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From aaron morton <>
Subject Re: incremental backup and Priam?
Date Tue, 14 Aug 2012 20:57:36 GMT
The Priam code is looking for the <keyspace>/<columnfamily>/backups directory created
by cassandra during incremental backups. If it finds it the files are uploaded to S3. 

It's taking the built in incremental backups off node. (AFAIK)


Aaron Morton
Freelance Developer

On 15/08/2012, at 8:16 AM, Yang <> wrote:

> in the initial incremental backup implementation, 
> the hardlinking to the backup dir was in the CFS.addSSTable()  code, so it's part of
the Cassandra code.
> I looked at Priam,
> this code pretty much does the same thing as the original addSSTable() incremental backup
> so the Priam backup code operates outside of Cassandra write path?
> any insight into why this approach was chosen instead of using the incremental backup
provided by Cassandra?
> thanks
> Yang

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