Have some jobs that collect statistics from SQL Server Agent job history, looking for spikes and trends in data integration. Over the weekend, those stat collection jobs failed.
Turns out there were jobs that reported a dramatic ‘negative’ duration.
The cause, this jobs had started at 2:00 AM Sunday morning, then the Daylight Savings Time kicks in. The job finishes 4 minutes later, but by then it’s actually ~56 minutes earlier than the start time. For some reason this gets reported as ~-3976 days, 21 hours… Then an hour later, it’s 2:00 AM again, and the job runs normally.
Fun stuff!
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