Hmmmm, my upgrade completed and then I added node back in and ran my repair. What is weird is that my nreldata column family still shows 156Meg of memory still(down from 2 gig though!!) in use and a false positive ratio of .99576 when I have the filter completely disabled(ie. Set to 1.0). I see the *Filter.db files on disk(and size approximately matches the in-memory size). I tried restarting the node as well.
1. Can I stop the node, delete the *Filter.db files and restart the node(is this safe)??? 2. Why do I have 5 gig being eaten up by cassandra? "nodetool info" memory 5.2Gig, key cache:11 meg and row cache 0 bytes. All bloomfilters are also small <1meg. Exception to #2 is I have nreldata still using 156MB for some reason but still no where close to 5.2 gig that nodetool shows in use. Thanks, Dean Bloom Filter Space Used: 2318392048<tel:2318392048> Just to be sane do a quick check of the -Filter.db files on disk for this CF. If they are very small try a restart on the node. Number of Keys (estimate): 1249133696 Hey a billion rows on a node, what an age we live in :) Cheers ----------------- Aaron Morton Freelance Cassandra Developer New Zealand @aaronmorton http://www.thelastpickle.com<http://www.thelastpickle.com/> On 23/02/2013, at 4:35 AM, "Hiller, Dean" <dean.hil...@nrel.gov<mailto:dean.hil...@nrel.gov><mailto:dean.hil...@nrel.gov<mailto:dean.hil...@nrel.gov>>> wrote: So in the cli, I ran update column family nreldata with bloom_filter_fp_chance=1.0; Then I ran nodetool upgradesstables databus5 nreldata; But my bloom filter size is still around 2gig(and I want to free up this heap)!!!! According to nodetool cfstats command… Column Family: nreldata SSTable count: 10 Space used (live): 96841497731 Space used (total): 96841497731 Number of Keys (estimate): 1249133696 Memtable Columns Count: 7066 Memtable Data Size: 4286174 Memtable Switch Count: 924 Read Count: 19087150 Read Latency: 0.595 ms. Write Count: 21281994 Write Latency: 0.013 ms. Pending Tasks: 0 Bloom Filter False Postives: 974393 Bloom Filter False Ratio: 0.99998 Bloom Filter Space Used: 2318392048 Compacted row minimum size: 73 Compacted row maximum size: 446 Compacted row mean size: 143
