How often UnicastHostsProvider.buildDynamicNodes get called?

Hi

This question is related with my previous one regarding Zen discovery
settings in EC2 and escaping Java API.

I am not using AWS EC2 discovery because it didn't work in our company's
EC2 environment. We are using a kind of database for storing the list of
servers. So, I tweaked a
little AwsEc2UnicastHostsProvider.buildDynamicNodes() to query our database
instead of EC2 API.

My question is, how often does this method get called? Is it called
every discovery.zen.fd.ping_interval?

Thank you
Best, Jae

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