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From Juha Mynttinen <juha.myntti...@king.com>
Subject Re: Performance issue associated with managed RocksDB memory
Date Fri, 26 Jun 2020 05:45:58 GMT
Andrey,

A small clarification. The tweaked WordCount I posted earlier doesn't
illustrate the issue I originally explained, i.e. the one where there's a
bigger operator and a smallest possible windows operator. Instead, the
modified WordCount illustrates the degraded performance of a very simple
Flink application when using managed memory and increasing parallelism over
a certain treshold. The performance is not degraded if not using managed
memory (and parallelism is increased).

I was hoping this kind of simple program would be easier to debug / profile.

I can also submit the more complex test with the bigger operator and and a
window operator. There's just gonna be more code to read. Can I attach a
file here or how should I submit a larger chuck of code?

Regards,
Juha



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