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HDFS >> mail # user >> Re: Topology script frequency

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答复: Topology script frequency
I'd submitted a patch(HADOOP-8928.txt) to reload topology config dynamically like "hdfs dfsadmin -refreshTopology" style several months before, see HADOOP-8928 for more details.

发件人: Chris Embree [[EMAIL PROTECTED]]
发送时间: 2013年2月21日 4:17
主题: Topology script frequency

I've checked all of the documentation, books and google searches I can think of....

I have a working topology script.  I have dynamic IP's.  I have an automated process to update the rack data when a datanode changes IP.

What I don't have is any clue as to when the NN reads this script.  If I execute it right now with it'll return /dc1/rack3  When I run hadoop balancer I see /default/rack/<>
I really don't want to have to restart the NN for IP changes to be noticed.

Any brilliant insights?