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From "Colin Patrick McCabe (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-3932) NameNode Web UI broken if the rpc-address is set to the wildcard
Date Fri, 21 Sep 2012 18:23:07 GMT

    [ https://issues.apache.org/jira/browse/HDFS-3932?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13460672#comment-13460672

Colin Patrick McCabe commented on HDFS-3932:

bq. box w/ multiple addresses

Well, I tested it on a box that had 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=

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