Are you sure there is no TTL set on your data? It might explain the shrink in sstable size after compaction. Le 21 mai 2014 23:17, "Phil Luckhurst" <phil.luckhu...@powerassure.com> a écrit :
> We based the estimate on a previous controlled observation. We generated a > year's worth of one minute data for a single identifier and recorded the > size of the resulting sstable. By adding the data one month at a time we > observed that there was a linear predictable increase in the sstable size. > Using this we simply multiplied by the number of identifiers, in this case > 700, to get the 7GB estimate. > And as noted above this estimate is correct once the data is compacted to > one sstable but is wrong when there are multiple sstables. > > Phil > > > Andreas Finke wrote > > Hi Phil, > > > > there is no dump question ;) What is your size estimation based on e.g. > > what size is a column in your calculation? > > > > > > -- > View this message in context: > http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Can-SSTables-overlap-with-SizeTieredCompactionStrategy-tp7594574p7594641.html > Sent from the cassandra-u...@incubator.apache.org mailing list archive at > Nabble.com. >
