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https://issues.apache.org/jira/browse/HADOOP-4029?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12652629#action_12652629
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Konstantin Shvachko commented on HADOOP-4029:
---------------------------------------------

# Storage.removedStorageDirs should be a member of FSImage rather than Storage 
class.
# In FSImage.java redundant import of StorageDirectory.
# Remove comments with test printouts from FSImage.processIOError();
# Replace tabs with spaces in FSImage.processIOError();
# In dfshealth.jsp
#- Instead of "FSImage Storage Configuration:" I'd rather say "NameNode 
Storage:"
#- Column "Dir" should rather be named "Storage Directory".

> NameNode should report status and performance for each replica of image and 
> log
> -------------------------------------------------------------------------------
>
>                 Key: HADOOP-4029
>                 URL: https://issues.apache.org/jira/browse/HADOOP-4029
>             Project: Hadoop Core
>          Issue Type: New Feature
>          Components: dfs
>    Affects Versions: 0.20.0
>            Reporter: Robert Chansler
>            Assignee: Boris Shkolnik
>         Attachments: HADOOP-4029.patch
>
>
> The administrator should have immediate access to the status of each replica. 
> In addition to reporting whether the replica is active or not, measured 
> performance should be reported so as to indicate whether a replica might 
> impact cluster performance or might be in danger of failing.
> We're probably not close to doing automated replica fail over, but we can 
> give the administrator some clues.

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