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From "Mostafa Elhemali (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-4320) NameNode tries to get its address by looking at fs.default.name instead of its own config keys
Date Tue, 18 Dec 2012 00:50:12 GMT

     [ https://issues.apache.org/jira/browse/HDFS-4320?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Mostafa Elhemali updated HDFS-4320:

    Attachment: HDFS-4320.trunk.2.patch

OK I just realized the error of my ways: the original patch I uploaded was incorrect, since
it was trying to overload the dfs.namenode.servicerpc-address configuration which is just
meant for providing a second endpoint for services as opposed to clients of NameNode.

I have a second proposed fix for this problem: a new configuration key dfs.namenode.address
that specifies the namenode's address if present. If it's absent, we fallback on today's fs.default.name
logic. Would that work?
> NameNode tries to get its address by looking at fs.default.name instead of its own config
> ----------------------------------------------------------------------------------------------
>                 Key: HDFS-4320
>                 URL: https://issues.apache.org/jira/browse/HDFS-4320
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 1.1.0
>            Reporter: Mostafa Elhemali
>         Attachments: HDFS-4320.patch, HDFS-4320.trunk.2.patch, HDFS-4320.trunk.patch
> When NameNode starts up, it tries to find out its address by looking at the fs.default.name
configuration key instead of using its own keys (namely dfs.namenode.servicerpc-address).
This breaks scenarios where we try to configure a Hadoop cluster that uses a different default
file system than DFS, but still try to prop up namenode and datanode services as a secondary
file system.

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