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124 points edent | 1 comments | 12 Jan 25 20:20 UTC | HN request time: 0s | source

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abigail95 ◴[16 Jan 25 15:43 UTC] No.42726784[source]▶

Something is missing here, why do batch jobs take 13 hours? If this thing was started on an old mainframe why isn't the downtime just 5 minutes at 3:39 AM?

Exactly how much data is getting processed?

Edit: Why does rebuilding take a decade or more? This is not a complex system. It doesn't need to solve any novel engineering challenges to operate efficiently. Article does not give much insight into why this particular task couldn't be fixed in 3 months.

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1. firefoxd ◴[16 Jan 25 17:05 UTC] No.42727884[source]▶

>>42726784 #

Our systems took 8 hours to back up. Then it grew to 12 hours [0]. The system was a side project by an intern fresh out of college. Over the years, it grew into a crucial software the company relied on. I joined over 10 years later and was able to bring it down to few minutes.

[0]: https://news.ycombinator.com/item?id=38456429

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