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https://issues.apache.org/jira/browse/HADOOP-9562?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13706396#comment-13706396
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Konstantin Shvachko commented on HADOOP-9562:
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Trevor, few suggestions:
# you should be able to eliminate FSNamesystemHelper from your patch by using
{{nameNode.getRpcServer().listCorruptFileBlocks("/", null)}}
# similarly you should be able to eliminate NameNodeHelper by using
{{nameNode.getRpcServer().getServiceStatus().getState()}}
It's a bit unintuitive, but should work.
# Typo in {{FSWebServices}}. I guess {{nodeName}} is meant to be {{nameNode}}.
# In JAXBContextResolver could you please replace raw {{Class}} with
{{Class<?>}}.
Looks good otherwise.
> Create REST interface for HDFS health data
> ------------------------------------------
>
> Key: HADOOP-9562
> URL: https://issues.apache.org/jira/browse/HADOOP-9562
> Project: Hadoop Common
> Issue Type: Improvement
> Components: fs
> Affects Versions: 3.0.0, 2.0.4-alpha
> Reporter: Trevor Lorimer
> Priority: Minor
> Attachments: HADOOP-9562.diff
>
>
> The HDFS health screen (dfshealth.jsp) displays basic Version, Security and
> Health information concerning the NameNode, currently this information is
> accessible from classes in the org.apache.hadoop,hdfs.server.namenode package
> and cannot be accessed outside the NameNode. This becomes prevalent if the
> data is required to be displayed using a new user interface.
> The proposal is to create a REST interface to expose the NameNode information
> displayed on dfshealth.jsp using GET methods. Wrapper classes will be created
> to serve the data to the REST root resource within the hadoop-hdfs project.
> This will enable the HDFS health screen information to be accessed remotely.
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