RE: Re: Cassandra access control

2009-11-25 Thread Coe, Robin
If all you want to perform is a simple bind to an LDAP service, then why use either? JPam uses JAAS under the covers and jldap is a full API for managing a depot. Neither solution looks particularly optimized. If ldap integration is a must-have, then why not just use JNDI? Create a

Re: urgent: missing data!

2009-11-25 Thread kevin
thanks jbellis for the fix https://issues.apache.org/jira/browse/CASSANDRA-583 On Tue, Nov 24, 2009 at 6:24 PM, kevin kevincastigli...@gmail.com wrote: On Tue, Nov 24, 2009 at 6:05 PM, kevin kevincastigli...@gmail.com wrote: hi guys i have been using cassandra this version Path: . URL:

Suppose I used RackAware and then lost a rack. Then what?

2009-11-25 Thread Freeman, Tim
I suppose the point behind RackAware is that you can lose one rack or datacenter and then recover somehow. How would the recovery work? I'd probably have part of my cluster left, the replication factor would be three, and I'd have less than a quorum for some of the rows. I'd have to add a

RE: java.util.concurrent.TimeoutException: Operation timed out - received only 0 responses from .

2009-11-25 Thread Freeman, Tim
I use RpcTimeoutInMillis3/RpcTimeoutInMillis in storage-conf.xml, and for the most part that makes the timeouts go away. My application would rather wait 30 seconds if needed, since it would otherwise retry. YMMV. I hear that Cassandra 0.5 will be better at avoiding the timeouts.

Re: Cassandra users survey

2009-11-25 Thread time
2) a practical/situational view of managing a cassandra cluster ... it would be nice to have a more comprehensive deployment guide. You're right. Maybe we can get Digg to share theirs. :) We don't have any such thing. The deployment at Digg is just as alpha as the deployment anywhere

Measuring load in Cassandra

2009-11-25 Thread Ramzi Rabah
Hi all We are trying to measure the load on cassandra nodes in production. Looking at the jconsole interface, we see a few attributes like: ReadCount, WriteCount, ReadLatency, WriteLatency. From what I have observed of these numbers, ReadCount might be 15 one second but 14 the next one, so I

Re: Cassandra users survey

2009-11-25 Thread matthew hawthorne
On Wed, Nov 25, 2009 at 6:38 PM, time t...@digg.com wrote: If I query a key range M..N, what nodes would likely answer? I also would enjoy this feature. For my evaluation I was attempting to verify that data was being replicated to the proper nodes. I was able to do this superficially by

Re: cassandra over hbase

2009-11-25 Thread Adam Fisk
Thanks for all the helpful responses, everyone. I've honestly been going back and forth a lot with this decision, but it's surprising how much of a difference the usability of Cassandra from an install and interface perspective really makes, even for techies like us. The HBase command line throws