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https://issues.apache.org/jira/browse/HDFS-3932?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13460672#comment-13460672
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Colin Patrick McCabe commented on HDFS-3932:
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bq. box w/ multiple addresses
Well, I tested it on a box that had 127.0.0.1 and another IP, and verified that
it got the non-localhost IP.
In general, however, we should implement HDFS-3946, which will make it
unnecessary to guess the IP in the way we're doing here. This is just a quick
fix in the mean time.
bq. box with totally broken networking that returns null instead of a
hostname/IP addr. One of mine with a buggy resolv.conf had this. Such a box is
beyond hope -the goal should just be to bail out with a message saying "your
network is broken", instead of a stack trace.
{{NetUtils#getConnectAddress}} has code for this case. I haven't tested it-- I
like to keep all my boxes from getting "beyond hope," and also, I doubt any
part of Hadoop will work in this scenario.
> NameNode Web UI broken if the rpc-address is set to the wildcard
> -------------------------------------------------------------------
>
> Key: HDFS-3932
> URL: https://issues.apache.org/jira/browse/HDFS-3932
> Project: Hadoop HDFS
> Issue Type: Bug
> Affects Versions: 1.0.3, 2.0.0-alpha
> Reporter: Eli Collins
> Assignee: Eli Collins
> Fix For: 2.0.3-alpha
>
> Attachments: HDFS-3932.001.patch, HDFS-3932.002.patch,
> HDFS-3932.003.patch, HDFS-3932.005.patch, HDFS-3932.006.patch,
> HDFS-3932.007.patch, HDFS-3932.008.patch
>
>
> If {{dfs.namenode.rpc-address}} is set to the wildcard some of links in the
> dfsnodelist.jsp and browseDirectory.jsp pages are broken because the nnaddr
> field is passed verbatim (eg nnaddr=0.0.0.0:8021).
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