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https://issues.apache.org/jira/browse/HADOOP-2474?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12589201#action_12589201
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Steve Loughran commented on HADOOP-2474:
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httpclient can do this in JVM, no need for any extra dependencies; works
anywhere that proxies are not in the way.
Be aware that dyndns dont like aggressive clients; you should get the current
value before attempting to change it only if different..
> Automate EC2 DynDNS setup
> -------------------------
>
> Key: HADOOP-2474
> URL: https://issues.apache.org/jira/browse/HADOOP-2474
> Project: Hadoop Core
> Issue Type: Improvement
> Components: contrib/ec2
> Reporter: Tom White
>
> Use the DynDNS webservice
> (https://www.dyndns.com/developers/specs/syntax.html) to automatically set up
> DNS for the EC2 cluster master node. If no DynDNS credentials are set (in
> hadoop-ec2-env.sh) then prompt the user to set up DNS manually (the existing
> behaviour).
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