Hi- On Mon, Jun 3, 2013 at 10:36 AM, Robert Coli <rc...@eventbrite.com> wrote:
> On Mon, Jun 3, 2013 at 8:54 AM, Darren Smythe <darren1...@gmail.com> > wrote: > > Is "setting live ratio to minimum of 1.0 instead of X" supposed to be > rare? > > Because were getting it fairly consistently. > > Do you have working JNA? If so, my understanding is that message > should be relatively rare.. > We recently tried a 8 xlarge node cluster instead of just 4 xlarge instances, keeping the number of clients the same as before. But were still seeing a lot of "setting live ratio" and "flush up to the two largest memtables" messages alot. The compaction queues still seem congested also. Theere's also alot of dropped MUTATION messages --- 13,000,000 Completed in Mutation Stage, 100,000 Dropped THe inserts are now about 11k/second, up slightly from 10k/second with 4 nodes. Another missing piece may be that each column has a 1-2k blob as a value. The value is binary now, but were moving to json later. TIA --Darren > > ./src/java/org/apache/cassandra/db/Memtable.java > " > double newRatio = (double) deepSize / currentSize.get(); > > if (newRatio < MIN_SANE_LIVE_RATIO) > { > logger.warn("setting live ratio to minimum of > {} instead of {}", MIN_SANE_LIVE_RATIO, newRatio); > newRatio = MIN_SANE_LIVE_RATIO; > } > " > > =Rob >