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From Steve Loughran <ste...@hortonworks.com>
Subject Re: Apache Metrics, Not Apache Humans
Date Mon, 16 Nov 2015 14:12:10 GMT

> On 16 Nov 2015, at 00:28, toki <toki.kantoor@gmail.com> wrote:
> 
>> 
>> not about philosophy as different paths lead to the same mountain top
> 
> Somebody failed Buddhist Logic 101. (Not all paths lead to the same
> mountain top, even if they appear to start at the base of the same
> mountain.)


And foundational alpine mountaineering: a route that leads to the top may be beyond your abilities
—and you may only discover that at a point where you cannot retreat.

This is why it is always good to have your own map and never follow the people in front. They
may know where they are going, but that doesn't imply its the route you should do.

w.r.t metrics, they could be used to detect problems —but systems can look healthy metric
wise, yet still be utterly broken. The standard way to test this is run a test workload through
the system and verify the results are as expected. For an ASF project, that'd probably be
submitting a patch and seeing what happened.

-Steve

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