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
-Original Message- From: Emalayan Vairavanathan To: user Sent: Wed, May 22, 2013 8:31 pm Subject: Creating namespace and column family from multiple nodes concurrently Hi all, I am implementing a distributed application which runs on 100s of machines concurrently. This application is going to

Re: Creating namespace and column family from multiple nodes concurrently

2013-05-22 Thread Arthur Zubarev
-Original Message- From: Emalayan Vairavanathan To: user Sent: Wed, May 22, 2013 8:31 pm Subject: Creating namespace and column family from multiple nodes concurrently Hi all, I am implementing a distributed application which runs on 100s of machines concurrently. This application is going to

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

Creating namespace and column family from multiple nodes concurrently

2013-05-22 Thread Emalayan Vairavanathan
Hi all, I am implementing a distributed application which runs on 100s of machines concurrently. This application is going to use Cassandra as underlaying storage. The application creates the schema (name space and column families) during initialization phase.  It seems I have two options to cr