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From Avery Ching <ach...@apache.org>
Subject Re: Global factory for vertex IDs?
Date Wed, 03 Jul 2013 18:49:27 GMT
What are the requirements of your global ids?  If they simply need to be 
unique, you can split the id space across workers and assign them 
incrementally.

On 6/30/13 1:09 AM, Christian Krause wrote:
> Hi,
>
> I was wondering if there is a way to register a global factory for new 
> vertex IDs. Currently, I have to come up with new IDs in my compute 
> method which does work, but with the penality that the required memory 
> for vertex IDs is unnecessarily high. If there was a global vertex ID 
> factory I could just keep a global counter and increase it by one when 
> I need a new ID. Is something like that possible, or does it conflict 
> with the BSP computation model? The thing is, in the end vertex ID 
> collisions are detected by Giraph, so why not allow also a global 
> vertex ID factory...
>
> Cheers,
> Christian


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