Take a look at the following article: http://www.datastax.com/dev/blog/when-to-use-leveled-compaction
You'll want to monitor your IOPS for a while to make sure you can spare the overhead before you try it. Certainly one at a time on column families and only where the use case makes sense given the above. On Thu, Aug 22, 2013 at 9:58 PM, Lucas Fernandes Brunialti < lbrunia...@igcorp.com.br> wrote: > Hello, > > I also have some doubts about changing to leveled compaction: > > 1) Is this change computationally expensive? My sstables have around 7gb > of data, I'm afraid the nodes won't handle the pressure of compactions, > maybe dying by OOM or getting an extremely high latency during the > compactions... > > 2) How long does this transition takes? I mean, to finish the splitting of > these sstables and all the compactions needed... I wanted to know this to > make a fair comparison of which compaction algorithm is better for my data. > > 3) And finally, which would be an optimal size for the sstables, that LCS > parameter? > > I'm running a 8 node cluster on aws (ec2 m1.xlarge), using ephemeral > drives and cassandra version 1.2.3. > > I will really appreciate the help! :) > > Lucas Brunialti. > Thanks much Rob! > > Brian > > > > -- > View this message in context: > http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Continue-running-major-compaction-after-switching-to-LeveledCompactionStrategy-tp7589839p7589846.html > Sent from the cassandra-u...@incubator.apache.org mailing list archive at > Nabble.com. >
