Tests for NameNode -checkpoint option with different configurations 
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                 Key: HADOOP-4728
                 URL: https://issues.apache.org/jira/browse/HADOOP-4728
             Project: Hadoop Core
          Issue Type: Test
            Reporter: Boris Shkolnik
            Priority: Minor


here are the tests:

id               :   secnn-4
Desc         :   Start SecondaryNameNode first before starting NameNode         
 
Expected 
results      :    Secondary namenode should fail to start

---------------------------------
id               :  secnn-6
Desc         :  Configure NameNode with dfs.name.dir and dfs.name.edits.dir 
pointing to different directories. Make sure the directories are empty.
                     Use default configuration for fs.checkpoint.dir and 
fs.checkpoint.edits.dir pointing to same directory.
                     Start NameNode using -importCheckpoint.
Expected
results      :  Name-node should import image and edits into different 
directories. 

---------------------------------
id               :  secnn-7     
Desc         :  Start NameNode.
                      Configure SecondaryNameNode with fs.checkpoint.dir and 
fs.checkpoint.edits.dir pointing to different directories.
                      Start SecondaryNameNode.  
Expected
results       :  Secondary name-node should download edits and create the image 
in different directories. 
----------------------------

id                :  secnn-8
Desc          : Configure NameNode with dfs.name.dir and dfs.name.edits.dir 
pointing to different directories. Make sure the directories are empty.
                      Configure fs.checkpoint.dir and fs.checkpoint.edits.dir 
pointing to different (same as in secnn-7) directories.
                      Start NameNode using -importCheckpoint.   
Expected
Results      : Name-node should import image and edits into different 
directories. 

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