Andras Bokor created HDFS-10425:
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             Summary: Clean up NNStorage and TestSaveNamespace
                 Key: HDFS-10425
                 URL: https://issues.apache.org/jira/browse/HDFS-10425
             Project: Hadoop HDFS
          Issue Type: Sub-task
    Affects Versions: 0.23.0
            Reporter: Andras Bokor
            Assignee: Andras Bokor


This JIRA tracks a TODO in TestSaveNamespace. Currently, if, while writing the 
VERSION files in the storage directories, one of the directories fails, the 
entire operation throws IOE. This is unnecessary -- instead, just that 
directory should be marked as failed.

This is targeted to be fixed _after_ HDFS-1073 is merged to trunk, since it 
does not ever dataloss, and would rarely occur in practice (the dir would have 
to fail between writing the fsimage file and writing VERSION)



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