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https://issues.apache.org/jira/browse/HDFS-8209?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14532507#comment-14532507
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surendra singh lilhore commented on HDFS-8209:
----------------------------------------------

Failed test case and checkstyle is not related to this patch.

> Support different number of datanode directories in MiniDFSCluster.
> -------------------------------------------------------------------
>
>                 Key: HDFS-8209
>                 URL: https://issues.apache.org/jira/browse/HDFS-8209
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: test
>    Affects Versions: 2.6.0
>            Reporter: surendra singh lilhore
>            Assignee: surendra singh lilhore
>            Priority: Minor
>              Labels: BB2015-05-TBR
>         Attachments: HDFS-8209.patch, HDFS-8209_1.patch
>
>
> I want to create MiniDFSCluster with 2 datanode and for each datanode I want 
> to set different number of StorageTypes, but in this case I am getting 
> ArrayIndexOutOfBoundsException.
> My cluster schema is like this.
> {code}
> final MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf)
>                               .numDataNodes(2)
>                               .storageTypes(new StorageType[][] {{ 
> StorageType.DISK, StorageType.ARCHIVE },{ StorageType.DISK } })
>                               .build();
> {code}
> *Exception* :
> {code}
> java.lang.ArrayIndexOutOfBoundsException: 1
>       at 
> org.apache.hadoop.hdfs.MiniDFSCluster.makeDataNodeDirs(MiniDFSCluster.java:1218)
>       at 
> org.apache.hadoop.hdfs.MiniDFSCluster.startDataNodes(MiniDFSCluster.java:1402)
>       at 
> org.apache.hadoop.hdfs.MiniDFSCluster.initMiniDFSCluster(MiniDFSCluster.java:832)
> {code}



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