Flink Python streaming

[Binglin3]

Hi,

I'm wondering how I can add dependencies for third party and custom libraries to be executed in Flink for python streaming? 

Thank you,

Bing

[Hequn Cheng]

Hi Bing,

I'm not familiar with python programming. I guess we can simply import libraries in the python script. A example can be found here[1].

Hope this helps.

Best, Hequn

[1] https://github.com/wdm0006/flink-python-examples/blob/master/mandelbrot/mandelbrot_set.py

On Wed, Oct 3, 2018 at 1:49 AM Bing Lin <[hidden email]> wrote:

Hi,

I'm wondering how I can add dependencies for third party and custom libraries to be executed in Flink for python streaming? 

Thank you,

Bing

[Fabian Hueske-2]

Hi,

AFAIK it's not that easy. Flink's Python support is based on Jython which translates Python code into JVM byte code. Therefore, native libs are not supported.

Chesnay (in CC) knows the details here.

Best, Fabian 

Hequn Cheng <[hidden email]> schrieb am Mi., 3. Okt. 2018, 04:30:

Hi Bing,

I'm not familiar with python programming. I guess we can simply import libraries in the python script. A example can be found here[1].

Hope this helps.

Best, Hequn

[1] https://github.com/wdm0006/flink-python-examples/blob/master/mandelbrot/mandelbrot_set.py

On Wed, Oct 3, 2018 at 1:49 AM Bing Lin <[hidden email]> wrote:

Hi,

I'm wondering how I can add dependencies for third party and custom libraries to be executed in Flink for python streaming? 

Thank you,

Bing

[Chesnay Schepler]

Hello,

to use libraries you have to supply them when submitting the job as described below. Additional directories/files will be placed in the same directory as your script on each TM.

See https://ci.apache.org/projects/flink/flink-docs-master/dev/stream/python.html#executing-plans

Note that libraries that make use of C-extensions will probably not work.

On 03.10.2018 09:14, Fabian Hueske wrote:

Hi,

AFAIK it's not that easy. Flink's Python support is based on Jython which translates Python code into JVM byte code. Therefore, native libs are not supported.

Chesnay (in CC) knows the details here.

Best, Fabian 

Hequn Cheng <[hidden email]> schrieb am Mi., 3. Okt. 2018, 04:30:

Hi Bing,

I'm not familiar with python programming. I guess we can simply import libraries in the python script. A example can be found here[1].

Hope this helps.

Best, Hequn

[1] https://github.com/wdm0006/flink-python-examples/blob/master/mandelbrot/mandelbrot_set.py

On Wed, Oct 3, 2018 at 1:49 AM Bing Lin <[hidden email]> wrote:

Hi,

I'm wondering how I can add dependencies for third party and custom libraries to be executed in Flink for python streaming? 

Thank you,

Bing