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https://issues.apache.org/jira/browse/HDFS-3232?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eli Collins reassigned HDFS-3232:
---------------------------------
Assignee: (was: Eli Collins)
> Cleanup DatanodeInfo vs DatanodeID handling in DN servlets
> ----------------------------------------------------------
>
> Key: HDFS-3232
> URL: https://issues.apache.org/jira/browse/HDFS-3232
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Eli Collins
> Priority: Minor
> Labels: newbie
>
> The DN servlets currently have code like the following:
> {code}
> final String hostname = host instanceof DatanodeInfo
> ? ((DatanodeInfo)host).getHostName() : host.getIpAddr();
> {code}
> I believe this outdated, that we now always get one or the other (at least
> when not running the tests). Need to verify that. We should clean this code
> up as well, eg always use the IP (which we'll lookup the FQDN for) since the
> hostname isn't necessarily valid to put in a URL (the DN hostname isn't
> necesarily a FQDN).
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