Curious question about compaction on dropped large CF tables e.g. > 100GB size.

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Curious question about compaction on dropped large CF tables e.g. > 100GB size. #237

Closed hiqsociety closed 2 years ago

hiqsociety commented 2 years ago

If i delete / drop a Column Family, i know disk space is reclaimed immediately, so when compaction happens (how do i trigger compaction?), will read / write still possible concurrently with other CF tables not deleted?

CF 1 = 1TB CF 2 = 1TB CF 3 = 1TB etc

I havent implemented it yet so just curious what's the outcome of dropping a large CF in TB size, if the compaction will be very slow and choke the other operations on other CFs or not.

Can someone answer this? Thanks. Great work!

noobpwnftw commented 2 years ago

https://github.com/facebook/rocksdb/wiki/Column-Families

hiqsociety commented 2 years ago

thx