[jira] [Created] (HDFS-7632) MiniDFSCluster configures DataNode data directories incorrectly if using more than 1 DataNode and more than 2 storage locations per DataNode.

[Chris Nauroth (JIRA)]

Chris Nauroth created HDFS-7632:
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             Summary: MiniDFSCluster configures DataNode data directories 
incorrectly if using more than 1 DataNode and more than 2 storage locations per 
DataNode.
                 Key: HDFS-7632
                 URL: https://issues.apache.org/jira/browse/HDFS-7632
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: test
            Reporter: Chris Nauroth
            Assignee: Chris Nauroth


{{MiniDFSCluster}} allows the caller to set the number of storage locations per 
DataNode.  If this number is set higher than 2, and if the cluster is 
configured with more than 1 DataNode, then the calculation of the storage 
directory paths will be incorrect.  Multiple DataNodes will attempt to use the 
same storage directory, and one of them will fail while trying to acquire the 
file lock.



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