Re: Questions around the heap

2012-11-12 Thread Alain RODRIGUEZ
@cassandra.apache.org user@cassandra.apache.orgmailto:user@cassandra.apache.org Date: Wednesday, November 7, 2012 9:45 AM To: user@cassandra.apache.orgmailto:user@cassandra.apache.org user@cassandra.apache.orgmailto:user@cassandra.apache.org Subject: Re: Questions around the heap s application that heavily

Re: Questions around the heap

2012-11-12 Thread aaron morton
@cassandra.apache.orgmailto:user@cassandra.apache.org user@cassandra.apache.orgmailto:user@cassandra.apache.org Date: Wednesday, November 7, 2012 9:45 AM To: user@cassandra.apache.orgmailto:user@cassandra.apache.org user@cassandra.apache.orgmailto:user@cassandra.apache.org Subject: Re: Questions around the heap

Re: Questions around the heap

2012-11-07 Thread Bryan
What are your bloom filter settings on your CFs? Maybe look here: http://www.datastax.com/docs/1.1/operations/tuning#tuning-bloomfilters On Nov 7, 2012, at 4:56 AM, Alain RODRIGUEZ wrote: Hi, We just had some issue in production that we finally solve upgrading hardware and increasing

Re: Questions around the heap

2012-11-07 Thread Alain RODRIGUEZ
I have to say that I have no idea on how to tune them. I discover the existence of bloom filters a few month ago and even after reading http://wiki.apache.org/cassandra/ArchitectureOverview#line-132 and http://spyced.blogspot.com/2009/01/all-you-ever-wanted-to-know-about.html I am not sure what

Re: Questions around the heap

2012-11-07 Thread Hiller, Dean
@cassandra.apache.orgmailto:user@cassandra.apache.org user@cassandra.apache.orgmailto:user@cassandra.apache.org Subject: Re: Questions around the heap s application that heavily scans a particular column family, you would want to inhibit or disable the Bloom filter on the column family by setting it high