Re: Best suitable value for flush_largest_memtables_at

2012-02-23 Thread Roshan
Thanks Aaron for the indormation. I increased the VM size to 2.4G from 1.4G. Please check my current CF in below. Keyspace: WCache: Replication Strategy: org.apache.cassandra.locator.SimpleStrategy Durable Writes: true Options: [replication_factor:3] Column Families: ColumnFamily: W

Re: Best suitable value for flush_largest_memtables_at

2012-02-23 Thread aaron morton
> flush_largest_memtables_at Is designed as a safety valve, reducing it may help prevent an oom but it wont get to the cause. Assuming you cannot just allocate more memory to the JVM, and you are running the default settings in cassandra-env.sh (other than the changes mentioned), and you are o

Best suitable value for flush_largest_memtables_at

2012-02-22 Thread Roshan Pradeep
Hi Experts Under massive write load what would be the best value for Cassandra * flush_largest_memtables_at* setting? Yesterday I got an OOM exception in one of our production Cassandra node under heavy write load within 5 minute duration. I change the above setting value to .45 and also change t