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From "Konstantin Boudnik (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-9562) Create REST interface for HDFS health data
Date Tue, 21 May 2013 04:33:18 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-9562?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13662669#comment-13662669

Konstantin Boudnik commented on HADOOP-9562:

Trevor, for a patch to go trough automatic testing system it needs to be generated against

Also, a quick look at the patch shows that you have some irrelevant changes in it:
 - .../hadoop-common/src/main/docs/releasenotes.html seems to be included because it has some
CRLF issues in branch-2 as the result of autogeneration or something. 
 - the licenses _have_ to be ASL 2.0 and they have to present in all new files
 - class {{NodesInfo}} is empty. Is this expected?
Please address these issue in the second version. BTW, you can keep the same name of the patch
file and JIRA will automatically detect new version.
> 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: 2.0.4-alpha
>            Reporter: Trevor Lorimer
>            Priority: Minor
>         Attachments: 0001-HAD-162-Final-revision-refactor.patch
> 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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