https://bugzilla.wikimedia.org/show_bug.cgi?id=65500
Bug ID: 65500
Summary: Add sampling support in EventLogging
Product: Analytics
Version: unspecified
Hardware: All
OS: All
Status: NEW
Severity: normal
Priority: Unprioritized
Component: EventLogging
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected],
[email protected], [email protected],
[email protected], [email protected],
[email protected]
Web browser: ---
Mobile Platform: ---
Different teams have implemented ad-hoc solutions to introduce sampling in
EventLogging in order to perform measurements of the usage of features where a
sample provides sufficient data to answer a research question.
In some cases, sampling needs to be applied to all events (so that, for
example, only 1 out of 1000 events is logged). In other cases, unique clients
need to be sampled by setting a session token so that only data for clients
included in the sample is collected.
This pattern is sufficiently common to justify the creation of a general
purpose solution to the problem (the most recent request for sampled data is
[1]). The desired sampling method and rate could be specified via a dedicated
element of a JSON schema; by default no sampling would be applied.
[1] http://lists.wikimedia.org/pipermail/analytics/2014-May/002053.html
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