Analytics/Data Quality/status

Last update on: 2013-12-monthly

2013-09-monthly
* The Analytics team discovered that we were incorrectly tagging traffic as Wikipedia Zero and this lead to overcounting W0 traffic by approx. 10%. A joint effort by the Wikipedia Zero, Ops and Analytics team uncovered the root cause and a fix was applied.

2013-10-monthly
We created dashboards for several Wikipedia Zero partners (Orange Madagascar, Bangalink, Umniah Jordan), and identified and fixed Wikipedia Zero data issues in collaboration with the Zero team.

2013-11-monthly
We identified issues with over-counting page views, and deployed a fix in November. Data from July onward were restated.

2013-12-monthly
The team continues to spend a large amount of time on data quality. The primary effort in December was in isolating and fixing an error in WikiStats that inflated page views from July to December by a significant amount. The error was patched in early December and the statistics were recalculated.

There were also issues with Wikipedia Zero traffic and an outage caused by a single point of failure in the legacy infrastructure.