And that’s just because I stopped it. Why does it happen?
The reason is pretty easy: if the job is running, but you have a network problem – an outage, like it happened to me – the TFS Job Agent might not report the state and it may goes on for hours, even if it has released all the resource locks.
You can safely stop the job by invoking the Web Service on the TFS Application Tier – you’ll need to set the SetAnalysisJobEnabledState to FullyDisabled first and then to Enabled in order to restart with the next scheduled job.
And remember – do NOT process the TFS_Analysis OLAP cube with SSMS, as it is not supported by the Microsoft CSS.