MW-1.27-release (WMF-deploy-2016-01-12_(1.27.0-wmf.10)) (Backlog) Performance Issue DBA (Triage) MW-1.27-release-notes		T111266: Make LoadBalancer slave lag check and read-only mode more robust (for example, using pt-heartbeat)
T119689	T119689: Enable $wgCentralAuthUseSlaves to avoid master queries	resolved	Medium (orange)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	Performance Issue Sustainability (Tag) Patch-For-Review User-notice (Already announced/Archive)		T92357: Fix database master queries from HTTP GET/HEAD before active-active multi-dc
T121440	T121440: Dedicated post-edit cache busting cookie to prevent stale reads (session consistency)	resolved	Low (yellow)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	Performance-Team (Doing (old))		T91820: Create HTTP verb and sticky cookie DC routing in VCL
T122387	T122387: Log multi-DB transaction in MediaWiki	resolved	Medium (orange)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	Performance-Team (Doing (old)) Sustainability (Tag) Patch-For-Review Epic MW-1.27-release-notes MW-1.27-release (WMF-deploy-2016-01-19_(1.27.0-wmf.11)) (Backlog)		T114271: Audit *all* datastores to see how DR failover is handled
T125791	T125791: swiftrepl replication pass for thumbnails eqiad -> codfw	resolved	Medium (orange)	fgiunchedi (Filippo Giunchedi)	aaron (Aaron Schulz)	Patch-For-Review codfw-rollout (Backlog) codfw-rollout-Jan-Mar-2016 (In Progress) Sustainability (Tag) SRE (Backlog)		T91869: Implement a replication strategy for Swift
T129973	T129973: Dig through logs from 15 Mar 2016 read-only test and file bugs	resolved	High (red)	ori (Ori Livneh)	aaron (Aaron Schulz)	codfw-rollout-Jan-Mar-2016 (Backlog) codfw-rollout (Backlog) SRE (Backlog) Wikimedia-production-error (Resolved) Sustainability (Tag) Release-Engineering-Team (Backlog (ARCHIVED)) Performance-Team (Next: Goal / Oct-Dec '21)		T92357: Fix database master queries from HTTP GET/HEAD before active-active multi-dc
T134608	T134608: CentralAuth uses master on POST requests for API/specialpages that return false for doesWrites()	resolved	Medium (orange)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	MW-1.27-release-notes MW-1.28-release (WMF-deploy-2016-05-17_(1.28.0-wmf.2)) Patch-For-Review Sustainability (Tag) MW-1.28-release-notes		T92357: Fix database master queries from HTTP GET/HEAD before active-active multi-dc
T135027	T135027: MASTER_POS_WAIT() alternative that works cross-DC	resolved	Medium (orange)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	Epic MW-1.28-release-notes Patch-For-Review Sustainability (Tag) MW-1.28-release (WMF-deploy-2016-07-19_(1.28.0-wmf.11)) DBA (Triage) Performance-Team (Doing (old))	T138778: Upgrade mariadb in deployment-prep from Precise/MariaDB 5.5 to Jessie/MariaDB 5.10 T133385: Implement GTID replication on MariaDB 10 servers	T88445: MediaWiki active/active datacenter investigation and work (tracking)
T135170	T135170: Require POST in ?action=purge	resolved	Needs Triage (violet)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	MediaWiki-API (Needs details or plan) Community-Relations-Support (Team radar) MW-1.28-release-notes Performance Issue MW-1.28-release (WMF-deploy-2016-08-16_(1.28.0-wmf.15)) Patch-For-Review	T215131: The "right-purge" message needs to be updated since it always require confirmation T144524: problem with Purge function T143435: Purge asks for "Clear the cache of this page" for logged in users with the "purge" right	T92357: Fix database master queries from HTTP GET/HEAD before active-active multi-dc
T136218	T136218: Audit mysql database class and hhvm binding support of SSL	resolved	Medium (orange)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	Patch-For-Review Performance-Team (Doing (old)) Sustainability (Tag) SRE (Backlog) MW-1.28-release-notes MW-1.28-release (WMF-deploy-2016-08-30_(1.28.0-wmf.17))		T134809: Apache mariadb SSL/TLS for cross-datacenter writes
T136224	T136224: OATHAuth doing DB master queries on HTTP GET	resolved	Medium (orange)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	Patch-For-Review Sustainability (Tag) MW-1.28-release (WMF-deploy-2016-06-07_(1.28.0-wmf.5)) MediaWiki-extensions-OATHAuth (Backlog)		T92357: Fix database master queries from HTTP GET/HEAD before active-active multi-dc
T137326	T137326: Log post-send DB updates and make sure their frequency is acceptable	resolved	High (red)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	MW-1.28-release (WMF-deploy-2016-06-14_(1.28.0-wmf.6)) MW-1.28-release-notes MW-1.28-release (WMF-deploy-2016-06-21_(1.28.0-wmf.7)) Patch-For-Review Performance-Team (Doing (old)) Sustainability (Tag)		T88445: MediaWiki active/active datacenter investigation and work (tracking)
T150506	T150506: Avoid lazyImportLocalNames() master writes on GET requests (Run a script to backfill them once for all)	resolved	Medium (orange)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	Sustainability (MediaWiki-MultiDC) (Discuss next) MW-1.36-notes (1.36.0-wmf.36; 2021-03-23) MediaWiki-extensions-CentralAuth (Incoming) User-Majavah (Done) Patch-For-Review Performance-Team (Radar) (Watching) MW-1.37-notes (1.37.0-wmf.4; 2021-05-04) Platform Team Workboards (Clinic Duty Team) (Waiting for Review)		T154552: ApiLogin should not open master connection to centralauth DB
T151466	T151466: Performance Q2 2017/18 goal: Install and use mcrouter in deployment-prep	resolved	Low (yellow)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	Release-Engineering-Team (Watching / External) Beta-Cluster-Infrastructure (Backlog) Performance-Team (Doing (old)) Sustainability (MediaWiki-MultiDC) (Later)	T190979: build new version of mcrouter package T175418: Create new instances memc05 and memc06 running memcached	T175213: 2017/18 Annual Plan Program 8: Multi-datacenter support, Q2 goals
T151903	T151903: Special:Search performs DB writes on GET request	resolved	Lowest (sky)	EBernhardson (EBernhardson)	aaron (Aaron Schulz)	CirrusSearch (Uncategorised) Performance-Team (Radar) (Perf recommendation) MW-1.34-notes (1.34.0-wmf.5; 2019-05-14) Discovery Patch-For-Review Sustainability (MediaWiki-MultiDC) (Later) Discovery-Search (later on...)		T92357: Fix database master queries from HTTP GET/HEAD before active-active multi-dc
T154596	T154596: SpecialModifyEntity master queries on page views	duplicate	Medium (orange)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	MediaWiki-General Wikidata (incoming) Sustainability (MediaWiki-MultiDC) (Later)		T92357: Fix database master queries from HTTP GET/HEAD before active-active multi-dc
T171071	T171071: Perform testing for TLS effect on connection rate	resolved	Medium (orange)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	Sustainability (MediaWiki-MultiDC) (Discuss next) SRE (Backlog) Performance-Team (Doing (old)) DBA (Blocked external/Not db team) Patch-For-Review	T175672: Make apache/maintenance hosts TLS connections to mariadb work	T134809: Apache mariadb SSL/TLS for cross-datacenter writes
T175418	T175418: Create new instances memc05 and memc06 running memcached	resolved	Low (yellow)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	Beta-Cluster-Infrastructure (To Triage) Release-Engineering-Team (Watching / External) Sustainability (MediaWiki-MultiDC) (Later)		T151466: Performance Q2 2017/18 goal: Install and use mcrouter in deployment-prep
T177778	T177778: Improve database application performance monitoring visibility	resolved	Low (yellow)	jcrespo (Jaime Crespo)	aaron (Aaron Schulz)	Platform Team Legacy (Watching / External) Performance-Team (Radar) (Watching) DBA (Meta/Epic) observability (Inbox)
T179760	T179760: File metadata gets refreshed when accessing the file description page	resolved	Medium (orange)	Ciencia_Al_Poder (Jesús Martínez Novo)	aaron (Aaron Schulz)	Patch-For-Review Commons (Incoming) MW-1.33-notes (1.33.0-wmf.24; 2019-04-02) Multimedia (Triaged) MediaWiki-File-management (Backlog) Performance-Team (Inbox)		T92357: Fix database master queries from HTTP GET/HEAD before active-active multi-dc
T188801	T188801: Migrate wl_notificationtimestamp updates to the job queue	resolved	Medium (orange)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	MediaWiki-Watchlist (Backlog) Patch-For-Review Growth-Team (Inbox) MW-1.33-notes (1.33.0-wmf.22; 2019-03-19) Sustainability (MediaWiki-MultiDC) (Current: Performance Team)		T92357: Fix database master queries from HTTP GET/HEAD before active-active multi-dc
T191668	T191668: Define varargs in \IDatabase::buildLike() in a way phan can understand it	resolved	High (red)	Umherirrender (Umherirrender)	aaron (Aaron Schulz)	MW-1.35-notes (1.35.0-wmf.1; 2019-10-08) Wikimedia-production-error (ARCHIVED -- Shared Build Failure) (In progress) phan (Backlog) Wikimedia-Rdbms (Rdbms library) MW-1.33-notes Patch-For-Review Performance-Team (Blocked (old))
T193565	T193565: Foreign query for metawiki fails with "Table 'centralauth.page' doesn't exist" (DBConnRef mixup?)	open	Medium (orange)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	Sustainability (Incident Followup) Wikimedia-Rdbms (Rdbms library) Patch-For-Review Performance-Team (Doing: Prio Interrupt) Wikimedia-production-error (Older)	T269326: Create RequestTimeout library
T194225	T194225: Enable mcrouter on the memcached servers themselves	duplicate	Medium (orange)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	Patch-For-Review Performance-Team (Doing (old))		T97562: WANObjectCache relay daemon or mcrouter support
T196125	T196125: php-memcached 3.0 (PHP 7) incompatible with BagOStuff	resolved	Medium (orange)	Krinkle (Timo Tijhof)	aaron (Aaron Schulz)	MW-1.31-release-notes MW-1.27-release-notes MW-1.32-notes (WMF-deploy-2018-06-05 (1.32.0-wmf.7)) MW-1.30-release-notes Performance-Team (Doing (old)) SRE (Backlog) MW-1.31-release (Core) PHP 7.0 support (Backlog) MediaWiki-Platform-Team (Closed) MW-1.29-release-notes		T176370: Migrate to PHP 7 in WMF production
T205369	T205369: Investigate > 40% Save Timing regression (2018-09-05)	resolved	High (red)	Krinkle (Timo Tijhof)	aaron (Aaron Schulz)	Multi-Content-Revisions (Done) Performance-Team (Doing (old)) Platform Team Initiatives (MCR) Platform Team Workboards (Done with CPT) Performance-Team-publish (Consider write up)
T206283	T206283: Failed deferred updates should be queued as jobs if possible (Deadlock from LinksUpdate in WikiPage::updateCategoryCounts)	resolved	Medium (orange)	Krinkle (Timo Tijhof)	aaron (Aaron Schulz)	MW-1.35-notes (1.35.0-wmf.24; 2020-03-17) Platform Team Workboards (Clinic Duty Team) (External Code Review Completed) Performance-Team (Backlog: Maintenance) Wikimedia-production-error (Older) MediaWiki-Page-derived-data
T207809	T207809: PHP error "CdnPurgeJob never inserted."	resolved	Medium (orange)	Krinkle (Timo Tijhof)	aaron (Aaron Schulz)	MW-1.33-notes (1.33.0-wmf.2; 2018-10-30) Performance-Team (Doing (old)) Wikimedia-production-error (Resolved) MW-1.32-notes (Backlog) Platform Team Legacy (Watching / External) Services (watching) MediaWiki-Cache (HTTP Cache) WMF-JobQueue (Untriaged)
T212129	T212129: Move MainStash out of Redis to a simpler multi-dc aware solution	open	Medium (orange)	Joe (Giuseppe Lavagetto)	aaron (Aaron Schulz)	SRE (Acknowledged) Performance-Team (Backlog: Future Goals) User-mobrovac (Backlog) MediaWiki-General User-jijiki (St) Patch-For-Review serviceops (serviceops-radar) (Watched) Sustainability (MediaWiki-MultiDC) (Current: Performance Team)	T222851: Improve Echo seentime code for multi-DC access T229062: Look into a simple way to have global keys with db-replicated T254634: Determine and implement multi-dc strategy for ChronologyProtector T267270: Determine multi-dc strategy for CentralAuth T269324: Productionize x2 databases T274174: Add modtoken field and flags to objectcache table	T113916: Switch ResourceLoader file dependency tracking to MultiDC-friendly backend T243520: Decommission the "session redis" cluster T267581: Phasing out "redis_sessions" MediaWiki cluster and away from the memcached cluster T270223: FY2021-2022: Enable basic Multi-DC operations for read traffic (tracking) T88445: MediaWiki active/active datacenter investigation and work (tracking)
T212284	T212284: Fatal db error "Could not select database 'centralauth'" (sometimes also 'metawiki')	resolved	Medium (orange)	Reedy (Sam Reed)	aaron (Aaron Schulz)	Platform Team Workboards (Clinic Duty Team) (EM Sign Off) MediaWiki-extensions-CentralAuth (Incoming) Wikimedia-Rdbms (Rdbms library) Wikimedia-production-error (Resolved) MW-1.34-notes (1.34.0-wmf.10; 2019-06-18) Services (next) Platform Engineering (Needs Cleaning - Security, stability, performance, and scalability (TEC1)) Performance-Team (Radar) (Watching)
T215611	T215611: MediaWiki errors overloading logstash	resolved	High (red)	Marostegui (Manuel Aróstegui)	aaron (Aaron Schulz)	Wikimedia-Logstash (In Dev/Progress) SRE (Backlog) Wikimedia-production-error (Resolved) Performance-Team (Blocked (old)) observability (Inbox) Platform Engineering (Needs Cleaning - Security, stability, performance, and scalability (TEC1)) Platform Team Workboards (Done with CPT) Wikimedia-Rdbms (Untriaged)
T216496	T216496: Misleading "replica catching up" error when master DB is down	resolved	Low (yellow)	Bawolff (Brian Wolff)	aaron (Aaron Schulz)	Performance-Team (Doing (old)) Wikimedia-Rdbms (Rdbms library) MW-1.34-notes (1.34.0-wmf.20; 2019-08-27) patch-welcome (Backlog) Patch-For-Review
T221159	T221159: FY18/19 TEC1.6 Q4: Improve or replace the usage of GTID_WAIT with pt-heartbeat in MW	declined	High (red)	mobrovac (Marko Obrovac)	aaron (Aaron Schulz)	Goal DBA (Meta/Epic) Patch-For-Review MW-1.36-notes (1.36.0-wmf.20; 2020-12-01) Wikimedia-Rdbms (Rdbms: MySQL support) User-Kormat (Watching 👀) Performance-Team (Radar) (Watching) User-mobrovac (Backlog) Services (watching)	T224422: Implement logic to filter bogus GTIDs T224419: Allow MediaWiki to know the "real" DB master	T88445: MediaWiki active/active datacenter investigation and work (tracking)
T224422	T224422: Implement logic to filter bogus GTIDs	resolved	High (red)	mobrovac (Marko Obrovac)	aaron (Aaron Schulz)	Performance-Team (Inbox) Services (watching) Wikimedia-Rdbms (Rdbms: MySQL support) MW-1.34-notes (1.34.0-wmf.25; 2019-10-01) Platform Team Workboards (Clinic Duty Team) (External Code Review Completed) Platform Team Initiatives (Multi-DC (TEC1)) MW-1.35-notes (1.35.0-wmf.2; 2019-10-15)		T221159: FY18/19 TEC1.6 Q4: Improve or replace the usage of GTID_WAIT with pt-heartbeat in MW
T226785	T226785: Phase out use of vary-revision with more specific flags and improve related logging	resolved	High (red)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	MW-1.34-notes (1.34.0-wmf.20; 2019-08-27) MediaWiki-Parser (Backlog) Performance-Team (Blocked (old)) Platform Team Workboards (Clinic Duty Team) (External Code Review Completed)
T227376	T227376: Move callers away from getMainObjectStash() that do not need it	open	Medium (orange)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	Sustainability (MediaWiki-MultiDC) (Later) Platform Team Workboards (External Code Reviews) (External Code Review Needed) Patch-For-Review WMF-General-or-Unknown Performance-Team (Backlog: Maintenance)	T236414: CPT review/work for MediaWiki caching class maintenance ramp-up
T228307	T228307: Create Default MainStash Solution	resolved	Needs Triage (violet)	EvanProdromou (Evan)	aaron (Aaron Schulz)	MediaWiki-Cache (Wiring for MediaWiki)
T229062	T229062: Look into a simple way to have global keys with db-replicated	resolved	Medium (orange)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	MediaWiki-Cache (libs/objectcache) MW-1.35-notes (1.35.0-wmf.34; 2020-05-26) Performance-Team (Blocked (old))		T212129: Move MainStash out of Redis to a simpler multi-dc aware solution
T229266	T229266: Language::uc/lc return type correctness and perf review	resolved	Needs Triage (violet)	Krinkle (Timo Tijhof)	aaron (Aaron Schulz)	Platform Team Workboards (Clinic Duty Team) (External Code Review Completed) Performance-Team (Doing (old)) MediaWiki-Internationalization (Backlog) MW-1.35-notes (1.35.0-wmf.3; 2019-10-22)
T229456	T229456: Enable MYSQLI_CLIENT_FOUND_ROWS option for consistency with other RDBMS backends	resolved	Medium (orange)	Krinkle (Timo Tijhof)	aaron (Aaron Schulz)	MW-1.34-notes (1.34.0-wmf.20; 2019-08-27) Performance-Team (Radar) (Watching) Wikimedia-Rdbms (Rdbms library) Platform Team Workboards (Clinic Duty Team) (External Code Review Completed)
T229694	T229694: Warning: EchoModerationController::moderate: transaction round 'MWCallableUpdate::doUpdate' still running	resolved	Medium (orange)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	Performance-Team (Blocked (old)) MediaWiki-General MW-1.34-notes (1.34.0-wmf.20; 2019-08-27) Platform Team Workboards (Clinic Duty Team) (External Code Review Completed) Regression
T230025	T230025: Create HtmlCacheUpdater service class to normalize purging code	resolved	Medium (orange)	daniel (Daniel Kinzler)	aaron (Aaron Schulz)	MediaWiki-Page-derived-data Platform Team Workboards (Clinic Duty Team) (External Code Review In Progress) MW-1.35-notes (1.35.0-wmf.28; 2020-04-14) User-Daniel (Inbox) Performance-Team (Doing (old))
T230065	T230065: DBQueryError "Commands out of sync" from Rdbms\Database::close	resolved	Medium (orange)	brennen (Brennen Bearnes)	aaron (Aaron Schulz)	Wikimedia-Rdbms (Rdbms library) MW-1.34-notes (1.34.0-wmf.20; 2019-08-27) Performance-Team (Doing (old)) Wikimedia-production-error (Aug2019/1.34.wmf.17+)
T230245	T230245: Make SwiftFileBackend::doStoreInternal defer the opening of file handles to stay in the concurrency limit	open	Medium (orange)	Dzahn (Daniel Zahn)	aaron (Aaron Schulz)	SRE-swift-storage (Inbox) Platform Engineering (Icebox) SRE (Backlog) Commons (Incoming) ConfirmEdit (CAPTCHA extension) (Backlog) Editing-team (Freezer) Patch-For-Review MediaWiki-File-management (Backlog) Performance-Team (Backlog: Maintenance)
T230800	T230800: Improve Rdbms/LoadBalance and its LoadMonitor logic	resolved	High (red)	Krinkle (Timo Tijhof)	aaron (Aaron Schulz)	Platform Team Workboards (Clinic Duty Team) (External Code Review Completed) Wikimedia-Rdbms (Rdbms library) Patch-For-Review MW-1.35-notes (1.35.0-wmf.23; 2020-03-10) Performance-Team (Radar) (Perf recommendation)
T231162	T231162: DBQueryError from ExternalStoreDB::fetchBlob: Table 'enwiki.blobs' doesn't exist	resolved	Low (yellow)	Urbanecm	aaron (Aaron Schulz)	MW-1.34-notes (1.34.0-wmf.22; 2019-09-10) Performance-Team (Doing (old)) Platform Team Workboards (Clinic Duty Team) (External Code Review Completed) MediaWiki-Revision-backend (ExternalStore)
T232128	T232128: Make MultiHttpClient use CURLMOPT_MAX_HOST_CONNECTIONS and reuse connections	resolved	Medium (orange)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	Performance-Team (Radar) (Perf recommendation) MW-1.35-notes (1.35.0-wmf.1; 2019-10-08) MediaWiki-libs-HTTP Platform Team Workboards (Clinic Duty Team) (External Code Review Completed)	T192166: Drop HHVM support from MediaWiki
T234583	T234583: WANObjectCache fails to store the `null` value	resolved	Needs Triage (violet)	Krinkle (Timo Tijhof)	aaron (Aaron Schulz)	Performance-Team (Doing (old)) MW-1.35-notes (1.35.0-wmf.18; 2020-02-04) MediaWiki-Cache (libs/objectcache)
T235188	T235188: Preemptive refresh in getMultiWithSetCallback() and getMultiWithUnionSetCallback() pollutes cache	resolved	High (red)	Nikerabbit (Niklas Laxström)	aaron (Aaron Schulz)	MW-1.35-notes (1.35.0-wmf.18; 2020-02-04) MediaWiki-Cache (libs/objectcache) Platform Team Workboards (Clinic Duty Team) (External Code Review In Progress) User-ArielGlenn (Short-term backlog) Patch-For-Review affects-translatewiki.net (Mitigated) serviceops (Incoming 🐫)
T235705	T235705: Add BagOStuff metrics for read/write operations (bytes, key "class") grouped by type/ID	resolved	High (red)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	MW-1.36-notes (1.36.0-wmf.28; 2021-01-26) MediaWiki-Cache (libs/objectcache) Performance-Team (Doing (old))
T235956	T235956: Title::isSingleRevRedirect should be atomic	resolved	Needs Triage (violet)	Krinkle (Timo Tijhof)	aaron (Aaron Schulz)	Performance-Team (Radar) (Watching) Platform Team Workboards (Clinic Duty Team) (External Code Review Completed) MediaWiki-Revision-backend (Untriaged) MW-1.35-notes (1.35.0-wmf.8; 2019-11-26) Sustainability (Tag)
T236412	T236412: Refactor BagOStuff to use a more storage/multi-DC aware interface hierarchy	open	Medium (orange)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	MW-1.35-notes (1.35.0-wmf.23; 2020-03-10) Performance-Team (Backlog: Future Goals) MediaWiki-Cache (libs/objectcache) Platform Engineering Roadmap Decision Making (Icebox) Patch-For-Review
T244877	T244877: WANObjectCache::getWithSetCallback seems not to set objects when fetching data is slow	resolved	Medium (orange)	Joe (Giuseppe Lavagetto)	aaron (Aaron Schulz)	Performance-Team (Inbox) serviceops (Incoming 🐫) MediaWiki-Cache (libs/objectcache) SRE (Backlog) Sustainability (Incident Followup) MW-1.35-notes (1.35.0-wmf.30; 2020-04-28)
T245800	T245800: AjaxResponse::checkLastModified uses $wgUser	resolved	Needs Triage (violet)	DannyS712	aaron (Aaron Schulz)	Platform Engineering (Icebox) User-DannyS712 (Resolved (deprecation)) MediaWiki-General Technical-Debt (Unsorted)		T243708: Mediawiki core needs uses of global $wgUser removed
T246077	T246077: SQlite has wrong DB structure after upgrading to 1.35	resolved	High (red)	Peter.ovchyn (Peter.ovchyn)	aaron (Aaron Schulz)	MW-1.35-release (Blocker) MW-1.35-notes (1.35.0-wmf.25; 2020-03-24) MediaWiki-Installer (General) SQLite (Backlog) MediaWiki-User-management (Backlog) Platform Team Workboards (Clinic Duty Team) (External Code Review Completed)		T245995: Sqlite Integration tests fail on macOS php 7.4
T247028	T247028: Database 'INSERT' query rate doubled (module_deps regression?)	resolved	High (red)	Krinkle (Timo Tijhof)	aaron (Aaron Schulz)	MediaWiki-ResourceLoader (Confirmed Problem) Performance Issue Performance-Team (Next: Goal / Oct-Dec '21) Sustainability (Incident Followup) MW-1.35-notes (1.35.0-wmf.34; 2020-05-26)		T113916: Switch ResourceLoader file dependency tracking to MultiDC-friendly backend
T248147	T248147: Wikimedia\Rdbms\Database::normalizeUpsertKeys called with deprecated parameter style: the unique key array should be a string or array of string arrays generating 2 million warnings in 24 hours	resolved	High (red)	Marostegui (Manuel Aróstegui)	aaron (Aaron Schulz)	Wikidata-Campsite (Wikidata-Campsite-Iteration-∞ (On Hold)) (Done) Wikidata (in progress) Platform Team Workboards (Clinic Duty Team) (External Code Review Completed) Growth-Team (Inbox) WMF-General-or-Unknown AntiSpoof (Backlog) PageCuration (Backlog) ProofreadPage (Backlog) MW-1.35-notes (1.35.0-wmf.30; 2020-04-28)
T249069	T249069: Fix problem of self::$executeContext sometimes being null in DeferredUpdates::handleUpdateQueue	resolved	High (red)	Krinkle (Timo Tijhof)	aaron (Aaron Schulz)	MediaWiki-General MW-1.35-notes (1.35.0-wmf.32; 2020-05-12) Performance-Team (Doing (old))		T246358: Jenkins no longer fails build if mw-error.log or mw-dberror.log are non-empty
T253697	T253697: Support hash-based deduplication in KeyValueDependencyStore	declined	Medium (orange)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	MediaWiki-ResourceLoader (Accepted Enhancement) Performance-Team (Doing (old))		T113916: Switch ResourceLoader file dependency tracking to MultiDC-friendly backend
T255492	T255492: Consider making ILoadBalancer::getServerConnection private or internal	resolved	Low (yellow)	Krinkle (Timo Tijhof)	aaron (Aaron Schulz)	Wikimedia-Rdbms (Rdbms library) Platform Engineering Roadmap Decision Making (Icebox) MW-1.38-notes (1.38.0-wmf.6; 2021-10-26) Developer Productivity Performance-Team (Backlog: Maintenance)
T256287	T256287: "Database selection is disallowed to enable reuse" is badly worded	resolved	Low (yellow)	Reedy (Sam Reed)	aaron (Aaron Schulz)	MW-1.35-notes Wikimedia-Rdbms (Untriaged) Platform Team Workboards (Clinic Duty Team) (Doing(WIP:5)) Patch-For-Review MW-1.36-notes (1.36.0-wmf.3; 2020-08-04) MW-1.34-notes Performance-Team (Doing (old)) Developer Productivity
T259520	T259520: Lots of Wikimedia\Rdbms\LoadBalancer::pickReaderIndex: all replica DBs lagged. Switch to read-only mode	resolved	Medium (orange)	Marostegui (Manuel Aróstegui)	aaron (Aaron Schulz)	Performance-Team (Doing (old)) MW-1.36-notes (1.36.0-wmf.18; 2020-11-17) Platform Team Workboards (Clinic Duty Team) (Ready (WIP:5))
T265386	T265386: Rewrite LoadMonitor to better handle cache regeneration and improve separation of concern	open	Lowest (sky)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	Wikimedia-Rdbms (Rdbms library) Performance-Team (Backlog: Maintenance) Patch-For-Review
T269161	T269161: Disallow direct "BEGIN"/"COMMIT"/"ROLLBACK" via Database::query()	open	Lowest (sky)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	Platform Engineering (Tracking/Watching) Wikimedia-Rdbms (Rdbms library) Performance-Team (Backlog: Maintenance)
T273006	T273006: MediumSpecificBagOStuff.php Undefined offset errors	resolved	Unbreak Now! (pink)	dancy (Ahmon Dancy)	aaron (Aaron Schulz)	Platform Team Workboards (Clinic Duty Team) (Ready (WIP:5)) MediaWiki-Cache (libs/objectcache) User-brennen (Logs/Train) MW-1.36-notes (1.36.0-wmf.29; 2021-02-02) Wikimedia-production-error (Jan 2021)
T274174	T274174: Add modtoken field and flags to objectcache table	resolved	High (red)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	Patch-For-Review Performance-Team (Doing: Goal-oriented) MediaWiki-Cache (libs/objectcache) MW-1.37-notes (1.37.0-wmf.15; 2021-07-19)	T288998: Significant ParserCache space increase after 2021-08-12 (1.37.0-wmf.18 regression)	T212129: Move MainStash out of Redis to a simpler multi-dc aware solution
T277056	T277056: TypeError: Argument 1 passed to Wikimedia\Rdbms\TransactionProfiler::recordConnection() must be of the type string, null given	resolved	High (red)	matmarex (Bartosz Dziewoński)	aaron (Aaron Schulz)	Performance-Team (Doing: Prio Interrupt) Platform Engineering (Tracking/Watching) MediaWiki-General MW-1.36-notes (1.36.0-wmf.35; 2021-03-16) Wikimedia-Rdbms (Rdbms library)
T278392	T278392: Storage solution for cross-datacenter tokens	open	Medium (orange)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	Patch-For-Review MediaWiki-extensions-OAuth (Backlog) Performance-Team (Next: Goal / Oct-Dec '21) MediaWiki-extensions-CentralAuth (Incoming) ConfirmEdit (CAPTCHA extension) (Backlog) Sustainability (MediaWiki-MultiDC) (Later)		T267270: Determine multi-dc strategy for CentralAuth
T281451	T281451: Wikimedia\Rdbms\DBTransactionError: Transaction round stage must be 'cursory' (not 'within-rollback-callbacks')	open	Medium (orange)	LarsWirzenius (Lars Wirzenius)	aaron (Aaron Schulz)	Patch-For-Review Performance-Team (Doing: Prio Interrupt) Wikimedia-production-error (Apr 2021) MW-1.38-notes (1.38.0-wmf.7; 2021-11-02) Wikimedia-Rdbms (Rdbms library) Platform Team Workboards (Clinic Duty Team) (Later)	T297424: Reduce LBFactory::rollbackPrimaryChanges() callers in core
T281480	T281480: SqlBlobStore no longer caching blobs (DBConnectionError Too many connections)	resolved	Unbreak Now! (pink)	LarsWirzenius (Lars Wirzenius)	aaron (Aaron Schulz)	Wikimedia-production-error (Untriaged) DBA (Triage) Wikimedia-Incident (Active investigation) MediaWiki-Cache (libs/objectcache) MediaWiki-Revision-backend (Untriaged) Performance-Team (Inbox) MW-1.37-notes (1.37.0-wmf.4; 2021-05-04)
T283029	T283029: FlaggableWikiPage::preloadPreparedEdit() does not actually carry over the parser output, leading to double parses on save	open	Medium (orange)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	MediaWiki-Page-derived-data Platform Engineering (Tracking/Watching) MediaWiki-extensions-FlaggedRevs (Backlog) Performance-Team (Backlog: Maintenance)
T294969	T294969: Deprecate and remove Database::lockTables and Database::unlockTables	open	Medium (orange)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	Wikimedia-Rdbms (Rdbms library) Performance-Team (Backlog: Maintenance) MW-1.38-notes (1.38.0-wmf.17; 2022-01-10) Patch-For-Review
T297424	T297424: Reduce LBFactory::rollbackPrimaryChanges() callers in core	open	Medium (orange)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	Wikimedia-Rdbms (Wiring for MediaWiki) Performance-Team (Doing: Prio Interrupt) Platform Engineering (Inbox) Patch-For-Review		T281451: Wikimedia\Rdbms\DBTransactionError: Transaction round stage must be 'cursory' (not 'within-rollback-callbacks')
T36156	T36156: SiteStatsInit::refresh() triggered inappropriately, caused downtime	resolved	Medium (orange)	tstarling (Tim Starling)	aaron (Aaron Schulz)	Wikimedia-Rdbms (Usage problem) Platform Engineering (Inbox) Sustainability (Incident Followup) Performance-Team (Radar) (Watching)
T88492	T88492: Devise caching (memcached) strategy for multi-DC mediawiki	resolved	Medium (orange)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	MediaWiki-Cache (Untriaged) Performance-Team (Backlog: Maintenance) Sustainability (Tag)		T88445: MediaWiki active/active datacenter investigation and work (tracking)
T88493	T88493: Devise stashing strategy for multi-DC mediawiki	resolved	Medium (orange)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	WMF-deploy-2015-07-21_(1.26wmf15) (Backlog) WMF-deploy-2015-06-30_(1.26wmf12) MW-1.26-release (Backlog) WMF-deploy-2015-08-11_(1.26wmf18) (Backlog) Patch-For-Review Sustainability (Doing) MediaWiki-Core-Team		T88445: MediaWiki active/active datacenter investigation and work (tracking)
T88506	T88506: Make FileRepo file cache misses use slaves instead of the master	resolved	Needs Triage (violet)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	Patch-For-Review MediaWiki-Core-Team		T88445: MediaWiki active/active datacenter investigation and work (tracking)
T88634	T88634: Make a ReplicatedBagOStuff class for multi-DC use	resolved	Medium (orange)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	MediaWiki-Core-Team Patch-For-Review		T88445: MediaWiki active/active datacenter investigation and work (tracking)
T88635	T88635: ObjectCacheSessionHandler should avoid pointless writes in write()	resolved	Medium (orange)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	Patch-For-Review MediaWiki-Core-Team		T88445: MediaWiki active/active datacenter investigation and work (tracking)
T88666	T88666: RFC: Master/slave datacenter strategy for MediaWiki	resolved	Medium (orange)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	Sustainability (MediaWiki-MultiDC) (Later) Performance-Team (Inbox) TechCom-RFC (TechCom-RFC-Closed) (Implemented)	T111877: incorporate master/slave datacenter guidelines into developer docs	T88445: MediaWiki active/active datacenter investigation and work (tracking)
T89184	T89184: Remove cache anti-dependencies	resolved	Medium (orange)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	Patch-For-Review MediaWiki-Core-Team		T88445: MediaWiki active/active datacenter investigation and work (tracking)
T89308	T89308: Create a local job class that enqueues jobs to final location	resolved	Medium (orange)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	Patch-For-Review MediaWiki-Core-Team		T88445: MediaWiki active/active datacenter investigation and work (tracking)
T89389	T89389: Try to avoid doCascadeProtectionUpdates() call on page view	resolved	Needs Triage (violet)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	MediaWiki-Core-Team		T88445: MediaWiki active/active datacenter investigation and work (tracking)
T91279	T91279: Augment user_touched with an in-memory field	resolved	Medium (orange)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	MediaWiki-Core-Team MediaWiki-General		T88445: MediaWiki active/active datacenter investigation and work (tracking)
T91284	T91284: Avoid wl_notificationtimestamp updates on page views	resolved	Medium (orange)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	Sustainability (Blocked) MediaWiki-Watchlist (Backlog) WMF-deploy-2015-07-21_(1.26wmf15) (Backlog) Patch-For-Review MW-1.26-release (Backlog)		T88445: MediaWiki active/active datacenter investigation and work (tracking)
T91815	T91815: Audit cache usage to see what can be DC-local and what needs cross-DC purges	resolved	Medium (orange)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	Sustainability (Doing) Patch-For-Review	T97335: Make CachingSiteStore use WANObjectCache	T88445: MediaWiki active/active datacenter investigation and work (tracking)
T91816	T91816: Add code to enable setting sticky DC cookies for POST requests	resolved	Medium (orange)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	MediaWiki-General MW-1.27-release (WMF-deploy-2015-10-06_(1.27.0-wmf.2)) (Tag) Sustainability (Tag) MW-1.27-release-notes Patch-For-Review Performance-Team (Inbox)		T88445: MediaWiki active/active datacenter investigation and work (tracking) T91820: Create HTTP verb and sticky cookie DC routing in VCL
T91819	T91819: Use local jobqueue class for jobs enqueued on pages views	resolved	Medium (orange)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	MediaWiki-Core-JobQueue Sustainability (Tag)		T88445: MediaWiki active/active datacenter investigation and work (tracking)
T91837	T91837: Consider moving various DB writes on page views to using local jobs	resolved	Medium (orange)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	Sustainability (Tag)		T88445: MediaWiki active/active datacenter investigation and work (tracking)
T91869	T91869: Implement a replication strategy for Swift	resolved	High (red)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	SRE (Backlog) MW-1.27-release (WMF-deploy-2016-03-08_(1.27.0-wmf.16)) Patch-For-Review codfw-rollout-Jan-Mar-2016 (Backlog) MW-1.27-release-notes codfw-rollout (Backlog) Sustainability (Tag) MW-1.27-release (WMF-deploy-2016-03-15_(1.27.0-wmf.17))	T125791: swiftrepl replication pass for thumbnails eqiad -> codfw T119651: Set $wmfSwiftCodfwConfig in PrivateSettings	T88445: MediaWiki active/active datacenter investigation and work (tracking)
T91870	T91870: Figure out a replication strategy for ElasticSearch	resolved	Medium (orange)	aaron (Aaron Schulz)	aaron (Aaron Schulz)	Sustainability (Tag)		T88445: MediaWiki active/active datacenter investigation and work (tracking)

... further results