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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-7144) Expose JMX with something like JMXProxyServlet
Date Fri, 03 Jun 2011 23:54:47 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-7144?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13044140#comment-13044140
] 

Hudson commented on HADOOP-7144:
--------------------------------

Integrated in Hadoop-Common-trunk-Commit #639 (See [https://builds.apache.org/hudson/job/Hadoop-Common-trunk-Commit/639/])
    HADOOP-7144. Expose JMX metrics via JSON servlet.
Contributed by Robert Joseph Evans

cdouglas : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1131289
Files : 
* /hadoop/common/trunk/src/java/org/apache/hadoop/http/HttpServer.java
* /hadoop/common/trunk/CHANGES.txt
* /hadoop/common/trunk/src/java/org/apache/hadoop/jmx
* /hadoop/common/trunk/src/test/core/org/apache/hadoop/jmx/TestJMXJsonServlet.java
* /hadoop/common/trunk/src/java/org/apache/hadoop/jmx/JMXJsonServlet.java
* /hadoop/common/trunk/src/java/org/apache/hadoop/jmx/package-info.java
* /hadoop/common/trunk/src/test/core/org/apache/hadoop/jmx


> Expose JMX with something like JMXProxyServlet 
> -----------------------------------------------
>
>                 Key: HADOOP-7144
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7144
>             Project: Hadoop Common
>          Issue Type: New Feature
>            Reporter: Luke Lu
>            Assignee: Robert Joseph Evans
>              Labels: jmx
>             Fix For: 0.20.205.0, 0.23.0
>
>         Attachments: HADOOP-7411-0.20.20X-V1.patch, HADOOP-7411-0.20.20X-V2.patch, HADOOP-7411-trunk-V1.patch,
HADOOP-7411-trunk-V2.patch, HADOOP-7411-trunk-alpha.patch, jmx.json
>
>
> Much of the Hadoop metrics and status info is available via JMX, especially since 0.20.100,
and 0.22+ (HDFS-1318, HADOOP-6728 etc.) For operations staff not familiar JMX setup, especially
JMX with SSL and firewall tunnelling, the usage can be daunting. Using a JMXProxyServlet (a
la Tomcat) to translate JMX attributes into JSON output would make a lot of non-Java admins
happy.
> We could probably use Tomcat's JMXProxyServlet code directly, if it's already output
some standard format (JSON or XML etc.) The code is simple enough to port over and can probably
integrate with the common HttpServer as one of the default servelet (maybe /jmx) for the pluggable
security.

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