Upon an analysis service restart, the service will backfill and recalculate for the time range specified by the MaximumAllowedAutoBackfillingSpanInHours service configuration parameter; the default is 72 hours. Starting in PI Analysis Service 2.8.0, this parameter is user configurable. Any gap that exceeds MaximumAllowedAutoBackfillingSpanInHours are not automatically backfilled or recalculated but the message from the 'Issue' section is seen as a warning. We want the service automatically backfill and recalculate the analyses for the MaximumAllowedAutoBackfillingSpanInHours even the gap is greater than MaximumAllowedAutoBackfillingSpanInHours. Currently we have two options:
Manually backfill the analysis OR
Set analysis configuration parameter MaximumAllowedAutoBackfillingSpanInHours to a time range larger than the data gap and then restart PI Analysis Service, which needs a lot of effort.