Alain, Thanks for replying.
I am using C* 2.2.4. Yes the table is RF=3. I changed bloom_filter_fp_chance from 0.01 to 0.1 a couple of months ago. On Tue, May 17, 2016 at 11:05 AM, Alain RODRIGUEZ <arodr...@gmail.com> wrote: > Hi, we would need more information here (if you did not solve it yet). > > What is your Cassandra version? > Does this 3 node cluster use a Replication Factor of 3? > Did you change the bloom_filter_fp_chance recently? > > That table has about 16M keys and 140GB of data. >> > > Is that the total value or per node? In any case, we need the data size > for the 3 nodes to understand. > > It might have been a temporary situation, but in this case you would know > by now. > > C*heers, > > > 2016-05-03 18:47 GMT+02:00 Kai Wang <dep...@gmail.com>: > >> Hi, >> >> I have a table on 3-node cluster. I notice bloom filter memory usage are >> very different on one of the node. For a given table, I checked >> CassandraMetricsRegistry$JmxGauge.[table]_BloomFilterOffHeapMemoryUsed.Value. >> 2 of 3 nodes show 1.5GB while the other shows 2.5 GB. >> >> What could be the reason? >> >> That table is using LCS. >> bloom_filter_fp_chance=0.1 >> That table has about 16M keys and 140GB of data. >> >> Thanks. >> > >
