Background

As the unique task worker is an execution metric customers are required to report us accurately, the need arises to define a solution that allows customers to do so, without impeding their production performance.

Currently, the history clean up strategy cleans up data that is required to calculate the unique task worker, hence it is currently not possible to count unique task workers reliably.

Acceptance criteria

• History clean up is not affecting the ability to account for UTW's
• UTW is accounted reliably
• Means to get this data (i.e. show in admin, provide query) are provided

See https://docs.google.com/document/d/17sCGB95i_iKWJ-QWU9APcdv46WclYkUVtJhwuOsgDwk/edit#heading=h.ke2fkotf1jgb for detailed requirements, an updated list of solution options and Thorben's recommendation.