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Data Engineering

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Revision as of 19:26, 12 November 2021 by imported>ODimitrijevic
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The Wikimedia Foundation's Data Engineering team is part of the Technology department.

We provide the Wikimedia analytics data platform, making Wikimedia related data available for querying and analysis to both WMF and the different Wiki communities and stakeholders. We develop infrastructure so all our users can access data in a self-service fashion that is consistent with the values of the movement.

We keep all our documentation here on Wikitech. See also this FAQ.

About us - Data Engineering/Team

Our Mission

Our team provides a self-service, privacy-aware data platform that empowers people to gain data-driven insights and build better product experiences for Wikimedia communities.


If you have questions about our work or the infrastructure we provide, you can contact us in two ways:

Work organization

The analytics team uses Phabricator to track its projects.



We maintain the big data platform including the data lake, ingestion and processing pipelines, as well as a number of systems to explore and visualize the data.

File:WMF Analytics Data Platform 2021 v1.png

System name and link Type Accessibility
Archiva Repository for Java archives Private
AQS - Analytics Query Service REST API for analytics data Public
Clients (stat100X) Analytics client nodes to access Hadoop and various services Private
Cluster (Hadoop, Gobblin, Hive, Oozie, Spark...) Hadoop Private
Dashiki Framework for building dashboards Public
Druid Data storage engine optimized for exploratory analytics Private
EventLogging Ad-hoc streaming pipeline Private
EventStreams Mediawiki events streams Public
Hue Web interface for Hive, Oozie, and other Cluster services Private
Kafka Data transport and streaming system Private
MariaDB Data storage for MediaWiki replicas and EventLogging Private
Matomo (formerly known as Piwik) Small-scale web analytics platform Private
Presto Big data high performance sql query engine Private
ReportUpdater Job Scheduler Private
Superset Web interface for data visualization and exploration Private
Jupyter Hosted notebooks for data analysis Private
Turnilo Web interface for exploring data stored in Druid Private
Wikistats (1 and 2) Community Dashboard with high-level metrics Public

The list of scheduled manual maintenance tasks are documented here.

Try it out! Analytics/Tutorials

We'd rather have you having fun with our data :)

Please check the link above for something that might help you, and let us know if you don't find what you're after.

Table of Content

Go to the Analytics/TOC page to have a list of all pages we have under Analytics.