Hi Jacek,

Thanks for taking the lead on this.

There was importing of SSTables introduced in 4.0 via
StorageService#importNewSSTables. The "problem" with this is that
SSTables need to be physically located at disk so Cassandra can read
them. If a backup is taken and SSTables are uploaded to, for example,
S3 bucket, then upon restore, all these SSTables need to be downloaded
first and then imported. What about downloading them / importing them
directly from S3? Or any custom source for that matter? Importing of
SSTables is a very nice feature in 4.0, we do not need to copy / hard
link / refresh, it is all handled internally.

I am not sure if your work is related to this idea but I would
appreciate it if this is pluggable as well for the sake of simplicity
and effectiveness as we would not have to download all sstables before
importing them.

If it is not related, feel free to skip that completely and I guess I
would have to try to push that forward myself.

Regards


On Fri, 22 Oct 2021 at 10:24, Jacek Lewandowski
<lewandowski.ja...@gmail.com> wrote:
>
> I'd like to start a discussion about SSTable format API proposal (CEP-17)
>
> Jira: https://issues.apache.org/jira/browse/CASSANDRA-17056
> CEP: 
> https://cwiki.apache.org/confluence/display/CASSANDRA/CEP-17%3A+SSTable+format+API
>
> Thanks,
> Jacek
>
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