Re: emptying my cluster

2012-01-05 Thread aaron morton
> * In the design discussed it is perfectly reasonable for data not to be on > the archive node. > > You mean when having the 2 DC setup I mentioned and using TTL? In case I have > the 2 DC setup but don't use TTL I don't understand why data wouldn't be on > the archive node? Originally you we

Re: emptying my cluster

2012-01-05 Thread Alexandru Sicoe
Hi, On Wed, Jan 4, 2012 at 9:54 PM, aaron morton wrote: > Some thoughts on the plan: > > * You are monkeying around with things, do not be surprised when > surprising things happen. > I am just trying to explore different solutions for solving my problem. > * Deliberately unbalancing the clust

Re: emptying my cluster

2012-01-04 Thread aaron morton
Some thoughts on the plan: * You are monkeying around with things, do not be surprised when surprising things happen. * Deliberately unbalancing the cluster may lead to Bad Things happening. * In the design discussed it is perfectly reasonable for data not to be on the archive node. * Truncat

Re: emptying my cluster

2012-01-04 Thread Alexandru Sicoe
Hi, On Tue, Jan 3, 2012 at 8:19 PM, aaron morton wrote: > Running a time based rolling window of data can be done using the TTL. > Backing up the nodes for disaster recover can be done using snapshots. > Restoring any point in time will be tricky because to may restore columns > where the TTL h

Re: emptying my cluster

2012-01-03 Thread aaron morton
Running a time based rolling window of data can be done using the TTL. Backing up the nodes for disaster recover can be done using snapshots. Restoring any point in time will be tricky because to may restore columns where the TTL has expired. > Will I get a single copy of the data in the remot

Re: emptying my cluster

2012-01-03 Thread Alexandru Sicoe
Hi, I need to build a system that stores data for years, so yes, I am backing up data in another mass storage system from where it could be later accessed. The data that I successfully back up has to be deleted from my cluster to make space for new data coming in. I was aware about the snapshotti

Re: emptying my cluster

2012-01-03 Thread aaron morton
That sounds a little complicated. Do you want to get the data out for an off node backup or is it for processing in another system ? You may get by using: * TTL to expire data via compaction * snapshots for backups Cheers - Aaron Morton Freelance Developer @aaronmorton http:

emptying my cluster

2012-01-02 Thread Alexandru Sicoe
Hi everyone and Happy New Year! I need advice for organizing data flow outside of my 3 node Cassandra 0.8.6 cluster. I am configuring my keyspace to use the NetworkTopologyStrategy. I have 2 data centers each with a replication factor 1 (i.e. DC1:1; DC2:1) the configuration of the PropertyFileSnit