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https://issues.apache.org/jira/browse/HDFS-6213?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13977631#comment-13977631
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Haohui Mai commented on HDFS-6213:
----------------------------------

{code}
+    conf.set(DFSConfigKeys.DFS_DATANODE_ADDRESS_KEY, "0.0.0.0:0");
{code}

Can you use {{localhost:0}} instead of {{0.0.0.0:0}}? On windows it is possible 
to trigger UAC when listening on all interfaces.

> TestDataNodeConfig failing on Jenkins runs due to DN web port in use
> --------------------------------------------------------------------
>
>                 Key: HDFS-6213
>                 URL: https://issues.apache.org/jira/browse/HDFS-6213
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: test
>    Affects Versions: 3.0.0
>            Reporter: Steve Loughran
>            Assignee: Andrew Wang
>            Priority: Minor
>         Attachments: hdfs-6213-1.patch
>
>
> The {{TestDataNodeConfig}} test fails on some runs from the port 50075 being 
> in use -the DN the test is creating is picking up the default web port, and 
> if is in use (previous test?) the test fails.



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