giraph-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Christian Krause>
Subject Re: Global factory for vertex IDs?
Date Thu, 04 Jul 2013 06:18:06 GMT
Yes, that would be perfectly fine. How can I do this? Specifically, how do
I get the ID of the worker? And can I then just use a counter field in my
computation which I increase whenever I need a new ID?

(So my global ID would be a pair of the worker ID and the number I derived
from incrementing the counter).


2013/7/3 Avery Ching <>

> 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

View raw message