> 1. If I already have a Cassandra cluster running, would changing the > incremental_backups parameter in the cassandra.yaml of each node, and then > restart it do the trick? Yes it is a per node setting.
> 2. Assuming I am creating a daily snapshot, what is the gain from setting > incremental backup to true? Better point in time recovery on a node. Cheers ----------------- Aaron Morton Freelance Developer @aaronmorton http://www.thelastpickle.com On 29/04/2012, at 6:41 PM, Tamar Fraenkel wrote: > I want to add a couple of questions regrading incremental backups: > 1. If I already have a Cassandra cluster running, would changing the > incremental_backups parameter in the cassandra.yaml of each node, and then > restart it do the trick? > 2. Assuming I am creating a daily snapshot, what is the gain from setting > incremental backup to true? > > Thanks, > Tamar > > Tamar Fraenkel > Senior Software Engineer, TOK Media > > <tokLogo.png> > > ta...@tok-media.com > Tel: +972 2 6409736 > Mob: +972 54 8356490 > Fax: +972 2 5612956 > > > > > > On Sat, Apr 28, 2012 at 4:04 PM, Roshan <codeva...@gmail.com> wrote: > Hi > > Currently I am taking daily snapshot on my keyspace in production and > already enable the incremental backups as well. > > According to the documentation, the incremental backup option will create an > hard-link to the backup folder when new sstable is flushed. Snapshot will > copy all the data/index/etc. files to a new folder. > > *Question:* > What will happen (with enabling the incremental backup) when crash (due to > any reason) the Cassandra before flushing the data as a SSTable (inserted > data still in commitlog). In this case how can I backup/restore data? > > Do I need to backup the commitlogs as well and and replay during the server > start to restore the data in commitlog files? > > Thanks. > > > > -- > View this message in context: > http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Cassandra-backup-queston-regarding-commitlogs-tp7508823.html > Sent from the cassandra-u...@incubator.apache.org mailing list archive at > Nabble.com. >
