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From "Suresh Srinivas (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-9562) Create REST interface for HDFS health data
Date Thu, 16 May 2013 09:19:15 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-9562?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13659374#comment-13659374
] 

Suresh Srinivas commented on HADOOP-9562:
-----------------------------------------

[~steve_l@iseran.com] Unless I am missing something, all the information on dfshealth is available
as jmx bean and also over http. The main reason this was done was to avoid having to scrape
the webpage.
                
> 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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