Re: Tombstone lifespan after multiple deletions

2011-01-19 Thread Germán Kondolf
On Wed, Jan 19, 2011 at 12:59 AM, Zhu Han schumi@gmail.com wrote: On Wed, Jan 19, 2011 at 11:35 AM, Germán Kondolf german.kond...@gmail.com wrote: Yes, that's what I meant, but correct me if I'm wrong, when a deletion comes after another deletion for the same row or column will the gc

Re: Tombstone lifespan after multiple deletions

2011-01-19 Thread Germán Kondolf
On Wed, Jan 19, 2011 at 11:52 AM, Jonathan Ellis jbel...@gmail.com wrote: On Wed, Jan 19, 2011 at 6:41 AM, Germán Kondolf german.kond...@gmail.com wrote: As the original example depicted clearly: day 1 - insert Row1.Col1 day 2 - delete Row1.Col1 day 11 (before gc-grace-seconds) - delete Row1

Re: Tombstone lifespan after multiple deletions

2011-01-18 Thread Germán Kondolf
Maybe it could be taken into account when the compaction is executed, if I only have a consecutive list of uninterrupted tombstones it could only care about the first. It sounds like the-way-it-should-be, maybe as a part of the row-reduce process. Is it feasible? Looking into the CASSANDRA-1074

Re: Tombstone lifespan after multiple deletions

2011-01-18 Thread Germán Kondolf
timestamp against the gc-grace-seconds when is reducing compacting. // Germán Kondolf http://twitter.com/germanklf http://code.google.com/p/seide/ // @i4 On 19/01/2011, at 00:16, Jonathan Ellis jbel...@gmail.com wrote: If you mean that multiple tombstones for the same row or column should be merged

Re: WELCOME to user@cassandra.apache.org

2010-12-29 Thread Germán Kondolf
Hmm... what about just paying for it? It cost less than $20 on Amazon for the Kindle version... (http://www.amazon.com/Cassandra-Definitive-Guide-Eben-Hewitt/dp/1449390412). // Germán Kondolf http://twitter.com/germanklf http://code.google.com/p/seide/ // @iPad On 30/12/2010, at 01:26, asil

Re: Too many open files Exception + java.lang.ArithmeticException: / by zero

2010-12-16 Thread Germán Kondolf
Be careful with the unlimited value on ulimit, you could end up with a unresponsive server... I mean, you could not even connect via ssh if you don't have enough handles. On Thu, Dec 16, 2010 at 9:59 AM, Amin Sakka, Novapost amin.sa...@novapost.fr wrote: I increased the amount of the allowed

Re: Too many open files Exception + java.lang.ArithmeticException: / by zero

2010-12-16 Thread Germán Kondolf
Indeed Hector has a connection pool behind it, I think it uses 50 connectios per node. But also uses a node to discover the others, I assume that, as I saw connections from my app to nodes that I didn't configure in Hector. So, you may check the fds in OS level to see if there is a bottleneck

Re: hazelcast

2010-12-10 Thread Germán Kondolf
Hi, I'm using it as a complement of cassandra, to avoid duplicate searches and duplicate content in a given moment in time. It works really nice by now, no critical issues, at least the functionallity I'm using from it. -- //GK german.kond...@gmail.com // sites http://twitter.com/germanklf

Re: hazelcast

2010-12-10 Thread Germán Kondolf
I don't know much about Zookeeper, but as far as I read, it is out of JVM process. Hazelcast is just a framework and you can programmatically start and shutdown the cluster, it's just an xml to configure it. Hazelcast also provides good caching features to integrate with Hibernate, distributed