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Hadoop >> mail # user >> How to get metrics information?

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Re: How to get metrics information?
You can use the following code:
        JobClient jc = new JobClient(jobConf);
        int numReduces = jc.getClusterStatus().getMaxReduceTasks();

For 0.20.3, you can use:
    ClusterMetrics metrics = jobTracker.getClusterMetrics();

On Sat, Jan 22, 2011 at 9:57 AM, Zhenhua Guo <[EMAIL PROTECTED]> wrote:

> I want to get metrics information (e.g. number of Maps, number of
> Reduces, memory use, load) by APIs. I found two useful classes -
> ClusterStatus and ClusterMetrics. My question is how I can get
> instances of that two classes? From JobClient or JobTracker? Any
> suggested alternative way to get the information?
> Thanks
> Gerald