global:set_lock/1 vs gen_leader & gen_paxos

[Joel Reymont]

Suppose I need a single node (process) in a cluster to write to a file  
on Amazon S3. I don't care which node does it since all I'm doing is  
writing a list of nodes to the file.

I could try to elect a leader with gen_leader or come to consensus  
with gen_paxos. What are the drawbacks of using global:set_lock/1  
instead, though?

	Thanks, Joel

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