You are browsing a read-only backup copy of Wikitech. The live site can be found at

Dumps: Difference between revisions

From Wikitech-static
Jump to navigation Jump to search
imported>Wolfgang Kandek
No edit summary
imported>Neil P. Quinn-WMF
(Update link destination)
Line 4: Line 4:
=== Daily checks ===
=== Daily checks ===
Dumps maintainers should watch or check a few things every day:
Dumps maintainers should watch or check a few things every day:
* email to the ops-dumps mail alias (get on it! [[SRE/SRE_Clinic_Duty#Mail_aliases]])
* email to the ops-dumps mail alias (get on it! [[SRE/Clinic_Duty#Mail_aliases]])
* [ xmldatadumps-l mailing list]
* [ xmldatadumps-l mailing list]
* [ phabricator dumps workboard]
* [ phabricator dumps workboard]

Revision as of 18:31, 27 August 2021

These docs are for maintainers of the various dumps. Information for users of the dumps can be found on metawiki. Information for developers can be found on

Daily checks

Dumps maintainers should watch or check a few things every day:

Dumps types

We produce several types of dumps. For information about deployment of updates, architecture of the dumps, and troubleshooting each dump type, check the appropriate entry below.

  • xml/sql dumps which contain revision metadata and content for public Wikimedia projects, along with contents of select sql tables
  • adds/changes dumps which contain a daily xml dump of new pages or pages with new revisions since the previous run, for public Wikimedia projects
  • Wikidata entity dumps which contain dumps of 'entities' (Qxxx) in various formats, and a dump of lexemes, run once a week.
  • category dumps which contain weekly full and daily incremental category lists for public Wikimedia projects, in rdf format
  • other miscellaneous dumps including content translation dumps, cirrus search dumps, and global block information.

Other datasets are also provided for download, such as page view counts; these datasets are managed by other folks and are not documented here.


  • Dumps snapshot hosts that run scripts to generate the dumps
  • Dumps datastores where the snapshot hosts write intermediate and final dump output files, which are later published to our web servers
  • Dumps servers that provide the dumps to the public, to our mirrors, and via nfs to Wikimedia Cloud Services and stats host users

Adding new dumps

If you are interested in adding a new dumpset, please check the guidelines (still in draft form).

If you are working with wikibase dumps of some sort, you might want to look at a code walkthrough; see Dumps/Wikibase dumps overview.

Testing changes to the dumps or new scripts

See Dumps/Testing for more about this.


If you are adding a mirror, see Dumps Mirror setup .