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From AndreaKinn <kinn6...@hotmail.it>
Subject Flink memory usage
Date Fri, 03 Nov 2017 20:15:24 GMT
Hi,
I would like to share some considerations about Flink memory consumption.
I have a cluster composed of three nodes: 1 used both as JM and TM and other
2 TM.

I ran two identical applications (in different moments) on it. The only
difference is that on the second one I doubled every operators, essentially
to check what changes in resource's usage.

Analysing the outcomes on cpu side effectively the efforts are doubled.
Doing the same with memory I had these results:

<http://apache-flink-user-mailing-list-archive.2336050.n4.nabble.com/file/t985/Screen_Shot_2017-11-03_at_21.png>


which to me seems completely counterintuitive since the results are
essentially equal.
I can imagine in the second case the memory was effectively almost full but
why Flink gets such a lot of memory even in the first case?
How it is explained this behaviour?



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