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https://issues.apache.org/jira/browse/HADOOP-7144?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13044274#comment-13044274
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Hudson commented on HADOOP-7144:
--------------------------------
Integrated in Hadoop-Common-trunk #709 (See
[https://builds.apache.org/hudson/job/Hadoop-Common-trunk/709/])
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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