Hi
I have talked with the community about this for many years last time at Flink
forward 2024 in Berlin.
The use case are simple. If you receive data from IoT devices over the gsm
network. The clock on all the devices aren’t synchronised the IoT devices can
buffer data to reduce the cost for
Thanks for sharing! It is an interesting idea. The generalized watermark [1]
introduced in DataStreamV2 might be sufficient to implement it. It'll be great
if you could share more contexts on why this is useful in your pipelines.
[1]
https://cwiki.apache.org/confluence/display/FLINK/FLIP-467%3A
I found paper https://scholar.google.com/scholar?q=10.1016/j.future.2025.107796 where described Keyed Watermarks that is what I need in my pipelines. Does anyone know is it planned to implement Keyed Watermarks in Flink and when?
退订
王立壮
2720627...@qq.com
Hi Nikola
awesome, thank you, it worked,got the basic example to work, so can now try
my solutions/code.
G
On Wed, May 14, 2025 at 3:52 PM George wrote:
> Thanks.
>
> I would think this should rather be done up stream in the source image,
> for that matter I would have expected for this packag
Thanks.
I would think this should rather be done up stream in the source image, for
that matter I would have expected for this package to have been installed
already as you can't really do allot onthe flink nodes with python without
this package.
G
On Wed, May 14, 2025 at 3:33 PM Nikola Milutino
Hmm, lemme see…
Oh, yes, we also had to link Python bin:
ldconfig /usr/lib
ln -s /usr/bin/python3 /usr/bin/python
Classic trickery.
Nix,
From: George
Date: Wednesday, May 14, 2025 at 1:09 PM
To: Nikola Milutinovic , user@flink.apache.org
Subject: Re: Python based User defined function on Fl
Hi there
Got it build :)
I installed python3-pip in addition to the java - headless version, then
installed the package globally and then did the clean up.
I am however getting the below now.
it seems to be looking for python from the flink side and not python3
```
flink@jobmanager:/sql/prompus
Hi Nikola
Correct on the assumption that I'm working on ARM, MBP M1.
So ye i can add the -headless to my image build.
The pip install it's in a total different phase though, don't install the
packages ... currently as part of the base image, but might need to move it.
let me have a look. will ad
Hi George.
We saw the same problem, running Apache Flink 1.19 and 1.20 images. The cause
is that Flink image provides a JRE and you need JDK to build/install PyFlink.
And, oddly enough, I think it was only on ARM64 images. Amd64 was OK, I think.
So, Mac M1, M2, M3…
Our Docker file for building
Hi all
My Flink Jobmanager and Taskmanager is based on the community 1.19.1 on the
Java 17 image.
I've extended this by installing Python 3.11 and python3.11-venv.
created my venv environment, activated it,
when trying to pip install apache-flink. I first got an error saying
/opt/java/openjdk/in
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