It's a compaction strategy option, so it's cluster-wide for that strategy. On Sat, Sep 22, 2012 at 5:46 AM, Radim Kolar <h...@filez.com> wrote: > I am interested in experiments with size tiered compaction, because i get > sstables which are never compacted because no other sstable is close to > their size, i have plans to experiment with bucket ratio which is currently > 50-150 percent to make it 33-200 percent. > > Its all about changing constants at lines 170-171 > > https://github.com/apache/cassandra/blob/trunk/src/java/org/apache/cassandra/db/compaction/SizeTieredCompactionStrategy.java > > if ((size > (oldAverageSize / 2) && size < (3 * oldAverageSize) / 2) > > || (size < minSSTableSize && oldAverageSize < minSSTableSize)) > > to make these constant configurable, i suppose something similar to > "min_sstable_size" is needed. Its min_sstable_size configurable by CF or its > node wide setup?
-- Jonathan Ellis Project Chair, Apache Cassandra co-founder of DataStax, the source for professional Cassandra support http://www.datastax.com
