Re: cluster locks up from high MESSAGE-DESERIALIZER-POOL counts

2010-05-27 Thread Cagatay Kavukcuoglu
I think this is because as an optimization Cassandra sends a read request only to the closest replica and sends digest requests to other replicas for read repair. The same replica is probably getting chosen as the closest for all of your read requests. Maybe it would be a useful improvement to choo

Re: Trove maps

2010-05-04 Thread Cagatay Kavukcuoglu
Did removing Trove collections have a noticeable effect on performance or memory use at the time? On Tuesday, May 4, 2010, Avinash Lakshman wrote: > Hahaha, Jeff - I remember scampering to remove those references to the Trove > maps, I think around 2 years ago. > Avinash > > On Tue, May 4, 2010

Re: Does anybody work about transaction on cassandra ?

2010-04-26 Thread Cagatay Kavukcuoglu
Better fault tolerance? Scalability to large data volumes? A combination of ZooKeeper based transactions and Cassandra may have better characteristics than RDBMS on these criteria. There's no question that trade-offs are involved, but as far as these issues are concerned, you'd be starting from