Hello William From the doc: http://www.datastax.com/documentation/cassandra/1.2/cassandra/operations/ops_tuning_bloom_filters_c.html
After updating the value of bloom_filter_fp_chance on a table, Bloom filters need to be regenerated in one of these ways: - Initiate compaction<http://www.datastax.com/documentation/cassandra/1.2/cassandra/operations/ops_configure_compaction_t.html#task_ds_cwj_1jv_dk> - Upgrade SSTables<http://www.datastax.com/documentation/cassandra/1.2/cassandra/tools/toolsNodetool_r.html#reference_ds_f4n_y2j_gk__upgradesstables> Regards Duy Hai DOAN On Mon, Apr 14, 2014 at 3:44 PM, William Oberman <ober...@civicscience.com>wrote: > I had a thread on this forum about clearing junk from a CF. In my case, > it's ~90% of ~1 billion rows. > > One side effect I had hoped for was a reduction in the size of the bloom > filter. But, according to nodetool cfstats, it's still fairly large > (~1.5GB of RAM). > > Do bloom filters ever resize themselves when the CF suddenly gets smaller? > > > My next test will be restarting one of the instances, though I'll have to > wait on that operation so I thought I'd ask in the meantime. > > will >
