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Then consider yourself surprised. Deleted data is actually deleted. Keeping it around is a huge liability.
by CydeWeys 6y ago
Then consider yourself surprised. Deleted data is actually deleted. Keeping it around is a huge liability.
- bordercases 6y agoGood SRE practices suggest keeping data of certain sorts around for awhile before the deletion is fully completed.
- Yoric 6y agoI don't know how things work these days, but a few years ago, Google's GFS didn't support deletion. The "delete" flag only meant "don't replicate this data" and it was just simpler for them to keep it around until the disk died. Source: This was published by Google in their research papers on GFS. Sorry, can't remember which paper.
- joshuamorton 6y agoWithout reading the paper, I'm about 99% positive it also would mark the data as unused, which would allow the disk space to be reclaimed and overridden. Disks aren't write once. It also likely would reindex it, meaning that you can't find it if you go looking for it unless you happen to know which disk it's in already and it hasn't been overwritten yet.
- sterlind 6y agoUnder GDPR I'm fairly certain that they've implemented actual deletion. GDPR even requires companies to go so far as to scan old tapes to delete user records on request by a 30-day deadline, iirc.
- CydeWeys 6y agoGFS is ancient obsolete technology that is no longer used (the whitepaper was published almost two decades ago, and it described a system already built and in use!). Also, I don't think you're interpreting it correctly either.