Thanks for your quick response. I indeed see that similar sized files are compacted. However, for four similar 1GB files, this is not what I see.
The documentation states: "These parameters set thresholds for the number of similar-sized SSTables that can accumulate before a minor compaction is triggered. With the default values, a minor compaction may begin any time after four SSTables are created on disk for a column family, and must begin before 32 SSTables accumulate." So a more general question: In which situation does Cassandra not start a minor compaction immediately (when there are four similar sized files), but waits (up to 32)? Thanks! -----Original Message----- From: Radim Kolar [mailto:h...@sendmail.cz] Sent: vrijdag 4 november 2011 16:48 To: user@cassandra.apache.org Subject: Re: Question about minor compaction Dne 4.11.2011 16:16, Rene Kochen napsal(a): > I'm using Cassandra 0.7.9. > > Ok, so in this version, Cassandra waits with compaction. But when (in my > original example) are the four 1GB files compacted? There are compacted when next file of similar size to 1 GB is created