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From "Eli Collins (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-3932) NameNode Web UI broken if the rpc-address is set to the wildcard
Date Wed, 19 Sep 2012 18:36:09 GMT

    [ https://issues.apache.org/jira/browse/HDFS-3932?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13458938#comment-13458938
] 

Eli Collins commented on HDFS-3932:
-----------------------------------

- determineHttpAddress would be better named something like getNameNodeRpcAddressForHttpServer
since we're getting the NN RPC address not the HTTP address (which is a different port)
- Did you consider resolving the hostname to an IP rather than passing the hostname verbatim,
eg use getHostAddress instead of getHostName or resolve the hostname returned here if getHostAddress
is not equivalent?  If we pass the hostname do we need to URL encode it?
- In the javadoc would replace of "the name.node.address to use" with something more descriptive,
eg 
{noformat}
Determine the NameNode RPC address to pass in the name.node.address Http server attribute
for use by the Web UI and servlets. If the NameNode has bound the RPC server to the
wildcard then we use the hostname (which we assume has an active RPC server).
{noformat}
- The test should also check for the loopback IP for sanity  
- Test the broken web UI links and hftp (eg using distcp) on a pseudo cluster that binds the
rpc addr to the wildcard?
 
                
> 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
>         Attachments: HDFS-3932.001.patch, HDFS-3932.002.patch, HDFS-3932.003.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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