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From Fabian Hueske <fhue...@gmail.com>
Subject Re: Flink 1.5+ performance in a Java standalone environment
Date Fri, 25 Oct 2019 15:48:29 GMT
Hi Jakub,

I had a look at the changes of Flink 1.5 [1] and didn't find anything
Something that might cause a different behavior is the new deployment and
process model (FLIP-6).

In Flink 1.5, there is a switch to disable it and use the previous
deployment mechanism.
You could try to disable the new new model [2] and see if this cause the
performance issue.

Note that the legacy mode was removed in one of the later versions.

Best, Fabian

[1] https://flink.apache.org/news/2018/05/25/release-1.5.0.html

Am Do., 24. Okt. 2019 um 19:37 Uhr schrieb Jakub Danilewicz <

> Hi,
> I have recently tried to upgrade Flink from 1.2.0 to the newest version
> and noticed that starting from the version 1.5 the performance is much
> worse when processing fixed graphs in a standalone JVM environment (Java
> 8).
> This affects all the use-cases when a Gelly graph (pre-built from a fixed
> collection of nodes/edges) gets processed by any of our custom algorithms
> (VertexCentric, ScatterGather or GSA), especially when using parallel
> processing for a local ExecutionEnvironment. The processing times
> (compared to the versions <= 1.4.2) double/triple, while CPU and memory
> consumption increase significantly.
> Are there any fine-tuning steps/tricks for the job processing engine
> behind Flink 1.5+ that would improve the performance in the scenarios
> described above?
> Best,
> Jakub

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