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Re: [pcp] mmv and qa/648 questions

To: "kenj@xxxxxxxxxxxxxxxx" <kenj@xxxxxxxxxxxxxxxx>
Subject: Re: [pcp] mmv and qa/648 questions
From: Max <makc@xxxxxxxxx>
Date: Tue, 1 Dec 2009 09:13:11 +1100
Cc: Max Matveev <makc@xxxxxxxxxxx>, Nathan Scott <nscott@xxxxxxxxxx>, "pcp@xxxxxxxxxxx" <pcp@xxxxxxxxxxx>
In-reply-to: <1259539091.12861.4.camel@localhost>
References: <1259539091.12861.4.camel@localhost>


On 30/11/2009, at 10:58, Ken McDonell <kenj@xxxxxxxxxxxxxxxx> wrote:

What is the expected behaviour when more than one mmv stats file
mentions the _same_ cluster?

If it is OK, the code is wrong as it keeps registering metrics with the
same pmids as existing metrics, but only the first registered is
fetchable.  Also forming the union of the instance domains is not
happening either.
I did not consider this scenario in the original design - which ever it does is a fluke.

I think for the Aconex-style semantics, forming the union of the mmap'd
files over a common cluster is probably correct, but I don't think was
within the scope of the original mmv implementation.

It makes sense to me.

max

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