THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!

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mvn test -Dtest=ClassName#methodName

A test fails with a NullPointerException in MiniDFSCluster

If any test fails with the error below it means you have an inappoprate umask setting. It should be set to 0022.

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java.lang.NullPointerException: null
    at org.apache.hadoop.hdfs.MiniDFSCluster.startDataNodes(MiniDFSCluster.java:426)
    at org.apache.hadoop.hdfs.MiniDFSCluster.<init>(MiniDFSCluster.java:284)
    at org.apache.hadoop.hdfs.MiniDFSCluster.<init>(MiniDFSCluster.java:124)

How do I run all of the unit tests?

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