On Mon, Oct 10, 2011 at 10:08 AM, Günter Ladwig <guenter.lad...@kit.edu> wrote: > Hi, > > I couldn't find anything on this issue, but maybe my google-fu is weak. > > I'm running a Cassandra 1.0.0-rc2 cluster with compression enabled for all of > the two CFs I have right now. The load on a single node is about 32GB (disk > is 80GB per node). > > Whenever I try to run a compaction using nodetool on one of the CFs, I get > the message "insufficient space to compact all requested files" in the log > (it goes on to compact some SSTables, but not all). As not even half of the disk is used, compaction should be possible, right? Or does Cassandra use the uncompressed size to check whether there is enough space or not? I estimate that the data is compressed by a factor of about 3x.
We do use the uncompressed size to check if there is enough room to compact, which is a bug. I've created https://issues.apache.org/jira/browse/CASSANDRA-3338 to fix it. Thanks for the report. -- Sylvain > > Cheers, > Günter > > -- > Dipl.-Inform. Günter Ladwig > > Karlsruhe Institute of Technology (KIT) > Institute AIFB > > Englerstraße 11 (Building 11.40, Room 250) > 76131 Karlsruhe, Germany > Phone: +49 721 608-47946 > Email: guenter.lad...@kit.edu > Web: www.aifb.kit.edu > > KIT – University of the State of Baden-Württemberg and National Large-scale > Research Center of the Helmholtz Association > >
