I’ve requested a new repo hadoop-docker-ozone.git in gitbox.

> On Jan 22, 2019, at 4:59 AM, Elek, Marton <e...@apache.org> wrote:
> 
> 
> 
> TLDR;
> 
> I proposed to create a separated git repository for ozone docker images
> in HDDS-851 (hadoop-docker-ozone.git)
> 
> If there is no objections in the next 3 days I will ask an Apache Member
> to create the repository.
> 
> 
> 
> 
> LONG VERSION:
> 
> In HADOOP-14898 multiple docker containers and helper scripts are
> created for Hadoop.
> 
> The main goal was to:
> 
> 1.) help the development with easy-to-use docker images
> 2.) provide official hadoop images to make it easy to test new features
> 
> As of now we have:
> 
> - apache/hadoop-runner image (which contains the required dependency
> but no hadoop)
> - apache/hadoop:2 and apache/hadoop:3 images (to try out latest hadoop
> from 2/3 lines)
> 
> The base image to run hadoop (apache/hadoop-runner) is also heavily used
> for Ozone distribution/development.
> 
> The Ozone distribution contains docker-compose based cluster definitions
> to start various type of clusters and scripts to do smoketesting. (See
> HADOOP-16063 for more details).
> 
> Note: I personally believe that these definitions help a lot to start
> different type of clusters. For example it could be tricky to try out
> router based federation as it requires multiple HA clusters. But with a
> simple docker-compose definition [1] it could be started under 3
> minutes. (HADOOP-16063 is about creating these definitions for various
> hdfs/yarn use cases)
> 
> As of now we have dedicated branches in the hadoop git repository for
> the docker images (docker-hadoop-runner, docker-hadoop-2,
> docker-hadoop-3). It turns out that a separated repository would be more
> effective as the dockerhub can use only full branch names as tags.
> 
> We would like to provide ozone docker images to make the evaluation as
> easy as 'docker run -d apache/hadoop-ozone:0.3.0', therefore in HDDS-851
> we agreed to create a separated repository for the hadoop-ozone docker
> images.
> 
> If this approach works well we can also move out the existing
> docker-hadoop-2/docker-hadoop-3/docker-hadoop-runner branches from
> hadoop.git to an other separated hadoop-docker.git repository)
> 
> Please let me know if you have any comments,
> 
> Thanks,
> Marton
> 
> 1: see
> https://github.com/flokkr/runtime-compose/tree/master/hdfs/routerfeder
> as an example
> 
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