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From "real great.." <greatness.hardn...@gmail.com>
Subject Re: plugging in to hadoop
Date Wed, 01 Feb 2012 03:06:37 GMT
I think there are a couple of projects already looking into UI. did you
check them?

On Wed, Feb 1, 2012 at 7:57 AM, tejas <tejas.krishnamoorthy@oracle.com>wrote:

> Hi
>
> I am trying to develop a UI and display metrics of mapreduce and HDFS and
> also provide some kind of monitoring.
>
> 1. With version 0.20, I was able to extend the org.apache.JobTrackerPlugin
> class by configuring it in the mapred-site.properties. Is it possible to
> make a similar configuration in version 0.23? Can i plugin my class to
> fetch metrics through JobTrackerPlugin?
> I see that some of the classes in JobTracker class have been depricated?
> So would i have to plugin to the ResourceManager and the NodeManagers to
> get the metrics? Is there any api for that?
>
> 2. How does hadoop expose traps and events? If i would have to capture
> events at unfaourable states (like tracker coming down, datanode going low
> on space etc) does Hadoop send out events? How can they be trapped?
>
> Thanks
>
> Tejas
>



-- 
Regards,
R.V.

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