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From Michael Kjellman <>
Subject Re: Creating namespace and column family from multiple nodes concurrently
Date Thu, 23 May 2013 00:54:37 GMT
You will most likely get better answers to your if you try the Cassandra
users group instead for your question.


On 5/22/13 5:52 PM, "Emalayan Vairavanathan" <> wrote:

>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 create the
>Option - 1 : Using a single node for schema creation.
>        Option - 2: Having all the nodes (> 100) to run the same schema
>creation logic (First, nodes will check whether the schema is already
>available and then try to create the schema if it is not available
>To keep the initialization phase simple, I prefer to go for Option - 2.
>However I am not sure how Cassandra is going to behave if multiple nodes
>try to create the same schema (namespace and column families)
>concurrently. It would be nice if someone can tell me about the
>implications of Option - 2 with Cassandra version 1.2.2.
>Please let me know if you have question.
>Thank you

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