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https://issues.apache.org/jira/browse/YARN-8563?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16592475#comment-16592475
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Zhankun Tang edited comment on YARN-8563 at 8/25/18 5:38 AM:
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[~leftnoteasy] One question:
 *When and how will the prebuilt Docker images be built?*
Build-on-demand? Or we use an image hub that contains the various version 
combinations prebuilt in advance?

In my mind it might work like this: When user run the job, we generate the 
Dockerfile with the specified version of TF/Python installation sentence and 
build a new image based on official images. And this needs a docker hub similar 
server to distribute the image(but I guess this is not a big issue?).

This seems to be a more general and extensible way since the Dockerfile can 
also include user-specified python packages. In essence, mounting or 
downloading the python packages(.whl file) in docker and then pip install them 
seems the same way to a customized Docker build.

And it seems the "--localizations"(YARN-8714) can be also solved in 
build-on-demand? We download remote file/directories to local and declare it 
into the Dockerfile to copy to the image.


was (Author: tangzhankun):
[~leftnoteasy] One question:
 *When and how will the prebuilt Docker images be built?*
Build-on-demand? Or we use an image hub that contains the various version 
combinations prebuilt in advance?

In my mind it might work like this: When user run the job, we generate the 
Dockerfile with the specified version of TF/Python installation sentence and 
build a new image based on official images.

This seems to be a more general and extensible way since the Dockerfile can 
also include user-specified python packages. In essence, mounting or 
downloading the python packages(.whl file) in docker and then pip install them 
seems the same way to a customized Docker build.

And it seems the "--localizations" can be also solved in build-on-demand? We 
download remote file/directories to local and declare it into the Dockerfile to 
copy to the image.

> [Submarine] Support users to specify Python/TF package/version/dependencies 
> for training job.
> ---------------------------------------------------------------------------------------------
>
>                 Key: YARN-8563
>                 URL: https://issues.apache.org/jira/browse/YARN-8563
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Wangda Tan
>            Priority: Major
>
> YARN-8561 assumes all Python / Tensorflow dependencies will be packed to 
> docker image. In practice, user doesn't want to build docker image. Instead, 
> user can provide python package / dependencies (like .whl), Python and TF 
> version. And Submarine can localize specified dependencies to prebuilt base 
> Docker images.



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