Weird Flink UI using scheduler-mode=reactive on Flink 1.16

[André Midea Jasiskis <mi...@gmail.com>]

Hi!

When upgrading my job to Flink 1.16 from 1.15 I noticed a weird problem
with the UI, we would get duplicated Tasks one for each parallelism unit,
see screenshot.

[image: image.png]

That doesn't seem to be a problem with the UI as the rest endpoint also
returns the plan with duplicated nodes, see:

[image: image.png]

As a result of that the whole UI started being very slow to fully load.
Disabling reactive mode fixes the problem.

Has anyone faced a similar problem?

Best,
Andre Jasiskis

Re: Weird Flink UI using scheduler-mode=reactive on Flink 1.16

[Konstantin Knauf <kn...@gmail.com>]

Hi Andre,

seems you are running into https://issues.apache.org/jira/browse/FLINK-29852,
which has very recently been fixed but is still unreleased.

Cheers,

Konstantin

Am Mi., 1. März 2023 um 07:27 Uhr schrieb André Midea Jasiskis <
midea.andre@gmail.com>:

> Hi!
>
> When upgrading my job to Flink 1.16 from 1.15 I noticed a weird problem
> with the UI, we would get duplicated Tasks one for each parallelism unit,
> see screenshot.
>
> [image: image.png]
>
> That doesn't seem to be a problem with the UI as the rest endpoint also
> returns the plan with duplicated nodes, see:
>
> [image: image.png]
>
> As a result of that the whole UI started being very slow to fully load.
> Disabling reactive mode fixes the problem.
>
> Has anyone faced a similar problem?
>
> Best,
> Andre Jasiskis
>


-- 
*Konstantin Knauf*
knauf.konstantin@gmail.com