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From Alexey Kuznetsov <akuznet...@gridgain.com>
Subject Re: IGNITE-1071 IgniteCache.metrics() method returns local metrics
Date Thu, 24 Mar 2016 11:47:29 GMT
Could we have local and global MBeans?
Or local and global metrics inside same MBean?

On Thu, Mar 24, 2016 at 6:26 PM, Anton Vinogradov <avinogradov@gridgain.com>

> Hello,
> I'd like to discuss
> IGNITE-1071 IgniteCache.metrics() method returns local metrics
> <https://issues.apache.org/jira/browse/IGNITE-1071>
> I agree to make IgniteCache.metrics() global but want to keep MBeans local.
> According to specification:
> An MBean can represent a device, an application, or any resource that needs
> to be managed.
> So, I think it's a good point that MBean represents node instead of
> cluster.
> I case we will make MBeans global (representing whole cluster) we have no
> chances to see metrics of specific node which can be interesting for some
> reasons.
> For example - per node cachePuts metric can show is there any problems with
> affinity function or hashCode collisions.
> Val, Semen, could you please explain reasons of MBeans refactoring?
> We will loose api to gain per node metrics in this case.
> Thoughts?

Alexey Kuznetsov
GridGain Systems

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