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https://issues.apache.org/jira/browse/HADOOP-9562?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13658168#comment-13658168
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Suresh Srinivas commented on HADOOP-9562:
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{quote}
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.
{quote}
This is not correct. While doing standardized REST APIs may not be a bad idea,
all of this information is exposed through {{FSNamesystemMBean}} and
{{NameNodeMXBean}} and the corresponding JMX http bridge (see HADOOP-7144 and
related jiras). This is what currently Ambari project uses.
> Create REST interface for HDFS health data
> ------------------------------------------
>
> Key: HADOOP-9562
> URL: https://issues.apache.org/jira/browse/HADOOP-9562
> Project: Hadoop Common
> Issue Type: New Feature
> Components: fs
> Affects Versions: 2.0.4-alpha
> Reporter: Trevor Lorimer
> Priority: Minor
>
> 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 all the 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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