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https://issues.apache.org/jira/browse/HADOOP-9160?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13725510#comment-13725510
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Philip Zeyliger commented on HADOOP-9160:
-----------------------------------------
I'm not a committer on this project, so my comments are obviously advisory
only, and if you get support, you're welcome to disregard me.
* It sounds like you're using Jolokia not so much for the JMX-ness as for its
alternative authentication model. Something about the tools you're handling
can't handle the SPNEGO(?) model for the HTTP-based (REST) APIs, and so you're
introducing a separate HTTP server (Jolokia) to handle that. Is it the
protocol that's causing interoporability issues or the authentication model?
The auth models are already pluggable. I wish we'd talk about concrete tools
that you're integrating--I'm surprised they speak Jolokia but not HTTP.
* Similarly, I'd like to understand whether, in your ideal world, you could,
say, read a file or call "hdfs upgrade" over JMX?
* We've spent considerable effort getting backwards-compatible protocols in
place for the wire protocol (via protocol buffers) and the client interfaces
(via annotations). Opening up another layer of RPC exposes us to more issues
here.
> Adopt Jolokia as the JMX HTTP/JSON bridge.
> ------------------------------------------
>
> Key: HADOOP-9160
> URL: https://issues.apache.org/jira/browse/HADOOP-9160
> Project: Hadoop Common
> Issue Type: Improvement
> Reporter: Luke Lu
> Assignee: Junping Du
> Labels: features
> Attachments: hadoop-9160-demo-branch-1.txt, HADOOP-9160.patch
>
>
> The current JMX HTTP bridge has served its purpose, while a more complete
> solution: Jolokia (formerly Jmx4Perl) has been developed/matured over the
> years.
> Jolokia provides comprehensive JMX features over HTTP/JSON including search
> and list of JMX attributes and operations metadata, which helps to support
> inter framework/platform compatibility. It has first class language bindings
> for Perl, Python, Javascript, Java.
> It's trivial (see demo patch) to incorporate Jolokia servlet into Hadoop HTTP
> servers and use the same security mechanisms.
> Adopting Jolokia will substantially improve the manageability of Hadoop and
> its ecosystem.
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