Programmable configuration in embedded cassandra

Hello, I understand that currently one must have the configuration file in place in order to start a cassandra node(even if it is embedded in the application, i.e. using only StorageProxy without CassandraServer). Is that correct? It would be practical and very easy to implement a "programmable" c

Hadoop over Cassandra

Hi, Can someone explain how this works? As long as I know, there is no execution engine in Cassandra alone, so I assume that Hadoop gives the MapReduce execution engine which uses Cassandra as the distributed storage? Is data locality preserved? How mature this "couple" is? How is the performance o

Run several cassandra instances on local machine

It seems to be impossible to run several cassandra instances on a localmachine, due to the fact that the seeds are described as ip addresses and not couples of ip address and port. Is this correct? (In case I want to start a cluster of several nodes on one machine for some testing) -- Jan Virin h

Go over super column data and delete the first X rows

Hi I want to use cassandra for storing some data which gets irrelevant with time. There will be a lot of data and I want to run a procedure which will delete the oldest from the repository from time to time. The column name which holds the data is a "timestamp" name, so I will want delete some rang

Monitoring tools for cassandra

Hi Can you please advise a good monitoring tool for cassandra? I am familiar with node-tool, and I heard about some web interface, can someone elaborate? Thanks, -- Jan Virin http://www.linkedin.com/in/yanvirin

Re: Go over super column data and delete the first X rows

I understand, I wanted to know how exactly should I do it manually... is there some "best" practice of going over all the "older" rows and deleting them? On Sun, May 23, 2010 at 5:25 PM, Jonathan Ellis wrote: > Answered on the user@ list. > > On Sun, May 23, 2010