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https://issues.apache.org/jira/browse/HDFS-3853?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Arun C Murthy closed HDFS-3853.
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> Port MiniDFSCluster enableManagedDfsDirsRedundancy option to branch-2
> ---------------------------------------------------------------------
>
>                 Key: HDFS-3853
>                 URL: https://issues.apache.org/jira/browse/HDFS-3853
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: name-node
>    Affects Versions: 2.0.2-alpha
>            Reporter: Colin Patrick McCabe
>            Assignee: Colin Patrick McCabe
>            Priority: Minor
>             Fix For: 0.23.2, 2.0.2-alpha
>
>         Attachments: HDFS-3049-b2.002.patch
>
>
> MiniDFSCluster's enabledManagedDfsDirsRedunancy flag should be ported to 
> branch-2.  Certain tests rely on it to get full coverage-- for example,  
> {{TestNameNodeRecovery}} and {{TestFSEditLogLoader}}.
> Just to give an example, if we're using redundant edit log directories, a 
> test like this may succeed for the wrong reasons:
> 1. screw up edit log directory
> 2. run recovery
> 3. test that we can start NN
> With redundant edit log directories and edit log failover, step 1 is a no-op 
> because we can just fail over to the other directory.  So we're not really 
> testing what we need to test.  This was supposed to be ported over to 
> branch-2 from trunk with the other stuff from HDFS-3049, but was not.

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