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From vino yang <yanghua1...@gmail.com>
Subject Re: Which mode to choose flink on Yarn.
Date Thu, 20 Sep 2018 06:16:58 GMT
Hi weilong,

As you said, there are advantages and disadvantages to each of the two
approaches.
However, I hope you know that the "single job" mode has a huge advantage
over the "YARN flink session" mode in that it provides job-level isolation
(whether JM or TM).
This will allow the Job to be more fine-grained, and the refactoring of
Flink's FLIP-6-based deployment model tends to be "single job" mode.
But it will start more JM (appmaster) and take up more resources.
But in the end, how to choose also requires you to evaluate and weigh.

Thanks, vino.

weilongxing <weilongxing@aicaigroup.com> 于2018年9月20日周四 上午10:27写道:

> There are two methods to deploy flink applications on yarn. The first one
> is use yarn-session and all flink applications are deployed in the session.
> The second method is each flink application deploy on yarn as a yarn
> application.
>
> My question is what's the difference between these two methods? Which one
> to choose in product environment?
>
> I can't find any material about this.
>
> I think the first method will save resources since only need one
> jobmanager(yarn application master).  While it is also the disadvantage
> since the only jobmanager can be the bottleneck while flink applications
> getting more and more.
>

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