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From "Luke Lu (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-7144) Expose JMX with something like JMXProxyServlet
Date Tue, 15 Feb 2011 03:09:57 GMT
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
             Fix For: 0.23.0


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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