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From "Chris Nauroth (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-4269) DatanodeManager#registerDatanode rejects all datanode registrations from localhost in single-node developer setup
Date Mon, 10 Dec 2012 20:21:21 GMT

    [ https://issues.apache.org/jira/browse/HDFS-4269?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13528242#comment-13528242
] 

Chris Nauroth commented on HDFS-4269:
-------------------------------------

Jenkins gave -1 for no new tests, but this change is required to fix all MiniDFSCluster-based
tests on Windows.
                
> DatanodeManager#registerDatanode rejects all datanode registrations from localhost in
single-node developer setup
> -----------------------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-4269
>                 URL: https://issues.apache.org/jira/browse/HDFS-4269
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: namenode
>    Affects Versions: 3.0.0, trunk-win
>            Reporter: Chris Nauroth
>            Assignee: Chris Nauroth
>         Attachments: HDFS-4269.1.patch
>
>
> HDFS-3990 is a change that optimized some redundant DNS lookups.  As part of that change,
{{DatanodeManager#registerDatanode}} now rejects attempts to register a datanode for which
the name has not been resolved.  Unfortunately, this broke single-node developer setups on
Windows, because Windows does not resolve 127.0.0.1 to "localhost".

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