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Analysis Service: how is the auto-backfilling starttime determined?

Question asked by Roger Palmen on Nov 16, 2018
Latest reply on Nov 21, 2018 by Roger Palmen

I've been searching through documentation, techsupport and PI Square, but no details found.

When i restart the Analysis engine, the AutoBackfill starts. However, it is unclear to me how the starttime is determined. Just had a case where i needed to restart the service (why is worth another post), and i started backfilling all my analysis with a starttime of about 1 month ago.

The configuration setting "MaximumAllowedAutoBackfillingSpanInHours" ( ) does limit this effectively to 72 hours. But the last runtime of most analysis is seconds, minutes, or hours ago at most, the service was down only for 30 seconds, so it should not need to backfill almost month...