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https://issues.apache.org/jira/browse/HDFS-5742?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13866011#comment-13866011
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Jing Zhao commented on HDFS-5742:
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+1 Patch looks good to me.
> DatanodeCluster (mini cluster of DNs) fails to start
> ----------------------------------------------------
>
> Key: HDFS-5742
> URL: https://issues.apache.org/jira/browse/HDFS-5742
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: test
> Affects Versions: 3.0.0
> Reporter: Arpit Agarwal
> Assignee: Arpit Agarwal
> Priority: Minor
> Attachments: HDFS-5742.01.patch
>
>
> DatanodeCluster fails to start with NPE in MiniDFSCluster.
> Looks like a simple bug in {{MiniDFSCluster#determineDfsBaseDir}} - missing
> check for null configuration.
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