Re: Bloom filter memory usage disparity

2016-05-17 Thread Jeff Jirsa
To: "user@cassandra.apache.org" Subject: Re: Bloom filter memory usage disparity 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 wrote: Hi

Re: Bloom filter memory usage disparity

2016-05-17 Thread Kai Wang
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 wrote: > Hi, we would need more information here (if you did not solve it yet). > > What is your

Re: Bloom filter memory usage disparity

2016-05-17 Thread Alain RODRIGUEZ
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 nod

Bloom filter memory usage disparity

2016-05-03 Thread Kai Wang
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