Re: Creating namespace and column family from multiple nodes concurrently

2013-05-27 Thread Arthur Zubarev
applied. Good Luck! From: Emalayan Vairavanathan Sent: Friday, May 24, 2013 1:14 AM To: user@cassandra.apache.org ; Arthur Zubarev Subject: Re: Creating namespace and column family from multiple nodes concurrently I am sorry if I was not clear. I was using nodes to refer machines (or vice versa

Re: Creating namespace and column family from multiple nodes concurrently

2013-05-23 Thread Emalayan Vairavanathan
multiple nodes concurrently so where the multiple nodes are? I am just puzzled   From: Emalayan Vairavanathan Sent: Thursday, May 23, 2013 3:43 PM To: Arthur Zubarev ; user@cassandra.apache.org Subject: Re: Creating namespace and column family from multiple nodes concurrently   "Would each d

Re: Creating namespace and column family from multiple nodes concurrently

2013-05-23 Thread Arthur Zubarev
so where the multiple nodes are? I am just puzzled From: Emalayan Vairavanathan Sent: Thursday, May 23, 2013 3:43 PM To: Arthur Zubarev ; user@cassandra.apache.org Subject: Re: Creating namespace and column family from multiple nodes concurrently "Would each device/machine have it

Re: Creating namespace and column family from multiple nodes concurrently

2013-05-23 Thread Robert Coli
On Thu, May 23, 2013 at 12:07 PM, Emalayan Vairavanathan wrote: > Do you have any idea how Cassandra is going to handle concurrent namespace > and column family creation (Here all the instances are going to create the > same namespace and column families concurrently)? > [...] > However I am not s

Re: Creating namespace and column family from multiple nodes concurrently

2013-05-23 Thread Emalayan Vairavanathan
han ; user@cassandra.apache.org Sent: Thursday, 23 May 2013 12:20 PM Subject: Re: Creating namespace and column family from multiple nodes concurrently Would each device/machine have its own keyspace?   Basically, your client needs to take care of a successful creation of the schema and

Re: Creating namespace and column family from multiple nodes concurrently

2013-05-23 Thread Arthur Zubarev
Subject: Re: Creating namespace and column family from multiple nodes concurrently Hi Arthur and Farraz, Thank you for getting back to me. I am trying to avoid sync among concurrent instances and this is why I am preferring Option - 2. Further in my application, I have reasonable window

Re: Creating namespace and column family from multiple nodes concurrently

2013-05-23 Thread Emalayan Vairavanathan
some other issues e.g: memory/ cpu /network bottlenecks ?   Thank you Emalayan From: Arthur Zubarev To: user@cassandra.apache.org; svemala...@yahoo.com Sent: Wednesday, 22 May 2013 8:07 PM Subject: Re: Creating namespace and column family from multiple nodes

Re: Creating namespace and column family from multiple nodes concurrently

2013-05-22 Thread Arthur Zubarev
I am assuming here you want to sync all the 100s of nodes once the application is airborne. I suspect this would flood the network and even potentially affect the machine itself memory-wise. How are you going to maintain the nodes (compaction+repair)? Regards, Arthur -Original

Re: Creating namespace and column family from multiple nodes concurrently

2013-05-22 Thread Faraaz Sareshwala
Others on this list may know better, but it might not be good to have all your clients create a schema on initialization. They can all use it once it has been created, but creating it should be done by a single entity. One of the issues that can come up if you make changes to schemas at the same ti